fuel pressure q, 4.0
10-07-2004, 10:41 PM
#11
Guest
Posts: n/a
Re: fuel pressure q, 4.0
L.W. ("ßill") ------ III did pass the time by typing:
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
10-07-2004, 10:41 PM
#12
Guest
Posts: n/a
Re: fuel pressure q, 4.0
L.W. ("ßill") ------ III did pass the time by typing:
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
10-07-2004, 10:41 PM
#13
Guest
Posts: n/a
Re: fuel pressure q, 4.0
L.W. ("ßill") ------ III did pass the time by typing:
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
> Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
> five pounds per square inch:
> http://www.----------.com/97TJfuelSystem.pdf
I like that last page.
14-13, installation, (3)
..."Tighten fuel rail mounting bolts and nuts to 11N.m (100 ft.lbs) torque.
Yowsa! 100 ft.lbs on a 10mm nut into the intake manifold? yea... ooookay.
Try 10 n.m == 8 ft.lbs
--
DougW
10-07-2004, 11:24 PM
#14
Guest
Posts: n/a
Re: fuel pressure q, 4.0
The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
10-07-2004, 11:24 PM
#15
Guest
Posts: n/a
Re: fuel pressure q, 4.0
The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
10-07-2004, 11:24 PM
#16
Guest
Posts: n/a
Re: fuel pressure q, 4.0
The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
the fuel rail.
If the pressure is below 44.2psi, check for kinked or blocked fuel
line. If fuel line is OK, check your fuel pump
On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
<----------@***.net> wrote:
>Hi Doug,
> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>five pounds per square inch:
>http://www.----------.com/97TJfuelSystem.pdf
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>DougW wrote:
>>
>> Stinking rough idle will not go away but I think
>> I've found the problem with the miss after heat-soak.
>> There is a TSB for putting insulation around the #3
>> fuel injector.
>>
>> Anyhoo..
>>
>> - Fuel pressure, no run, 33psi
>> - Fuel pressure, run, 33 psi
>> - Giving it the gas I notice the pressure does
>> fluctuate quite a bit but returns to steady
>> with engine rpm. Might be the pump having
>> a hard time keeping up with surges?
>> - Take the vac line off the fuel rail
>> pressure regulator, run, 40psi
>> - Engine off after run, 30psi then....
>> The fuel pressure gauge creeped up from 30psi to 36psi
>> and vaporbubbles come out the drain hose when I dumped
>> it.... Boiling fuel. :(
>>
>> Guess I could wrap the injectors with insulation
>> and insulate the fuel rail.
>>
>> Does leave me wondering if this is "normal" to have
>> some buildup after a shutdown.
>>
>> To top it off, the only place around here I could find
>> a good fuel pressure tester with release drain was Sears..
>> OW. Oh well, the tester should last a good long time
>> and it qualifies as a new toy. :)
>>
>> Haven't left the gauge on and put it under boost, the
>> hose isn't long enough to reach where it can be seen.
>>
>> My thoughts are now circling around both a week pump and
>> one or several faulty injectors, plus heat soak.
>>
>> Feeling a shotgun solution coming up. :) Any suggestions
>> on pumps or should I swallow the lump and go OEM? Otherwise
>> it would probably be NAPA.
>>
>> --
>> DougW
10-08-2004, 12:00 AM
#17
Guest
Posts: n/a
Re: fuel pressure q, 4.0
Whoops, I meant to say 49 PSI for my '97, not 39 PSI... fat fingered it!
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
10-08-2004, 12:00 AM
#18
Guest
Posts: n/a
Re: fuel pressure q, 4.0
Whoops, I meant to say 49 PSI for my '97, not 39 PSI... fat fingered it!
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
10-08-2004, 12:00 AM
#19
Guest
Posts: n/a
Re: fuel pressure q, 4.0
Whoops, I meant to say 49 PSI for my '97, not 39 PSI... fat fingered it!
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
<Matt Osborn> wrote in message
news:ut1cm0937ejht6ourgd35kro483sjmp21g@4ax.com...
> The 2000 TJ FSM calls for 49.2 plus or minus 5 psi at the test port on
> the fuel rail.
>
> If the pressure is below 44.2psi, check for kinked or blocked fuel
> line. If fuel line is OK, check your fuel pump
>
> On Thu, 07 Oct 2004 17:32:23 -0700, L.W.(ßill) ------ III
> <----------@***.net> wrote:
>
>>Hi Doug,
>> My 01 XJ, and 97 TJ Factory Service Manuals, both call for forty
>>five pounds per square inch:
>>http://www.----------.com/97TJfuelSystem.pdf
>> God Bless America, ßill O|||||||O
>>mailto:--------------------
>>
>>DougW wrote:
>>>
>>> Stinking rough idle will not go away but I think
>>> I've found the problem with the miss after heat-soak.
>>> There is a TSB for putting insulation around the #3
>>> fuel injector.
>>>
>>> Anyhoo..
>>>
>>> - Fuel pressure, no run, 33psi
>>> - Fuel pressure, run, 33 psi
>>> - Giving it the gas I notice the pressure does
>>> fluctuate quite a bit but returns to steady
>>> with engine rpm. Might be the pump having
>>> a hard time keeping up with surges?
>>> - Take the vac line off the fuel rail
>>> pressure regulator, run, 40psi
>>> - Engine off after run, 30psi then....
>>> The fuel pressure gauge creeped up from 30psi to 36psi
>>> and vaporbubbles come out the drain hose when I dumped
>>> it.... Boiling fuel. :(
>>>
>>> Guess I could wrap the injectors with insulation
>>> and insulate the fuel rail.
>>>
>>> Does leave me wondering if this is "normal" to have
>>> some buildup after a shutdown.
>>>
>>> To top it off, the only place around here I could find
>>> a good fuel pressure tester with release drain was Sears..
>>> OW. Oh well, the tester should last a good long time
>>> and it qualifies as a new toy. :)
>>>
>>> Haven't left the gauge on and put it under boost, the
>>> hose isn't long enough to reach where it can be seen.
>>>
>>> My thoughts are now circling around both a week pump and
>>> one or several faulty injectors, plus heat soak.
>>>
>>> Feeling a shotgun solution coming up. :) Any suggestions
>>> on pumps or should I swallow the lump and go OEM? Otherwise
>>> it would probably be NAPA.
>>>
>>> --
>>> DougW
>
10-08-2004, 12:15 AM
#20
Guest
Posts: n/a
Re: fuel pressure q, 4.0
So did I.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Jerry Bransford wrote:
>
> Whoops, I meant to say 49 PSI for my '97, not 39 PSI... fat fingered it!
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Jerry Bransford wrote:
>
> Whoops, I meant to say 49 PSI for my '97, not 39 PSI... fat fingered it!
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/