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Old 08-20-2009
scottyt scottyt is offline
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yanmar 1 gm valve job ? with story

okay i finally found out my starting problem. a few months ago my motor started in a second or 2. for the last 2 months it took me many mins to get it to start, i started to suspect my injection pump.

well a few days ago i decided to play with the motor, and i was turning it over by hand crank with the valve cover off, i heard a hissing. so i decided that it was probably my head gasket, so i picked one and to change it out. i got it changed out but in the process the oil line to the head broke. lucky the fittings are brazed on and a a short piece of brake line later that was fixed.

tonight i went to put on the oil line, and i brought a stethoscope to listen. i found out i was loosing some compression thru the intake value.

so i pulled the head again and pulled both valves, the intake valve seat is cracked, the exhaust valve seat is eroded. the intake valve looks reusable the exhaust valve i doubt it.

has anybody ever had new seats put in and maybe new valves and what did it cost???
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