Exhaust Inst smooth
#1
Thread Starter
CF Veteran
Joined: Jun 2011
Posts: 2,460
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From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
Exhaust Inst smooth
Bit of a random question, but what does it mean if when you put your hand over the tail pipe the air comes out in sorta puffs instead of a smooth airflow?
Miss fire?
Miss fire?
Last edited by Zack92MJ; 07-13-2011 at 03:14 PM.
#4
CF Veteran
Joined: Aug 2008
Posts: 6,588
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From: Chico, CA
Year: 1986
Model: Cherokee
Engine: 4.3L with headers and full 3" exhaust system
If you are getting random puffs, it might mean a burned valve or miss. Hold a dollar bill from above so that the bottom gets hit by the exhaust. It should flutter smoothly. If not, you might want to do a compression test.
#7
Thread Starter
CF Veteran
Joined: Jun 2011
Posts: 2,460
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From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
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#8
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Joined: Oct 2010
Posts: 2,412
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From: York PA/State College PA
Year: 2001
Model: Cherokee
Engine: 4.0L I6
Are you flooring it up hill and it still bogs down? Mine will bog when its in a high gear up hill, but as soon as a put the peddle to the metal it shifts down and away we go!
#9
Thread Starter
CF Veteran
Joined: Jun 2011
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From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
No I didnt give it more gas, i stayed light on the peddeling cause it sounded cool,,that was probably my problem My buddy looked over at me and said "dude you jeep is loud as s*** right now and so deep sounding..its awesome, do you think I could get a glass pack for my corolla?!" haha
No but it does have a little bit of hesitation when going from a stop, but once I'm over like 5 it goes away.
#10
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Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
When was the last tune up? Check for vacuum leaks, clean your throttle body and IAC, and maybe run some injector cleaner through it...
#13
Thread Starter
CF Veteran
Joined: Jun 2011
Posts: 2,460
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From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
#14
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Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
You ARE using the lucas fuel injector cleaner, right? Don't use the oil stabilizer, you'll just be paying more than necessary for 80W gear oil lol... I use the lucas injector cleaner
#15
Thread Starter
CF Veteran
Joined: Jun 2011
Posts: 2,460
Likes: 0
From: Dayton, Ohio
Year: 1992
Model: Comanche
Engine: 4.0
Yep I am..I may look dumb, but im not that dumb. hahah
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