Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: RockItMan on August 03, 2006, 03:24:38 PM

Title: LPG/gasoline dual fuel grand cherokee experience? HELP!
Post by: RockItMan on August 03, 2006, 03:24:38 PM
Hello, hope someone out there can help!
I have a v6 grand cherokee, running on dual fuel liquid petroleum gas and gasoline (petrol)
I have only owned it a couple of months and all has been fine.
However running on either fuel there does seem to be excessive tappit noise from the valves, especially when accelerating.
I am unclear if this is normal with a dual fuel conversion or if it valve wear? basically it sounds like a diesel engine!!!
Hope some one can whisper some words of wisdom?
With Thanks,
Paul
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Post by: JamesH on August 03, 2006, 04:36:55 PM
Hi RockItMan,

Give some more details of the setup if you can. What year is your grand, what mileage, what type of LPG system (brand, single or multipoint etc.) how long/miles has it been fitted.

I'm sure we can help but the more info the better  :wink:

 :)
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Post by: tim_aka_tim on August 03, 2006, 06:07:52 PM
Can you also confirm the engine size...... the ZJ never got a v6, just a 4l I6 and a 5.2 V8 (over here).
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Post by: chrisjones on August 03, 2006, 07:45:24 PM
If it's the straight 6 4L then it could be a cracked exhaust manifold.  It's a common problem and causes a ticking noise that sounds very much like noisy tappets.

The straight 6 engines don't tend to suffer from top end noise, but have often been mis-diagnosed because of a cracked manifold. :wink: