Would a hole in the muffler of a 1990 chevy cavalier 4 cylinder cause a spark plug to blow out?

Question

I have retreaded the the hole in the head of my cavalier and the spark plug continues to blow out I have rethreaded the the spark plug and tapped the the head.

Answer 1

No!

Answer 2

no, torque the plug in right, & get a new plug, my dads truck has only thrown a plug once, & it was the wrong size(sob's @ autozone did it)

Answer 3

Buy a NEW spark plug AND a thread repair kit for it... follow instructions. Hope this works or you are looking at removing the haed for repairs.

Answer 4

no it won't cause that. sounds like the hole has been stripped a couple to many times. good luck

Answer 5

You rethreaded the spark plug and tapped the head? You should put in a NEW spark plug and install a healy coil into the head after cleaning the threads with a tap. If the spark plug keeps blowing out, then it sounds like you havent done so.

Answer 6

No you will have to look at your fuel feed ,for your engine is running hot  

Answer 7

No, it will not. When you rethreaded the hole did you just chase the threads, or did you actually ream and tap the hole to a larger size and install an insert?

You may need to try something like this if you haven't already:

http://www.mytoolstore.com/kd/kdengi11.h...

I've installed lots of those inserts into aluminum heads and they work great.