Compression on my 175 evinrude with starting problem

[XRFjlong]

ok i just check the compression and they are the following

90,90,100 110,100,85

whats your thoughts?? i had previously posted about the bendix kicking out whien it was turning over and someone said it may have low compression on one cylinder are those numbers ok??

 

[jtexas]

Re: Compression on my 175 evinrude with starting problem

#6 is too low, 23% below #4. with luck, maybe just a head gasket. How does that plug look? compared to the others?

 

[emdsapmgr]

Re: Compression on my 175 evinrude with starting problem

Is this a crossflow? An engine that is low on compression is also low on crankcase suction. Low suction means low fuel flow, poor performance, poor starting, etc. You could have some carboned rings. I'd run some Engine Tuner through it and retest the compression. If it still does not come up, pull the heads and esp the (crossflow) bypass cover on #6.

 

[XRFjlong]

Re: Compression on my 175 evinrude with starting problem

it was dark out but it looked ok