4.0 Fuel injector
 

BTW, I passed on the 266k YJ.

Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without issue.
Started it up about 530pm today to go pick up a date and smelled fuel...
bad. I've noticed my gas mileage has been a little down lately, but I was
getting about 10mpg today. Power is down, the idle is rough.

Stopped at a gas station, and while fueling up I checked under the hood. I
can see fuel leaking from the top of the injector where the green plug
attaches to the injector.

Do I need a whole new injector or just an O-ring? Do I need to replace all 6
injectors? At 70 bux a pop, I'd like to replace one at a time if possible.

Advice on changing an injector? Brands to stay away from?

Thanks,

Carl

Re: 4.0 Fuel injector
 

Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
me. Did you happen to notice hwere that fuel runs as it leaks out?
Yep, right down on the exhaust. If you have fuel around the
electrical connector, they are toast - replace them. Of course, you
should also replace ALL the o-rings (12) when you replace the injector
- and don't forget the ones for the feed line and the pressure
regulator. You have to pull the fuel rail anyway, so it's cheap
insurance.

I bought the aftermarket injectors from Advanced Auto - not cheap but
a whole lot cheaper than the dealer. The ones I got use a different
plunger in the nozzle and I actually like it better than the OEM -
lower mass and forced closure. They have been in for nearly 50k miles
now and no problem with them at all.

On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
<carlsaiyed@REMOVEhotmail.com> wrote:

> BTW, I passed on the 266k YJ.
>
> Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without issue.
> Started it up about 530pm today to go pick up a date and smelled fuel...
> bad. I've noticed my gas mileage has been a little down lately, but I was
> getting about 10mpg today. Power is down, the idle is rough.
>
> Stopped at a gas station, and while fueling up I checked under the hood. I
> can see fuel leaking from the top of the injector where the green plug
> attaches to the injector.
>
> Do I need a whole new injector or just an O-ring? Do I need to replace all 6
> injectors? At 70 bux a pop, I'd like to replace one at a time if possible.
>
> Advice on changing an injector? Brands to stay away from?
>
> Thanks,
>
> Carl
>
>


--
Will Honea

Re: 4.0 Fuel injector
 

Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
me. Did you happen to notice hwere that fuel runs as it leaks out?
Yep, right down on the exhaust. If you have fuel around the
electrical connector, they are toast - replace them. Of course, you
should also replace ALL the o-rings (12) when you replace the injector
- and don't forget the ones for the feed line and the pressure
regulator. You have to pull the fuel rail anyway, so it's cheap
insurance.

I bought the aftermarket injectors from Advanced Auto - not cheap but
a whole lot cheaper than the dealer. The ones I got use a different
plunger in the nozzle and I actually like it better than the OEM -
lower mass and forced closure. They have been in for nearly 50k miles
now and no problem with them at all.

On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
<carlsaiyed@REMOVEhotmail.com> wrote:

> BTW, I passed on the 266k YJ.
>
> Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without issue.
> Started it up about 530pm today to go pick up a date and smelled fuel...
> bad. I've noticed my gas mileage has been a little down lately, but I was
> getting about 10mpg today. Power is down, the idle is rough.
>
> Stopped at a gas station, and while fueling up I checked under the hood. I
> can see fuel leaking from the top of the injector where the green plug
> attaches to the injector.
>
> Do I need a whole new injector or just an O-ring? Do I need to replace all 6
> injectors? At 70 bux a pop, I'd like to replace one at a time if possible.
>
> Advice on changing an injector? Brands to stay away from?
>
> Thanks,
>
> Carl
>
>


--
Will Honea

Re: 4.0 Fuel injector
 

Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
me. Did you happen to notice hwere that fuel runs as it leaks out?
Yep, right down on the exhaust. If you have fuel around the
electrical connector, they are toast - replace them. Of course, you
should also replace ALL the o-rings (12) when you replace the injector
- and don't forget the ones for the feed line and the pressure
regulator. You have to pull the fuel rail anyway, so it's cheap
insurance.

I bought the aftermarket injectors from Advanced Auto - not cheap but
a whole lot cheaper than the dealer. The ones I got use a different
plunger in the nozzle and I actually like it better than the OEM -
lower mass and forced closure. They have been in for nearly 50k miles
now and no problem with them at all.

On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
<carlsaiyed@REMOVEhotmail.com> wrote:

> BTW, I passed on the 266k YJ.
>
> Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without issue.
> Started it up about 530pm today to go pick up a date and smelled fuel...
> bad. I've noticed my gas mileage has been a little down lately, but I was
> getting about 10mpg today. Power is down, the idle is rough.
>
> Stopped at a gas station, and while fueling up I checked under the hood. I
> can see fuel leaking from the top of the injector where the green plug
> attaches to the injector.
>
> Do I need a whole new injector or just an O-ring? Do I need to replace all 6
> injectors? At 70 bux a pop, I'd like to replace one at a time if possible.
>
> Advice on changing an injector? Brands to stay away from?
>
> Thanks,
>
> Carl
>
>


--
Will Honea

Re: 4.0 Fuel injector
 

Tx for the advice. How do I pull the fuel rail?

Carl


"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-HdfgwbbDszlW@anon.none.net...
> Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
> me. Did you happen to notice hwere that fuel runs as it leaks out?
> Yep, right down on the exhaust. If you have fuel around the
> electrical connector, they are toast - replace them. Of course, you
> should also replace ALL the o-rings (12) when you replace the injector
> - and don't forget the ones for the feed line and the pressure
> regulator. You have to pull the fuel rail anyway, so it's cheap
> insurance.
>
> I bought the aftermarket injectors from Advanced Auto - not cheap but
> a whole lot cheaper than the dealer. The ones I got use a different
> plunger in the nozzle and I actually like it better than the OEM -
> lower mass and forced closure. They have been in for nearly 50k miles
> now and no problem with them at all.
>
> On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
> <carlsaiyed@REMOVEhotmail.com> wrote:
>
> > BTW, I passed on the 266k YJ.
> >
> > Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without
issue.
> > Started it up about 530pm today to go pick up a date and smelled fuel...
> > bad. I've noticed my gas mileage has been a little down lately, but I
was
> > getting about 10mpg today. Power is down, the idle is rough.
> >
> > Stopped at a gas station, and while fueling up I checked under the hood.
I
> > can see fuel leaking from the top of the injector where the green plug
> > attaches to the injector.
> >
> > Do I need a whole new injector or just an O-ring? Do I need to replace
all 6
> > injectors? At 70 bux a pop, I'd like to replace one at a time if
possible.
> >
> > Advice on changing an injector? Brands to stay away from?
> >
> > Thanks,
> >
> > Carl
> >
> >
>
>
> --
> Will Honea

Re: 4.0 Fuel injector
 

Tx for the advice. How do I pull the fuel rail?

Carl


"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-HdfgwbbDszlW@anon.none.net...
> Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
> me. Did you happen to notice hwere that fuel runs as it leaks out?
> Yep, right down on the exhaust. If you have fuel around the
> electrical connector, they are toast - replace them. Of course, you
> should also replace ALL the o-rings (12) when you replace the injector
> - and don't forget the ones for the feed line and the pressure
> regulator. You have to pull the fuel rail anyway, so it's cheap
> insurance.
>
> I bought the aftermarket injectors from Advanced Auto - not cheap but
> a whole lot cheaper than the dealer. The ones I got use a different
> plunger in the nozzle and I actually like it better than the OEM -
> lower mass and forced closure. They have been in for nearly 50k miles
> now and no problem with them at all.
>
> On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
> <carlsaiyed@REMOVEhotmail.com> wrote:
>
> > BTW, I passed on the 266k YJ.
> >
> > Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without
issue.
> > Started it up about 530pm today to go pick up a date and smelled fuel...
> > bad. I've noticed my gas mileage has been a little down lately, but I
was
> > getting about 10mpg today. Power is down, the idle is rough.
> >
> > Stopped at a gas station, and while fueling up I checked under the hood.
I
> > can see fuel leaking from the top of the injector where the green plug
> > attaches to the injector.
> >
> > Do I need a whole new injector or just an O-ring? Do I need to replace
all 6
> > injectors? At 70 bux a pop, I'd like to replace one at a time if
possible.
> >
> > Advice on changing an injector? Brands to stay away from?
> >
> > Thanks,
> >
> > Carl
> >
> >
>
>
> --
> Will Honea

Re: 4.0 Fuel injector
 

Tx for the advice. How do I pull the fuel rail?

Carl


"Will Honea" <whonea@yahoo.com> wrote in message
news:JxX2tWiP5BNp-pn2-HdfgwbbDszlW@anon.none.net...
> Within a week of getting my 88 MJ ihad 2 of those suckers pull that on
> me. Did you happen to notice hwere that fuel runs as it leaks out?
> Yep, right down on the exhaust. If you have fuel around the
> electrical connector, they are toast - replace them. Of course, you
> should also replace ALL the o-rings (12) when you replace the injector
> - and don't forget the ones for the feed line and the pressure
> regulator. You have to pull the fuel rail anyway, so it's cheap
> insurance.
>
> I bought the aftermarket injectors from Advanced Auto - not cheap but
> a whole lot cheaper than the dealer. The ones I got use a different
> plunger in the nozzle and I actually like it better than the OEM -
> lower mass and forced closure. They have been in for nearly 50k miles
> now and no problem with them at all.
>
> On Mon, 21 Mar 2005 06:36:58 UTC "Carl Saiyed"
> <carlsaiyed@REMOVEhotmail.com> wrote:
>
> > BTW, I passed on the 266k YJ.
> >
> > Drove the Jeep (89 Cherokee 4.0) all day yesterday and today without
issue.
> > Started it up about 530pm today to go pick up a date and smelled fuel...
> > bad. I've noticed my gas mileage has been a little down lately, but I
was
> > getting about 10mpg today. Power is down, the idle is rough.
> >
> > Stopped at a gas station, and while fueling up I checked under the hood.
I
> > can see fuel leaking from the top of the injector where the green plug
> > attaches to the injector.
> >
> > Do I need a whole new injector or just an O-ring? Do I need to replace
all 6
> > injectors? At 70 bux a pop, I'd like to replace one at a time if
possible.
> >
> > Advice on changing an injector? Brands to stay away from?
> >
> > Thanks,
> >
> > Carl
> >
> >
>
>
> --
> Will Honea

Re: 4.0 Fuel injector
 

There are bolts that hold it down and clips on the injectors. Also there are
o rings on the fuel rail that can get lost. Be careful with those as well.
You need a manual it sounds like. there is also fuel pressure to bleed off
before you yank it apart.
KH

Re: 4.0 Fuel injector
 

There are bolts that hold it down and clips on the injectors. Also there are
o rings on the fuel rail that can get lost. Be careful with those as well.
You need a manual it sounds like. there is also fuel pressure to bleed off
before you yank it apart.
KH

Re: 4.0 Fuel injector
 

There are bolts that hold it down and clips on the injectors. Also there are
o rings on the fuel rail that can get lost. Be careful with those as well.
You need a manual it sounds like. there is also fuel pressure to bleed off
before you yank it apart.
KH