Possible no combustion in cylinder 1
CF Veteran
Joined: Nov 2017
Posts: 3,700
Likes: 238
From: Groton, MA
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
Bwah.
Yeah ok buddy.
Your not gonna start sending me mean personal messages now are you?
U told him to use a cup, amongst other things.
Logically pictures of op's plugs would be a good idea.
No concern of yours however, it's funny.
His cel isn't even on and your telling the poor guy to pour water down the intake.
It's classic!, enough said.
Bwah.
Yeah ok buddy.
Your not gonna start sending me mean personal messages now are you?
U told him to use a cup, amongst other things.
Logically pictures of op's plugs would be a good idea.
No concern of yours however, it's funny.
His cel isn't even on and your telling the poor guy to pour water down the intake.
It's classic!, enough said.
Bwah.
If you're not familiar with what he's talking about, that's fine - but cruiser's credentials are impeccable and experience is extensive.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Here's something else to look into. Just posted up.
This guy did a great job.
https://www.cherokeeforum.com/f2/200...-p0306-242067/
This guy did a great job.
https://www.cherokeeforum.com/f2/200...-p0306-242067/
Thread Starter
Newbie
Joined: Feb 2018
Posts: 12
Likes: 0
Year: 1998
Model: Cherokee(SJ)
Engine: 4.0L
Short update. I tried the water in the throttle body, and it seems to have made a small difference. I get glimpses of a smooth idle in between roughness. I was using distilled water, but i'm assuming tap water would be fine. Is it possible to use too much water?
CF ADMIN
Joined: Sep 2010
Posts: 34,088
Likes: 257
From: Lantana, Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Just keep at it when you have time. It will take a little at a time to completely clean it out if its really built up.
Moderator CF K9-unit
Joined: Apr 2012
Posts: 5,842
Likes: 12
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
Ive done this many times to many rigs. I have not experienced one bad thing after using water to clean the carbon out,,only positive.
Ive since upgraded to snowballs.
Ive since upgraded to snowballs.
Last edited by Dumajones; Feb 9, 2018 at 11:28 PM.
Caracticus Potts The Mod
Joined: Jul 2009
Posts: 5,298
Likes: 9
From: Hainsville, NJ
Model: Grand Cherokee
Ive done this many times to many rigs. I have not experienced one bad thing after using water to clean the carbon out,,only positive.
Ive since upgraded to snowballs.
https://www.youtube.com/watch?v=2RvDa1UUk0s
Ive since upgraded to snowballs.
https://www.youtube.com/watch?v=2RvDa1UUk0s
Love it.
Moderator CF K9-unit
Joined: Apr 2012
Posts: 5,842
Likes: 12
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
Thread Starter
Newbie
Joined: Feb 2018
Posts: 12
Likes: 0
Year: 1998
Model: Cherokee(SJ)
Engine: 4.0L
Brother, you're 12 posts in and you want to start picking a fight with one of the most highly respected and trusted guys on this forum - who happens to be a moderator... just not a smart move if you ask me.
If you're not familiar with what he's talking about, that's fine - but cruiser's credentials are impeccable and experience is extensive.
If you're not familiar with what he's talking about, that's fine - but cruiser's credentials are impeccable and experience is extensive.
quick update. Tried SeaFoam and Water directly into the throttle body and it has made the roughness worse. Any other advice?
Junior Member
Joined: Apr 2015
Posts: 46
Likes: 0
From: Ocala, FL
Year: 2000
Model: Cherokee
Engine: 4.0
Check everything I checked in this thread. https://www.cherokeeforum.com/f2/200...-p0306-242067/
Also, did you check ur injector pulse at the plug?
Also, did you check ur injector pulse at the plug?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Nov 2015
Posts: 2,856
Likes: 201
From: syracuse ny
Year: 1997
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
This requires 1/2 lb. of elbow grease.
Check your firing order.
Put a plug on the end of the wire and ground it and see if it fires when running. if not, ignition problem.
Pull the injector connector and connect it to another injector and see if it clicks. Then swap them so you know the injector is good. If it dont click you have a wiring problem to the injector.
Pull the valve cover and see if a rocker came off the pushrod. I expect that would make a heck of a lot of noise though. Put pull it anyhow and observe operation of the valves when running.
Do all that and get back to me.
Check your firing order.
Put a plug on the end of the wire and ground it and see if it fires when running. if not, ignition problem.
Pull the injector connector and connect it to another injector and see if it clicks. Then swap them so you know the injector is good. If it dont click you have a wiring problem to the injector.
Pull the valve cover and see if a rocker came off the pushrod. I expect that would make a heck of a lot of noise though. Put pull it anyhow and observe operation of the valves when running.
Do all that and get back to me.
Last edited by 97grand4.0; Feb 17, 2018 at 09:55 AM.
Moderator CF K9-unit
Joined: Apr 2012
Posts: 5,842
Likes: 12
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
They needed to go rip the Jeep around a little, clearing the leftover SF out.
Go drive the Jeep,,kinda get on it a few times, get them rpms up there. Might just need to clear some crap out after SeaFoam treatment.
Last edited by Dumajones; Feb 17, 2018 at 07:25 PM.
CF Veteran
Joined: Jan 2015
Posts: 1,469
Likes: 26
From: North canaan Connecticut
Year: 01, 99, 98, 98,98
Model: Cherokee
Engine: 4.0
You could still do the leakdown test to figure out if a valve is not seating fully. Rule that out before you go swapping injectors and what not.