97 JGC hard starts
04-15-2005, 12:54 PM
#11
Guest
Posts: n/a
Re: 97 JGC hard starts
There is also a regulator on the fuel rail usually with a check valve
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
04-15-2005, 12:54 PM
#12
Guest
Posts: n/a
Re: 97 JGC hard starts
There is also a regulator on the fuel rail usually with a check valve
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
04-15-2005, 12:54 PM
#13
Guest
Posts: n/a
Re: 97 JGC hard starts
There is also a regulator on the fuel rail usually with a check valve
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
for the return line so you would need to first check the pressure bleed
off, then isolate which way it is going down if it is indeed the
trouble. Bill's test will tell you for sure if that is the problem. It
made no difference in our 4.0.
Our Cherokee got noticeably faster starting in the mornings when I
replaced the ratty ground strap between the engine and the firewall. A
quick test for that is to run a booster cable from the battery negative
to the body and see if it starts right up after that.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
99trooper wrote:
>
> Thanks for the info...the checkvalve is part of the fuel pump right? Would
> I have to drop the tank to get the pump out?
>
> Thanks
04-17-2005, 04:57 PM
#14
Guest
Posts: n/a
Re: 97 JGC hard starts
I have a Jeep TJ 97, and I got the same problem. I did the test as you
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
04-17-2005, 04:57 PM
#15
Guest
Posts: n/a
Re: 97 JGC hard starts
I have a Jeep TJ 97, and I got the same problem. I did the test as you
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
04-17-2005, 04:57 PM
#16
Guest
Posts: n/a
Re: 97 JGC hard starts
I have a Jeep TJ 97, and I got the same problem. I did the test as you
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
04-17-2005, 04:57 PM
#17
Guest
Posts: n/a
Re: 97 JGC hard starts
I have a Jeep TJ 97, and I got the same problem. I did the test as you
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
described below and the engine started fast, just as it did some time ago.
So, the question I have, were is this valve and is it easy to replace?
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:425EC1D3.41DD4CD8@***.net...
> You may have a bad check valve, allowing your fuel pressure to
> bleed off overnight. Next time you attempt to start it, instead of
> cranking the engine just turn on the ignition switch, and wait two
> seconds for the fuel pump to automatically turn off, switch the ignition
> off, and back on again, doing this for at least five more times and you
> should have gasoline back at the injectors.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> 99trooper wrote:
>>
>> Hello,
>>
>> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
>> Grand
>> Cherokee because it was starting hard. It still starts hard after
>> replacing those things. Usually I have to crank it over for a long time
>> for it to start. Once it is running it runs and drives great. If the
>> engine is already warm, it starts up fine, I only have trouble when it
>> sits over night or for a while during the day...
>>
>> Any ideas of what else I could check?
04-17-2005, 05:22 PM
#18
Guest
Posts: n/a
Re: 97 JGC hard starts
Hi Denis,
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?
04-17-2005, 05:22 PM
#19
Guest
Posts: n/a
Re: 97 JGC hard starts
Hi Denis,
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?
04-17-2005, 05:22 PM
#20
Guest
Posts: n/a
Re: 97 JGC hard starts
Hi Denis,
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?
It's a part in the fuel pump:
http://www.----------.com/97TJfuelSystem.pdf
God Bless America, ßill O|||||||O
mailto:--------------------
Denis Roy wrote:
>
> I have a Jeep TJ 97, and I got the same problem. I did the test as you
> described below and the engine started fast, just as it did some time ago.
> So, the question I have, were is this valve and is it easy to replace?
>
> "L.W. ("ßill") ------ III" <----------@***.net> wrote in message
> news:425EC1D3.41DD4CD8@***.net...
> > You may have a bad check valve, allowing your fuel pressure to
> > bleed off overnight. Next time you attempt to start it, instead of
> > cranking the engine just turn on the ignition switch, and wait two
> > seconds for the fuel pump to automatically turn off, switch the ignition
> > off, and back on again, doing this for at least five more times and you
> > should have gasoline back at the injectors.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > 99trooper wrote:
> >>
> >> Hello,
> >>
> >> I just replaced the plugs and distributer cap and rotor on a 97 Jeep
> >> Grand
> >> Cherokee because it was starting hard. It still starts hard after
> >> replacing those things. Usually I have to crank it over for a long time
> >> for it to start. Once it is running it runs and drives great. If the
> >> engine is already warm, it starts up fine, I only have trouble when it
> >> sits over night or for a while during the day...
> >>
> >> Any ideas of what else I could check?