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I see Fire or spark in one carburetor

I

igwchb

New member
"With my cover off the carbure

"With my cover off the carburetors on my V6 1988 200 HP Evinrude, with the motor running at 2000 to 3000 RPM,, (not at idle) I notice that while the motor was running, that in one of the carburetor I could see it fire, (or spark) But in the rest of the carburetor everything seemed normal. What could cause this? For I know on a two cycle engine the piston is suppose to be up pass the intake ports before it fires, but this seems to fire at a delay or before top dead center. If timing was off, it looks like to me I would see fire in all of the carburetors. Does anyone have any suggestion? Thanks, Ira"
 
"Hi, Thanks for your response.

"Hi, Thanks for your response. I checked the reed valves and they seemed to look find, I even held them up to the light and they seem to be sealing good. But I did notice that in that one carburetor on the reed valve housing that it looked a little burnt, not on the valve itself, but a burnt residue on the housing. The others looked find,, I checked the compression and all cylinders were the same. Do you think that it could be the coil for that cylinder going bad? Thanks, Ira"
 
"To test for a sticking reed,

"To test for a sticking reed, move it to another position. A lot of work but it tells the tale.

What is the compression readings of all cylinders on that engine?"
 
That's normal readings. Us

That's normal readings. Usually that model registers 95 psi on the starboard bank and 90 on the port bank.
 
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