"I have a 1988 Mercury 50hp 2
"I have a 1988 Mercury 50hp 2 stroke 3 cylinder outboard and a motor that has been sitting for 4 years before using. The motor won't idle, idles rough and then dies. I didn't clean the carbs yet but I have fresh gas and install new fuel line and new fuel filter. I checked for spark in every plug and it was good. Any way I install each new plug. I Tested compression = 110psi in 2 cylinders and the compression is 90psi in the other. Cylinder 1 by the top compression is 110psi and cylinder 2 of the middle also the compression is 110psi, cylinder 3 underneath is little difference 90psi.
The cylinder 3 that could it be the problem makes motor won't idle? I should replace the piston rings?
I noticed white smoke coming out of the exhaust.
By the way with one is cylinder number 1: First on top or first on bottom?
Thanks!"
"I have a 1988 Mercury 50hp 2 stroke 3 cylinder outboard and a motor that has been sitting for 4 years before using. The motor won't idle, idles rough and then dies. I didn't clean the carbs yet but I have fresh gas and install new fuel line and new fuel filter. I checked for spark in every plug and it was good. Any way I install each new plug. I Tested compression = 110psi in 2 cylinders and the compression is 90psi in the other. Cylinder 1 by the top compression is 110psi and cylinder 2 of the middle also the compression is 110psi, cylinder 3 underneath is little difference 90psi.
The cylinder 3 that could it be the problem makes motor won't idle? I should replace the piston rings?
I noticed white smoke coming out of the exhaust.
By the way with one is cylinder number 1: First on top or first on bottom?
Thanks!"