(Compression) 85 hp evinrude

[howsab0007]

how much should each cylinder have???and is it normal
for the back of the engine to get really hot when running? i just got this engine so dont really know alot about it...my first evinrude 76 model thx for all the help you can give----- Howie

 

[ezeke]

Re: (Compression) 85 hp evinrude

In my opinion, at sea level, 650 cca fully charged battery, throttles in full warm-up position, motor at operating temperature, all plugs removed, using screw in tester, 110 to 135 psi.

Variation not to exceed 10%.

Indications: if lower or if variation exceeds 10%, decarb and retest; If decarb fails to improve, buy the cylinder head gaskets and visually examine the cylinders.

 

[emdsapmgr]

Re: (Compression) 85 hp evinrude

Around 125 is normal for that engine.

 

[xtraham]

Re: (Compression) 85 hp evinrude

heads should not be so hot that you can not hold your hand on them for 4/5 seconds,assuming it is in the water or running on muffs, replace the water pump with a complete pump kit, if the engine is running ok,,