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1,550 Posts
#1 I'm glad you did a compression check 1st!!!
#2 90lbs is low for that engine, that's a pretty high compression motor 110+ seen some as hish as 130.
# I don't think that is your problem though, 90lbs on both cyc. (assuming that's what it is, maybe higher if you were to use a better gauage if you used a cheap $20 guage) Nor do I think you have a blown head gasket, it doesn't cause a grinding noise. But to answer your question it's pretty straight forward to change on your engine.
How does the motor sound at idle? How does it sound on the hose? Pull the cowling and rev it up in netural by the carb? Pull the oil drain plug in the LU and see if you have metal frags.
That motor should not have the starter engaged when not running, Put some grease on the bindex shaft and work it up and down by hand,
Geeze that sounds kind of -----
but you get the point
#2 90lbs is low for that engine, that's a pretty high compression motor 110+ seen some as hish as 130.
# I don't think that is your problem though, 90lbs on both cyc. (assuming that's what it is, maybe higher if you were to use a better gauage if you used a cheap $20 guage) Nor do I think you have a blown head gasket, it doesn't cause a grinding noise. But to answer your question it's pretty straight forward to change on your engine.
How does the motor sound at idle? How does it sound on the hose? Pull the cowling and rev it up in netural by the carb? Pull the oil drain plug in the LU and see if you have metal frags.
That motor should not have the starter engaged when not running, Put some grease on the bindex shaft and work it up and down by hand,
Geeze that sounds kind of -----
but you get the point
