Honda GX390 problems
#1
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Join Date: Nov 2017
Location: Finland
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Hi!
I have a problem with my Honda GX390 that I got for free from my grandpa because it needed new pistonrings. Now I've replaced the piston and pistonrings but there is a looot of friction when turning over the engine and it only has 70 psi compression. I've set the valve gap to 6 thou intake and 8 thou exhaust. Headgasket is also new. Bearings feel good and spin freely
What could cause this?
I have a problem with my Honda GX390 that I got for free from my grandpa because it needed new pistonrings. Now I've replaced the piston and pistonrings but there is a looot of friction when turning over the engine and it only has 70 psi compression. I've set the valve gap to 6 thou intake and 8 thou exhaust. Headgasket is also new. Bearings feel good and spin freely
What could cause this?
#2
Did you check piston ring end gap when you installed them? I assume you properly honed the cylinder and there were no bad spots or gouges?
#4
The crosshatch pattern is worn down and smooth now, it won't seat in your new parts. It's broken in to the old rings.