lost_and_confused
New member
"Hey everyone
I have a pro
"Hey everyone
I have a problem with the #1 plug blowing apart, Not pulling out of the threads but coming apart. The engine is a 1968 Mercruiser 120hp 4-cyl.. The motor run great for awhile and then it back fires up through the carb, I then power down and then back up runs fine again and then the #1 plug comes apart. The threaded part stay in the head and ceramic comes out. It did this twice and always to the same cylinder.
Thanks for any help."
I have a pro
"Hey everyone
I have a problem with the #1 plug blowing apart, Not pulling out of the threads but coming apart. The engine is a 1968 Mercruiser 120hp 4-cyl.. The motor run great for awhile and then it back fires up through the carb, I then power down and then back up runs fine again and then the #1 plug comes apart. The threaded part stay in the head and ceramic comes out. It did this twice and always to the same cylinder.
Thanks for any help."