Adding a fuel-pressure check port
06-03-2007, 08:34 PM
#41
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
Matt Macchiarolo wrote:
> Are you certain there is no test port? Maybe they did away with them,
> but there is one on my '00 Wrangler with the same engine. It's on the
> fuel rail.
Yea.. they ditched the check port sometime in 05 I think.
--
DougW
> Are you certain there is no test port? Maybe they did away with them,
> but there is one on my '00 Wrangler with the same engine. It's on the
> fuel rail.
Yea.. they ditched the check port sometime in 05 I think.
--
DougW
06-03-2007, 08:44 PM
#42
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
On Jun 3, 8:13 pm, "DougW" <post.repl...@invalid.address> wrote:
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
06-03-2007, 08:44 PM
#43
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
On Jun 3, 8:13 pm, "DougW" <post.repl...@invalid.address> wrote:
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
06-03-2007, 08:44 PM
#44
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
On Jun 3, 8:13 pm, "DougW" <post.repl...@invalid.address> wrote:
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
06-03-2007, 08:44 PM
#45
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
On Jun 3, 8:13 pm, "DougW" <post.repl...@invalid.address> wrote:
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
> stilllearning wrote:
> > I do not have any problems; I was thinking of putting in a fuel port
> > as a pro-active measure. I would like to study the pressure patterns
> > at idle, during winter, while accelerating and such, so that when a
> > problem occurs, I am somewhat prepared. The problem could be fuel
> > pump, fuel regulator, leaks and such. Moreover, when the car stalls,
> > the problem could or could not be fuel pressure related.
>
> Ok.. this is what your going to see.
>
> ign on -- idealy a few psi from the last shutdown
> followed by a run up to operating psi
> start/idle -- basic static pressure
> running -- basic static pressure
> wide open -- a couple more psi (depends on the year)
> shutdown -- a slow but steady build as fuel in the
> rail expands due to heat. Followed by
> a return to normal and a very slow decrease
>
> Nothing apart from a very sensitive electronic sensor
> and scope could detect injector firing.
>
> About the only things of interest are
> 1) lower fuel pressure on acceleration
> - clogged fuel filter
> - bad pressure regulator (which for your model is in the pump)
> - worn pump
> 2) slow decrease in pressure with engine off
> - leaking fuel system or injector
>
> Your probably better off buying a good scantool and learning how
> to use it. Most of the stuff is monitored by the compooter these
> days.
>
> --
> -- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
Have a Scantool OBD-II scanner (http://www.scantool.net/products/
product_info.php?cPath=8_6&products_id=32) and written some software
programs to get all my Jeep parameters logged realtime to my laptop
while I am driving - a wealth of information, but incomplete. One of
this days, I will post this information here. However, the scanner
provides no fuel pressure information. Love the scanner, though.
06-03-2007, 11:19 PM
#46
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
Yeah but the OP said he has an 04.
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
06-03-2007, 11:19 PM
#47
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
Yeah but the OP said he has an 04.
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
06-03-2007, 11:19 PM
#48
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
Yeah but the OP said he has an 04.
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
06-03-2007, 11:19 PM
#49
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
Yeah but the OP said he has an 04.
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
"DougW" <post.replies@invalid.address> wrote in message
news:E6J8i.165126$mJ1.140553@newsfe22.lga...
> Matt Macchiarolo wrote:
>> Are you certain there is no test port? Maybe they did away with them,
>> but there is one on my '00 Wrangler with the same engine. It's on the
>> fuel rail.
>
> Yea.. they ditched the check port sometime in 05 I think.
>
> --
> DougW
>
06-04-2007, 11:52 AM
#50
Guest
Posts: n/a
Re: Adding a fuel-pressure check port
On Jun 3, 8:19 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
> Yeah but the OP said he has an 04.
>
> "DougW" <post.repl...@invalid.address> wrote in message
>
> news:E6J8i.165126$mJ1.140553@newsfe22.lga...
>
>
>
> > Matt Macchiarolo wrote:
> >> Are you certain there is no test port? Maybe they did away with them,
> >> but there is one on my '00 Wrangler with the same engine. It's on the
> >> fuel rail.
>
> > Yea.. they ditched the check port sometime in 05 I think.
>
> > --
> > DougW- Hide quoted text -
>
> - Show quoted text -
FYI: for a hassle-free installation, you're better off using a
crimped connection if you're splicing into a nylon fuel line -- the
connectors I've used were specifically tailored to that purpose -- as
regular barbs won't cut it. Crimpers vary from the high-dollar,
dedicated purpose devices to the [aforementioned] CV-boot variety,
depending on the products selected. Try googling "nylon fuel line
repair" or something to that effect.
Overkill on pieces, CV-style clamping:
http://www.etoolcart.com/index.asp?P...OD&ProdID=8126
It might be easier to have a local well-equipped garage crimp it up
for you. While working on fitting a supercharger, I found an absolute
dearth of information and materials for this exact scenario....even
the manufacturers show a cobbled-up pile of fittings in their
literature.....the performance aftermarket supplies an an-to-male
quick-connect fitting for "Mustang" applications, but their female
portion is on the rail or something, so it only gets you halfway
there....
> Yeah but the OP said he has an 04.
>
> "DougW" <post.repl...@invalid.address> wrote in message
>
> news:E6J8i.165126$mJ1.140553@newsfe22.lga...
>
>
>
> > Matt Macchiarolo wrote:
> >> Are you certain there is no test port? Maybe they did away with them,
> >> but there is one on my '00 Wrangler with the same engine. It's on the
> >> fuel rail.
>
> > Yea.. they ditched the check port sometime in 05 I think.
>
> > --
> > DougW- Hide quoted text -
>
> - Show quoted text -
FYI: for a hassle-free installation, you're better off using a
crimped connection if you're splicing into a nylon fuel line -- the
connectors I've used were specifically tailored to that purpose -- as
regular barbs won't cut it. Crimpers vary from the high-dollar,
dedicated purpose devices to the [aforementioned] CV-boot variety,
depending on the products selected. Try googling "nylon fuel line
repair" or something to that effect.
Overkill on pieces, CV-style clamping:
http://www.etoolcart.com/index.asp?P...OD&ProdID=8126
It might be easier to have a local well-equipped garage crimp it up
for you. While working on fitting a supercharger, I found an absolute
dearth of information and materials for this exact scenario....even
the manufacturers show a cobbled-up pile of fittings in their
literature.....the performance aftermarket supplies an an-to-male
quick-connect fitting for "Mustang" applications, but their female
portion is on the rail or something, so it only gets you halfway
there....