Posted by super99 on December 03, 2020 at 04:22:05 from (184.20.245.17):
My post about my 400 is back page or so, so I'll start another. Gas motor, fouls the spark plugs in an hour or so run time, very cold blooded. The shaft in the distributor was sloppy, so I replaced that with a new set of points, condenser and plug wires. I was using it yesterday, so I shot some starting fluid around the intake manifold with no change is how the motor ran, so the intake is not leaking. I did a compression test on it. First reading is just after running it for a few of minutes. #1- 110# added 10 squirts of oil, still 110# #2- 110# added same amount of oil, 115#, #3 110# added oil 115#, #4 110# added oil 125#. Each time I cranked it over 10 times until the needle stopped moving. I have non foulers on all of the spark plugs. I went thru the carb a couple of times and finally took it to a guy in the tractor club that runs a repair shop and has many old tractor for him to rebuild. I finally got it adjusted to where it runs fairly decent, but it black smokes like it is running very rich. On cold start up, it smokes blue for a bit. I'll pull the valve cover and check the tappet settings, but it has a loader on it, if I have to pull the head, I'll take the loader off first. I'm think it needs new rings. It doesn't get run very long at a time and I have nothing to put a load on it to make it work hard. Chris
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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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