How do you fix an Engine that has too much compression?
Its a Riding mower engine, And im frazzled with it!! its 16 oh or somthing like that
2008-07-09T19:11:20Z
16 OHV not 16 oh
2008-07-09T19:19:06Z
I know about OHV,, the reason that i think that i have too much compression is that i cant hardly turn it when it gets past every second turn, just before it gets to the ignition coil or whatever powers the spark plug, and then it stops being hard when it gets past the oil dipstick
2008-07-09T19:31:42Z
How do i do all of this stuff ? please email me with HOw TO's please.
Lover not a Fighter2008-07-09T19:15:24Z
Favorite Answer
You can lower it slightly by getting ticker gasket.
But what makes you think you have too much compression
Good Luck...
16 OHV = 16 over head valve. It is not a measure of pressure
mdk68gto, ase certified m tech2008-07-10T09:07:10Z
if you are sure about this, i have a trick that i used on my car for the very same problem, and it worked very well. do a compression check on all of the cylinders to get a starting point and to confirm your diagnosis. (if you pull all of the plugs out, it should be easier to turn the engine over) i used a camping stove and a tea kettle to administer steam into the engine as it ran, but you might pull the muffler off to prevent the carbon from plugging it up. let it idle like that for about 10 to 15 minutes. shut it down and do the same compression test again. on my car i had a 20 psi drop on the troubled cylinder. it had such a great effect that smog went by so much easier this year.
You're pull starting a 16 horse engine?!?! That may be your problem. Tha'ts a tough pull!
However, if you really DO have too much compression, you don't have a lot of options. Double stacking the head gasket can sometimes work, but this arrangement won't last as long as if it were stock.
Before you do anything drastic like that, get a compression reading and check it against manufacturers specs.
unless someone rebuilt this motor at a zero deck height or a fat oversized piston, you may have gobbs of carbon in your head and piston top. most mowers sit all but 5 months out of the year up here in Maine, and bad gas and burn patterns are poor for the first couple cuttings