Re: 99 xj slow starting
08-26-2003, 03:34 PM
#1
Guest
Posts: n/a
Re: 99 xj slow starting
Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
does the same thing, takes a little longer to crank when cold, but it's not too
bad, I'll live with it until I have to replace the fuel pump.
In article <3F4AE1D0.A55A2F11@***.net>, L.W.(=?iso-8859-1?Q?=DFill?=) ------
III <----------@***.net> writes:
>Hi Kevin,
> They stick it in the tank:
>http://www.----------.com/97TJfuelreg.pdf I think I would put a gauge on
>the fuel rail to make sure it bleed off, before I went to all that work.
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>kevin krajewski wrote:
>>
>> My 99xj sport 4.0 liter has difficulty starting when sitting a few
>> hours. It turns over for about 5 seconds before it starts. I've
>> tried "priming" it by turning the key to the run position for a few
>> seconds until the pump shuts off then repeat and this seems to help a
>> lot. It starts quickly if I follow this procedure. Searching past
>> posts this points to a fuel pressure problem. I can't seem to find
>> the pressure regulator. I see a line going in the front of the fuel
>> rail but not a return line. Can anyone help me out?
>>
>> thanks. kevin.
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
does the same thing, takes a little longer to crank when cold, but it's not too
bad, I'll live with it until I have to replace the fuel pump.
In article <3F4AE1D0.A55A2F11@***.net>, L.W.(=?iso-8859-1?Q?=DFill?=) ------
III <----------@***.net> writes:
>Hi Kevin,
> They stick it in the tank:
>http://www.----------.com/97TJfuelreg.pdf I think I would put a gauge on
>the fuel rail to make sure it bleed off, before I went to all that work.
> God Bless America, ßill O|||||||O
>mailto:--------------------
>
>kevin krajewski wrote:
>>
>> My 99xj sport 4.0 liter has difficulty starting when sitting a few
>> hours. It turns over for about 5 seconds before it starts. I've
>> tried "priming" it by turning the key to the run position for a few
>> seconds until the pump shuts off then repeat and this seems to help a
>> lot. It starts quickly if I follow this procedure. Searching past
>> posts this points to a fuel pressure problem. I can't seem to find
>> the pressure regulator. I see a line going in the front of the fuel
>> rail but not a return line. Can anyone help me out?
>>
>> thanks. kevin.
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 03:54 PM
#2
Guest
Posts: n/a
Re: 99 xj slow starting
Hi Matt,
For your year and every other American manufacturer it will look
like this:
http://members.***.net/wilsond/Fixes...-regulator.jpg
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
> does the same thing, takes a little longer to crank when cold, but it's not too
> bad, I'll live with it until I have to replace the fuel pump.
>
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
For your year and every other American manufacturer it will look
like this:
http://members.***.net/wilsond/Fixes...-regulator.jpg
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
> does the same thing, takes a little longer to crank when cold, but it's not too
> bad, I'll live with it until I have to replace the fuel pump.
>
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 03:54 PM
#3
Guest
Posts: n/a
Re: 99 xj slow starting
Hi Matt,
For your year and every other American manufacturer it will look
like this:
http://members.***.net/wilsond/Fixes...-regulator.jpg
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
> does the same thing, takes a little longer to crank when cold, but it's not too
> bad, I'll live with it until I have to replace the fuel pump.
>
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
For your year and every other American manufacturer it will look
like this:
http://members.***.net/wilsond/Fixes...-regulator.jpg
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
> does the same thing, takes a little longer to crank when cold, but it's not too
> bad, I'll live with it until I have to replace the fuel pump.
>
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 04:49 PM
#4
Guest
Posts: n/a
Re: 99 xj slow starting
In article <3F4BBA7A.AF88AC77@***.net>, L.W.(=?iso-8859-1?Q?=DFill?=) ------
III <----------@***.net> writes:
>Hi Matt,
> For your year and every other American manufacturer it will look
>like this:
>http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
So is this what maintains the correct fuel pressure while the engine's running
or when it's shut down? I think I'm thinking of an anti-drainback type valve...
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
III <----------@***.net> writes:
>Hi Matt,
> For your year and every other American manufacturer it will look
>like this:
>http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
So is this what maintains the correct fuel pressure while the engine's running
or when it's shut down? I think I'm thinking of an anti-drainback type valve...
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 04:49 PM
#5
Guest
Posts: n/a
Re: 99 xj slow starting
In article <3F4BBA7A.AF88AC77@***.net>, L.W.(=?iso-8859-1?Q?=DFill?=) ------
III <----------@***.net> writes:
>Hi Matt,
> For your year and every other American manufacturer it will look
>like this:
>http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
So is this what maintains the correct fuel pressure while the engine's running
or when it's shut down? I think I'm thinking of an anti-drainback type valve...
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
III <----------@***.net> writes:
>Hi Matt,
> For your year and every other American manufacturer it will look
>like this:
>http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
So is this what maintains the correct fuel pressure while the engine's running
or when it's shut down? I think I'm thinking of an anti-drainback type valve...
* * *
Matt Macchiarolo
www.townpeddler.com
www.wolverine4wd.org
http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 04:56 PM
#6
Guest
Posts: n/a
Re: 99 xj slow starting
I'd check the fuel rail pressure and bleed down mainly for your
safety. The pressure regulator is on the fuel rail on some
models and in the tank on others.... but if that is all it is
and the PITA factor is unimportant, no biggie. You'd want
to make sure the pressure is actually high enough for operation
and not too high so it may pop hoses. Two other things cause
bleed down, leaking injectors and leaking hoses. Would suspect
an injector leaking into the engine would show as black puffa
smoke on restart, but some also leak around their seal. And
a leaking hose between the tank and fuel rail can get interesting
in a hurry. Could swear there is also a check valve at the pump
even with the on-rail pressure regulator, but have no manual
that shows either.
Approximately 8/26/03 12:54, L.W.(ßill) ------ III uttered for posterity:
> Hi Matt,
> For your year and every other American manufacturer it will look
> like this:
> http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Matt Macchiarolo wrote:
>>
>> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
>> does the same thing, takes a little longer to crank when cold, but it's not too
>> bad, I'll live with it until I have to replace the fuel pump.
>>
safety. The pressure regulator is on the fuel rail on some
models and in the tank on others.... but if that is all it is
and the PITA factor is unimportant, no biggie. You'd want
to make sure the pressure is actually high enough for operation
and not too high so it may pop hoses. Two other things cause
bleed down, leaking injectors and leaking hoses. Would suspect
an injector leaking into the engine would show as black puffa
smoke on restart, but some also leak around their seal. And
a leaking hose between the tank and fuel rail can get interesting
in a hurry. Could swear there is also a check valve at the pump
even with the on-rail pressure regulator, but have no manual
that shows either.
Approximately 8/26/03 12:54, L.W.(ßill) ------ III uttered for posterity:
> Hi Matt,
> For your year and every other American manufacturer it will look
> like this:
> http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Matt Macchiarolo wrote:
>>
>> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
>> does the same thing, takes a little longer to crank when cold, but it's not too
>> bad, I'll live with it until I have to replace the fuel pump.
>>
08-26-2003, 04:56 PM
#7
Guest
Posts: n/a
Re: 99 xj slow starting
I'd check the fuel rail pressure and bleed down mainly for your
safety. The pressure regulator is on the fuel rail on some
models and in the tank on others.... but if that is all it is
and the PITA factor is unimportant, no biggie. You'd want
to make sure the pressure is actually high enough for operation
and not too high so it may pop hoses. Two other things cause
bleed down, leaking injectors and leaking hoses. Would suspect
an injector leaking into the engine would show as black puffa
smoke on restart, but some also leak around their seal. And
a leaking hose between the tank and fuel rail can get interesting
in a hurry. Could swear there is also a check valve at the pump
even with the on-rail pressure regulator, but have no manual
that shows either.
Approximately 8/26/03 12:54, L.W.(ßill) ------ III uttered for posterity:
> Hi Matt,
> For your year and every other American manufacturer it will look
> like this:
> http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Matt Macchiarolo wrote:
>>
>> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
>> does the same thing, takes a little longer to crank when cold, but it's not too
>> bad, I'll live with it until I have to replace the fuel pump.
>>
safety. The pressure regulator is on the fuel rail on some
models and in the tank on others.... but if that is all it is
and the PITA factor is unimportant, no biggie. You'd want
to make sure the pressure is actually high enough for operation
and not too high so it may pop hoses. Two other things cause
bleed down, leaking injectors and leaking hoses. Would suspect
an injector leaking into the engine would show as black puffa
smoke on restart, but some also leak around their seal. And
a leaking hose between the tank and fuel rail can get interesting
in a hurry. Could swear there is also a check valve at the pump
even with the on-rail pressure regulator, but have no manual
that shows either.
Approximately 8/26/03 12:54, L.W.(ßill) ------ III uttered for posterity:
> Hi Matt,
> For your year and every other American manufacturer it will look
> like this:
> http://members.***.net/wilsond/Fixes...-regulator.jpg
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Matt Macchiarolo wrote:
>>
>> Isn't there a fuel-return check valve kind of thing to maintain pressure? My XJ
>> does the same thing, takes a little longer to crank when cold, but it's not too
>> bad, I'll live with it until I have to replace the fuel pump.
>>
08-26-2003, 04:59 PM
#8
Guest
Posts: n/a
Re: 99 xj slow starting
It's a regulator and should maintain 38? pounds running or not.
They don't mention anything about a pressure release. So if it bleeds
off, it's leaking.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> So is this what maintains the correct fuel pressure while the engine's running
> or when it's shut down? I think I'm thinking of an anti-drainback type valve...
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
They don't mention anything about a pressure release. So if it bleeds
off, it's leaking.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> So is this what maintains the correct fuel pressure while the engine's running
> or when it's shut down? I think I'm thinking of an anti-drainback type valve...
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
08-26-2003, 04:59 PM
#9
Guest
Posts: n/a
Re: 99 xj slow starting
It's a regulator and should maintain 38? pounds running or not.
They don't mention anything about a pressure release. So if it bleeds
off, it's leaking.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> So is this what maintains the correct fuel pressure while the engine's running
> or when it's shut down? I think I'm thinking of an anti-drainback type valve...
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
They don't mention anything about a pressure release. So if it bleeds
off, it's leaking.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Matt Macchiarolo wrote:
>
> So is this what maintains the correct fuel pressure while the engine's running
> or when it's shut down? I think I'm thinking of an anti-drainback type valve...
> * * *
> Matt Macchiarolo
> www.townpeddler.com
> www.wolverine4wd.org
> http://wolverine4wd.org/rigs/macchiarolo_ml.html
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