This engine really does live up to it's name! When at idle speed it spits or as some folks say it "sneezes". This is indicative of a lean fuel condition (air). I just recently had all 6 carbs rebuilt at a local shop. While troubleshooting it, they hooked it up to a shop tank to eliminate the external fuel system. After a lot of tinkering and 3 mechanics scratching thier heads, they claimed to have the problem corrected. However, it is still sneezing though not as badly. Any sugestions?
I bought it a bout a year ago, and it has always coughed a bit. It recently got worse where it was hard to keep it running while at idle especially when I was slow trooling off-shore for kings. It's much better since the carb rebuilds but still has the sneezing problem.
Port Charlotte FL but never the same since hurricane Charlie
Re: 1992 150 HP Evinrude "Spitfire"
Good. Make sure they are Champions. I believe they call for QL82YC's. I use QL77JC4's in mine. Another thought, if the motor is set up in the low to mid 5000 range it might be a good idea to decarb. That may help clean up the idle.
Are you referring to the Engine Tuner product that OMC makes? I used it in the Spring according to the directions. Is there something else I should consider? I'll check the plugs and replace as suggested.