4.0L sputter - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 03-28-2000, 01:53 PM Thread Starter
 
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4.0L sputter

wondering what would cause a 4.0L to kinda sputter? from a stop stepping abit heavily on the gas the engine doesn't run real smooth, best way to describe it is a sputter or chugging...what might cause this? any fixes? and would the fix be cheap or expensive? thanks for any info!

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post #2 of (permalink) Old 03-28-2000, 02:55 PM
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Re: 4.0L sputter

check the oxygen sensor or the tpi sensor....its always and ignition computer problem that gets you

post #3 of (permalink) Old 03-28-2000, 03:08 PM
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Re: 4.0L sputter

Maybe poor carburation or wrong fuel/air mixture? Could be timing problem also. Is it a consistent problem? What kinda gas do you use (octane rating). I just read in the "Jeep Owners Bible" that all straight 6 motors for Jeeps are designed to work with 91 octane and higher gas. You might try that. Mine sometimes chuggs or sputters a little when cold, but I'm pretty sure that is a choke problem (not functioning whatsoever). You might look at that too. I think mostly those symptoms are incorrect fuel mixtures, too much fuel, etc. etc. You could be on the right track by checking the 'puter like pimpin said.

If you are unsure, spend 35 bux and do a tune up. New plugs, change the oil, maybe some new plug wires, dist. cap, etc. That ought to help a whole lot.

Carl, Tampa, FL, 74 CJ-5
If a Jeep can't take you there, Think twice about going..
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