Logo
FULL SITE MENU

98 Evinrude compression problem

J

jonrambo

New member
"I have a 1998 Evinrude that d

"I have a 1998 Evinrude that doesn't fully compress in #3 cyl. I have been using it and had very little trouble until last weekend. If I keep running it will it eventually blow-up? If it does have I done more harm to what I plan to rebuild? Also I notice there are two different cc engines, how do I find out what mine is 1632 or 1726?"
 
It is not going to fix itself-

It is not going to fix itself----If you keep using it it is just going to cost more to fix it ----simple enough.
 
"That doesn't answer my qu

"That doesn't answer my question! I believe that if I'm going to have to rebuild a cylinder I might as well put a new or rebuilt powerhead on. Thanks, Genius!"
 
If you would post your model #

If you would post your model # then we could tell you the CC of your motor without that we are BLIND.
 
"Gee, with that attitude, I&#3

"Gee, with that attitude, I'm sure everyone's going to want to jump right in and help you."
 
"Yes, if you keep running the

"Yes, if you keep running the engine, it will obviously and eventually blow up at some undetermined future time. And yes, the blow up will of course result in even more damage than what now exists. The model number will define the displacement."
 
"Because the engine has not be

"Because the engine has not been run in so long,3 times in 5 years, I had hoped it was carbon builb up and would possible clear itself out. It doesn't knock it just idles rough and the carb seems to load up after ideling for long periods. Is it possible that there is so much carbon it is hitting the cylinder head? Does this motor have reeds and if so is it possible that one of them is bad? I have been told several different ways to burn the carbon out.....is this safe?

Sorry for the attitude. I was having a real bad day! Don't want to piss Rambo off! LOL!"
 
Yes it has reed valves.Reed va

Yes it has reed valves.Reed valves have absolutely nothing to do with cylinder compression----the reeds in fact should be open when cylinder compression occurs.
 
carbon doesn't just build

carbon doesn't just build up in an engine when it's parked. The 3 times in 5 years doesn't make carbon.
What are the compression numbers you got?
 
"You've got a 35 psi diffe

"You've got a 35 psi difference between the lowest and highest compression reading.

First move would be to remove the cylinder heads to inspect the pistons, cylinder walls, and undersides of the cylinder heads."
 
Back
Top