Posted by IOWA NORTHEAST on June 09, 2010 at 15:34:25 from (206.72.18.89):
The carb has been rebuilt, new gas tank, new fuel line, new sed bulb asembly. New plugs, and the front mound dist looks fine and we cleaned the points.
In order to remove the spark plugs, I had to pull the head, and heat two of the busted off spark plugs. When I did, there was absolutly no ring grove at all, so I would assume the valves were ground at the time it was overhauled.
It has a new battery (6) volt, but the starting is sluggish, it has new battery cables.
The thing ran like a million dollars till we put the belley mower on it a actualy gave it a work out. Now after twenty munites, it starts to miss to the point it can not power itself on the level in low gear.
The past three times we run it this has happened, but we always charged the battery prior to starting, I'm wondering if the battery is going dead, and shutting down the spark. I so far have not checked the coil, but I did pull a couple plugs in case they were fouling --to jump the spark--that did not help at all.
Now I'm wondering if the valves could be the issue? I'm sorry, I just haven't had time to mess with it like I should have to find the problem. Any other suggestions that I may be overlooking?
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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