1995 Evinrude 40 horse Tiller

R

RickJ

Cadet
Joined
Jun 22, 2002
Messages
6
Am told my engine has good compression in one cyl(120) and bad compression (90) in the other. No visual inspectiom was done. This cost me $125. Would this clearly suggest one cylinsd is bad and needs repair/replaced? Is ther any other possible cause? Is a visual inspection necessary<br />to confirm. Is $125 reasonable for this work?<br /><br />Thanks,<br /><br />RickJ
 
B

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
Re: 1995 Evinrude 40 horse Tiller

Hey Rickj,<br />Wow! $125 for a compression check on a two cylinder engine? Hope he did more than just that. Why did you take the motor in? What were the symptoms? Did he offer any diagnosis?<br />Low compression in one of two cylinders could also be caused by a blown head gasket.....the gasket doesn't always blow between the cylinders. It could also be caused by sticking rings in one cylinder. Try decarbing the engine. <br />Good Luck,<br />Backlash
 
R

RickJ

Cadet
Joined
Jun 22, 2002
Messages
6
Re: 1995 Evinrude 40 horse Tiller

Backlash, the symptoms were the fact that the engine would die and anything daster than 25 % throttle and would not idle.<br /><br />Thanks,<br />Rickj
 
B

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
Re: 1995 Evinrude 40 horse Tiller

Hey RickJ,<br />I'd get some Seafoam and follow the directions to decarbon the motor.....then check the compression again. If it's still low in the one cylinder, I'd pull the head & check the gasket. Good Luck.<br />Backlash
 
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