Missing Chev 400ci engine
10

Asked by Richard Mar 16, 2022 at 09:41 PM about the 1964 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

I fixed a float level problem in my Holley 4bbl on my 400ci Chevy engine. When
I started it it ran very rough. I have exhaust headers and could feel them
individually. Only cylinders 1,2,and 3 are firing, the rest are cold. I pulled the
plugs, cleaned and gaped them. The distributor cap/rotor look good. Any ideas?

4 Answers
310,565

Gene answered 2 years ago

If your still using a points and condenser distributor check the point gap and for distributor shaft wobble. If you have upgraded to solid state then you have a problem with the distributor pickup coil.

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157,855

James answered 2 years ago

Also do a compression test. If the vehicle sits for extended periods of time you may have stuck valves. If the non firing cylinders test zero, that's what's going on. Hope that helps! Jim

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10

Richard answered 2 years ago

I replaced the plugs and the problem was fixed. I think the flooded carburetor so fouled the plugs that, even after cleaning, they still shorted. Thanks for your help.

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