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-   -   1999 Chevy Venture Engine Problems? (https://www.sparktalk.com/forum/chevrolet-spark-general-discussion-forum/53097-1999-chevy-venture-engine-problems.html)

caj767314922 09-27-2016 02:20 AM

1999 Chevy Venture Engine Problems?
 
They own a 1999 Chevy Venture with 142k miles, The engine knocks real hard at random times Vag com 16.8. They have replaced 3 spark plugs and wires (they cannot reach the back 3 without taking out the engine). When they use a little higher grade gasoline it seems to run better. Do you think a product like Zmax, or Sea Foam fix it? They think that we are only running on 5 cyl.


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