I have a 69 vw bug engine that i have totally rebuilt but seem to be having firing problems.

Asked by Feb 15, 2014 at 07:10 PM about the 1969 Volkswagen Beetle

Question type: Car Customization

Cylinder 2 and 4 are hitting solid and
perform great but 1 and 3 not so
much. These two cylinders hit but not
like 2 and 4 . Iv replaced plugs ,wires  
,distributor cap, and rotor also had my
heads rebuilt but still no luck. I have
two 34mm one barrels as my carbs
and was wondering if gas could be
whats throwing my motor off like this?
Im open to any advice pls help

2 Answers

100,345

Make sure the valves are set properly, if they are too tight that will cause the problem you have described.

1 of 1 people found this helpful.
70,255

Run a compression test and see if those two cylinders test low. If so, squirt about a teaspoon full of oil in them through the spark plug hole and retest. If the compression readings come up to where they should be there's a problem with the rings. If not, it's a valve problem. HTH. -Jim

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