Firing problem

[Javman]

1993 175hp evinrude intruder fires good on the left side but kinda of weak on the right. engine is idling really rough. what could it be?

 

[OBJ]

Re: Firing problem

Javman....how do you know it's fireing better on one side than the other? Did you take a spark test?<br /><br />I'm trying to get more info outta you on what you've done so far to troubleshoot the engine.<br /><br />Have you taken a compression test on all cylinders?<br /><br />What do the plugs look like and when was the last tune up done?<br /><br />Thanks

 

[Javman]

Re: Firing problem

I put new sparkplugs in it a couple of days ago. The test I ran was holding the sparkplug close to metal cheching spark. While the motor was running I pulled the sparkplug wires one at a time. On the right side the motor had no change as soon as I pulled the first one on the right the motor went to stalling. When I pulled the second one it quit. I told my mechanic what it was doing and he said I had an ignition problem but he can't get me in until Tuesday.Anything I can do to avoid taking to the shop would be greatly appreciated.

 

[Javman]

Re: Firing problem

Compression on bad side was about 25 on good side 95 to 100.

 

[Solittle]

Re: Firing problem

I would suspect a blown head gasket at a minimum. You will have to pull the head and carefully inspect the "innards."