Hot Rod Forum banner
1 - 2 of 2 Posts

·
Registered
Joined
·
8 Posts
Discussion Starter · #1 ·
I have a 350 Chevy suburban that starts and runs out good but on the highway after running at highway speed, if I take my foot of the gas I get backfiring out the exhaust also I have some trouble with spark plug caps getting hard and brittle. I have not seen any red manifold.
Any help for me or better yet my motor.
Thanks
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top