Hesco high pressure fuel regulator
09-04-2005, 05:10 PM
#21
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Say what?? If I pull the vac line off my regulator (and rememebr to
plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
engine will stumble a little then smooth out. Replace the line and
pressure drops to 30-31 PSI. It may actually stumble a bit as I
replace the line but the computer seems to figure it out either way
just fine. Pinching the return line will get me up to 90+ PSI and the
engine gets rough but I've never left the line pinched long enough to
see what finally happens - 90+ PSI in a system designed for 40 or less
strikes me as unnecessary stress on the sytem. I can't remember ever
killing the engine except for the time I intentionally held the bleed
button to test flow rate - 0 PSI or so makes for a pretty poor
injector spray pattern.
On Sun, 4 Sep 2005 19:19:46 UTC L.W.(ßill) ------ III
<----------@***.net> wrote:
> Hi Michael,
> Interesting, on a stock Jeep disconnecting the regulator's vacuum
> will kill the engine. I think you're going have to call Mopar for their
> trouble shooting tests.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Michael White wrote:
> >
> > Bill,
> >
> > Thanks. Tried that, and it put me on a path. The pressure will go up to 50
> > PSI if I pinch the line, and that's when I realized that I still had the
> > vacuum line attached to the regulator. If I pull off the vacuum line, the
> > pressure immediately jumps to 44 PSI (as advertised).
> >
> > I assume, then, that this is correct (and -please- correct me if I'm wrong).
> > As engine load (and fuel consumption) increase, the vacuum on the fuel
> > pressure regulator decreases, causing more fuel (at the same PSI) to be
> > delivered to the fuel injectors.
> >
> > Thanks.
> > --
> > Michael White
--
Will Honea
plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
engine will stumble a little then smooth out. Replace the line and
pressure drops to 30-31 PSI. It may actually stumble a bit as I
replace the line but the computer seems to figure it out either way
just fine. Pinching the return line will get me up to 90+ PSI and the
engine gets rough but I've never left the line pinched long enough to
see what finally happens - 90+ PSI in a system designed for 40 or less
strikes me as unnecessary stress on the sytem. I can't remember ever
killing the engine except for the time I intentionally held the bleed
button to test flow rate - 0 PSI or so makes for a pretty poor
injector spray pattern.
On Sun, 4 Sep 2005 19:19:46 UTC L.W.(ßill) ------ III
<----------@***.net> wrote:
> Hi Michael,
> Interesting, on a stock Jeep disconnecting the regulator's vacuum
> will kill the engine. I think you're going have to call Mopar for their
> trouble shooting tests.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Michael White wrote:
> >
> > Bill,
> >
> > Thanks. Tried that, and it put me on a path. The pressure will go up to 50
> > PSI if I pinch the line, and that's when I realized that I still had the
> > vacuum line attached to the regulator. If I pull off the vacuum line, the
> > pressure immediately jumps to 44 PSI (as advertised).
> >
> > I assume, then, that this is correct (and -please- correct me if I'm wrong).
> > As engine load (and fuel consumption) increase, the vacuum on the fuel
> > pressure regulator decreases, causing more fuel (at the same PSI) to be
> > delivered to the fuel injectors.
> >
> > Thanks.
> > --
> > Michael White
--
Will Honea
09-04-2005, 05:21 PM
#22
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Which system do you have?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
09-04-2005, 05:21 PM
#23
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Which system do you have?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
09-04-2005, 05:21 PM
#24
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Which system do you have?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
09-04-2005, 05:21 PM
#25
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Which system do you have?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> Say what?? If I pull the vac line off my regulator (and rememebr to
> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> engine will stumble a little then smooth out. Replace the line and
> pressure drops to 30-31 PSI. It may actually stumble a bit as I
> replace the line but the computer seems to figure it out either way
> just fine. Pinching the return line will get me up to 90+ PSI and the
> engine gets rough but I've never left the line pinched long enough to
> see what finally happens - 90+ PSI in a system designed for 40 or less
> strikes me as unnecessary stress on the sytem. I can't remember ever
> killing the engine except for the time I intentionally held the bleed
> button to test flow rate - 0 PSI or so makes for a pretty poor
> injector spray pattern.
09-04-2005, 07:27 PM
#26
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Doesn't matter which system it has, the small increase in pressure is well
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
09-04-2005, 07:27 PM
#27
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Doesn't matter which system it has, the small increase in pressure is well
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
09-04-2005, 07:27 PM
#28
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Doesn't matter which system it has, the small increase in pressure is well
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
09-04-2005, 07:27 PM
#29
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
Doesn't matter which system it has, the small increase in pressure is well
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
within the computer's ability to adjust for. Disconnecting the vacuum hose on
the regulator would not kill the engine, even if it was outside the computer's
range. Not enough pressure increase to affect mixture that much.
In message <431B654C.34C2F8CD@***.net>, "L.W." wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Will Honea wrote:
>>
>> Say what?? If I pull the vac line off my regulator (and rememebr to
>> plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
>> engine will stumble a little then smooth out. Replace the line and
>> pressure drops to 30-31 PSI. It may actually stumble a bit as I
>> replace the line but the computer seems to figure it out either way
>> just fine. Pinching the return line will get me up to 90+ PSI and the
>> engine gets rough but I've never left the line pinched long enough to
>> see what finally happens - 90+ PSI in a system designed for 40 or less
>> strikes me as unnecessary stress on the sytem. I can't remember ever
>> killing the engine except for the time I intentionally held the bleed
>> button to test flow rate - 0 PSI or so makes for a pretty poor
>> injector spray pattern.
09-04-2005, 11:45 PM
#30
Guest
Posts: n/a
Re: Hesco high pressure fuel regulator
I futz with both the MOPAR and the RENIX systems. FYI: the factory
MPI manual for both systems include pulling the vacuum from the
regulator with the engine running as one step in the diagnostic tree.
Pinching the return hose and letting pressure rise to 90 PSI might be
beyond the range of the 'puter, but all I ever see with change from 30
to 40 is a slight hesitation and that is only if I manage to get a
really sudden step. The stumble when removing the vacuum is more
likely the vacuum leak than the pressure, anyway.
On Sun, 4 Sep 2005 21:21:16 UTC L.W.(ßill) ------ III
<----------@***.net> wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > Say what?? If I pull the vac line off my regulator (and rememebr to
> > plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> > engine will stumble a little then smooth out. Replace the line and
> > pressure drops to 30-31 PSI. It may actually stumble a bit as I
> > replace the line but the computer seems to figure it out either way
> > just fine. Pinching the return line will get me up to 90+ PSI and the
> > engine gets rough but I've never left the line pinched long enough to
> > see what finally happens - 90+ PSI in a system designed for 40 or less
> > strikes me as unnecessary stress on the sytem. I can't remember ever
> > killing the engine except for the time I intentionally held the bleed
> > button to test flow rate - 0 PSI or so makes for a pretty poor
> > injector spray pattern.
--
Will Honea
MPI manual for both systems include pulling the vacuum from the
regulator with the engine running as one step in the diagnostic tree.
Pinching the return hose and letting pressure rise to 90 PSI might be
beyond the range of the 'puter, but all I ever see with change from 30
to 40 is a slight hesitation and that is only if I manage to get a
really sudden step. The stumble when removing the vacuum is more
likely the vacuum leak than the pressure, anyway.
On Sun, 4 Sep 2005 21:21:16 UTC L.W.(ßill) ------ III
<----------@***.net> wrote:
> Which system do you have?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > Say what?? If I pull the vac line off my regulator (and rememebr to
> > plug it so there's no vacuum leak) pressure rises to 41-43 PSI. The
> > engine will stumble a little then smooth out. Replace the line and
> > pressure drops to 30-31 PSI. It may actually stumble a bit as I
> > replace the line but the computer seems to figure it out either way
> > just fine. Pinching the return line will get me up to 90+ PSI and the
> > engine gets rough but I've never left the line pinched long enough to
> > see what finally happens - 90+ PSI in a system designed for 40 or less
> > strikes me as unnecessary stress on the sytem. I can't remember ever
> > killing the engine except for the time I intentionally held the bleed
> > button to test flow rate - 0 PSI or so makes for a pretty poor
> > injector spray pattern.
--
Will Honea