Hard Starting - 1990 Cherokee
10-22-2004, 05:24 PM
#11
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
How complicated was this operation? You had to drop the gas tank right?
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
10-22-2004, 05:24 PM
#12
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
How complicated was this operation? You had to drop the gas tank right?
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
10-22-2004, 05:24 PM
#13
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
How complicated was this operation? You had to drop the gas tank right?
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
>When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
>longer to start until one day when it just didn't. In my case, the
>regulator and drainback valve were fine. We replaced the pump and filter
>and everything is now tickity-boo.
>
>Regards,
>
>DAve
-Bill (remove "botizer" to reply via email)
10-22-2004, 05:56 PM
#14
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
They have a strange ignition system and seem to take forever to start
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
10-22-2004, 05:56 PM
#15
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
They have a strange ignition system and seem to take forever to start
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
10-22-2004, 05:56 PM
#16
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
They have a strange ignition system and seem to take forever to start
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
first try of the day.
Ours got better maybe when we changed the gas filter, but it seems the
CPS has to get a signal before the thing fires, so depending on where
the flywheel is is an issue. I don't think the ones after 91 had this
issue when they changed the computer system over.
I would go for the filter first.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Jeff Falkiner wrote:
>
> A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> inline 6.
> Every time he tries to start it after it's sat for awhile it takes a looong
> time to finally fire. Time is 8-10 seconds. With winter coming, he's
> concerned with keeping enough battery capacity available on cold Canadian
> winter mornings.
>
> Any quick things we should check out over a couple of Canadian beers? The
> truck has just over 50K miles and is otherwise in fantastic shape.
>
> Jeff Falkiner
> Ontario, Canada
10-22-2004, 05:57 PM
#17
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
The XJ pump is in the front of the tank so you can pull it from under.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
10-22-2004, 05:57 PM
#18
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
The XJ pump is in the front of the tank so you can pull it from under.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
10-22-2004, 05:57 PM
#19
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
The XJ pump is in the front of the tank so you can pull it from under.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Wblane wrote:
>
> How complicated was this operation? You had to drop the gas tank right?
>
> >When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> >longer to start until one day when it just didn't. In my case, the
> >regulator and drainback valve were fine. We replaced the pump and filter
> >and everything is now tickity-boo.
> >
> >Regards,
> >
> >DAve
>
> -Bill (remove "botizer" to reply via email)
10-22-2004, 11:38 PM
#20
Guest
Posts: n/a
Re: Hard Starting - 1990 Cherokee
Thanks for the help folks. We've got some work ahead of us.
Jeff
"DaveW" <spsffan@verizon.net> wrote in message
news:oi0ed.3801$EP4.1796@trnddc06...
> DougW wrote:
>
> > Jeff Falkiner did pass the time by typing:
> >
> >>A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> >>inline 6.
> >>Every time he tries to start it after it's sat for awhile it takes a
looong
> >>time to finally fire. Time is 8-10 seconds. With winter coming, he's
> >>concerned with keeping enough battery capacity available on cold
Canadian
> >>winter mornings.
> >>
> >>Any quick things we should check out over a couple of Canadian beers?
The
> >>truck has just over 50K miles and is otherwise in fantastic shape.
> >
> >
> > Fuel rail pressure. Fit a gauge to it and see if it stays about 32 psi
and
> > doesn't drop more than 4-5psi over a few hours. If it does you either
have
> > a leaking pressure regulator (front of the fuel rail), drainback valve
> > (on the fuel pump), or a leaking fuel injector. further diagnosis isn't
too
> > hard but you need a set of hoses built for the job.
> >
> > In the mean while you could try turning the key on, wait for the pump to
> > cycle, then off, then on again. That cycles the pump and gets fuel and
> > pressure back into the rail.
> >
> >
>
> When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> longer to start until one day when it just didn't. In my case, the
> regulator and drainback valve were fine. We replaced the pump and filter
> and everything is now tickity-boo.
>
> Regards,
>
> DAve
Jeff
"DaveW" <spsffan@verizon.net> wrote in message
news:oi0ed.3801$EP4.1796@trnddc06...
> DougW wrote:
>
> > Jeff Falkiner did pass the time by typing:
> >
> >>A good buddy recently bought a 1990 Cherokee Limited with the 4.0 litre
> >>inline 6.
> >>Every time he tries to start it after it's sat for awhile it takes a
looong
> >>time to finally fire. Time is 8-10 seconds. With winter coming, he's
> >>concerned with keeping enough battery capacity available on cold
Canadian
> >>winter mornings.
> >>
> >>Any quick things we should check out over a couple of Canadian beers?
The
> >>truck has just over 50K miles and is otherwise in fantastic shape.
> >
> >
> > Fuel rail pressure. Fit a gauge to it and see if it stays about 32 psi
and
> > doesn't drop more than 4-5psi over a few hours. If it does you either
have
> > a leaking pressure regulator (front of the fuel rail), drainback valve
> > (on the fuel pump), or a leaking fuel injector. further diagnosis isn't
too
> > hard but you need a set of hoses built for the job.
> >
> > In the mean while you could try turning the key on, wait for the pump to
> > cycle, then off, then on again. That cycles the pump and gets fuel and
> > pressure back into the rail.
> >
> >
>
> When my fuel pump was dying (91 XJ, 4.0) last year, it took longer and
> longer to start until one day when it just didn't. In my case, the
> regulator and drainback valve were fine. We replaced the pump and filter
> and everything is now tickity-boo.
>
> Regards,
>
> DAve