paddle Posted July 11, 2020 Share Posted July 11, 2020 Hi guys just did a compression test on my 750m engine after discovering its true miles 72k.i got 115psi on 1 2 3 cylinders and 20 on number 4 as the bike has not run for 5 years could this be a gumned corroded valve seat ?? Should I run it to seeif if it mproves the other 3 readings are very close together Thanks Quote Link to comment
Captain Chaos Posted July 11, 2020 Share Posted July 11, 2020 check the valve clearances on cil 4. Quote Link to comment
paddle Posted July 11, 2020 Author Share Posted July 11, 2020 Ok thanks I think the 750m engine is bucket and shim will pop the cover off and look Thanks Quote Link to comment
FJD Posted July 12, 2020 Share Posted July 12, 2020 I would try to get it running first - rusty valve seats maybe Quote Link to comment
paddle Posted July 12, 2020 Author Share Posted July 12, 2020 That's what I'm going to do I think Quote Link to comment
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