new engine(stroker) runs rough after 2500
10-25-2011, 03:52 AM
#1
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
new engine(stroker) runs rough after 2500
My stroker is running and my cam broke in. I went to go seat the rings but the engine wouldn't run good after 2500. Thought it was the distributor even though I thought I got it perfect. Its way off now but ill find it in the morning as per the manual. Is there anything else that would cause this? Injectors are good. Gas rail pressure is good. Idled fine when it started.
10-25-2011, 09:55 AM
#4
CF Veteran
Join Date: Jun 2009
Location: Columbus, Ohio
Posts: 2,173
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
the manual gives you two methods to drop the distributor... I found when I did my cam that the alignment pin method will not work, kept putting me a tooth off. had to use the point the rotor at number 1 method.
10-25-2011, 06:53 PM
#6
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
K so I put the distributor back in where it idles good. When I floored it, it backfired once out the exhaust and once out the intake. still wont rev past 2500. slow or fast. is that still a symptom of being a tooth off? I tried moving it a tooth advanced and It didn't run. I tried retarding it a tooth last Night (it was late so I might not have got it)
Any Ideas?
Any Ideas?
Trending Topics
10-25-2011, 07:52 PM
#9
CF Veteran
Join Date: Oct 2009
Location: somewhere Gee oh Dee cant find me...
Posts: 4,529
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1995
Model: Cherokee
Engine: I6 4.0L
either try retarding it 1 tooth, or advance it 1 tooth from what the factory had it at, couldnt remember what i did when i had this problem
10-25-2011, 09:52 PM
#10
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
K I retarded it one tooth and It idles better a little, but still, cant get past 2500. The engine is down right mean until 2000-2500 then its like its not getting enough air or fuel, or its not sparking. its weird. Sensor maybe?
10-26-2011, 07:27 AM
#11
CF Veteran
Join Date: Jun 2009
Location: Columbus, Ohio
Posts: 2,173
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
do you have access to a timing light? I know the timing is not adjustable, but it's a way to verify if the distributor is dropped right. How is the wear pattern looking on the drop gear? What injectors did you use?
10-26-2011, 09:35 AM
#12
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
Originally Posted by Donnie_K
do you have access to a timing light? I know the timing is not adjustable, but it's a way to verify if the distributor is dropped right. How is the wear pattern looking on the drop gear? What injectors did you use?
10-26-2011, 09:36 AM
#13
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
How about this. My crank didn't have a key way so my balancer is just pressed on and the timing mark is off when I'm at tdc.
10-26-2011, 02:59 PM
#15
Senior Member
Thread Starter
Join Date: Oct 2009
Location: Southern Utah
Posts: 532
Likes: 0
Received 1 Like
on
1 Post
Year: 1992
Model: Cherokee
Engine: 4.0 I6
Yea, just went and got one at parts plus. Hope it fits. Hope its the reason my jeep is acting weird. Will post back once I put it in.