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-   -   Open Headers and Misfiring (https://chevroletforum.com/forum/nova-chevy-ii-102/open-headers-misfiring-84957/)

mletson August 10th, 2017 8:31 PM
Open Headers and Misfiring
 
Hello,

I have a 383 Stroker in a 1974 Nova. Runs great except .... When I open up the exhaust using my electric cutouts, the motor misfires like crazy. It misfires a little when they are closed but when open, it's horrible.

Any thoughts?

prostreet406 September 28th, 2017 4:23 PM
Originally Posted by mletson (Post 342325)
Hello,

I have a 383 Stroker in a 1974 Nova. Runs great except .... When I open up the exhaust using my electric cutouts, the motor misfires like crazy. It misfires a little when they are closed but when open, it's horrible.

Any thoughts?
Would start with dist. cap and rotor, check spark plug wires next

kevinkpk September 28th, 2017 5:24 PM
Might be sucking air through the exhaust


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