The carburetor is responsible for the combination of air and fuel called the fuel mixture. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. This is because a rich fuel mixture is over-saturated with gas, causing ignition problems.
Mixtures that have too much air and not enough fuel are lean and tend to reduce the amount of power available under load and can cause stalling. In both cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple fixes. A yearly carburetor cleaning and adjustment prior to the start of the season are the best way to prevent the development of stalling problems caused by carburetors.
Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. The result is poor acceleration, rough idle and stalling. Restore formatting. Only 75 emoji are allowed. Display as a link instead. Clear editor. Upload or insert images from URL.
Starts, idles Followers 0. Reply to this topic. Recommended Posts. TeamLombo 2 Posted July 3, Posted July 3, Link to post. Posted July 3, edited. Mike Edited July 3, by TeamLombo. EZSnow 1 Posted July 3, It idles right at Killer 0 Posted July 3, I've never had a bad NSS act like that though. My '90 with pcm carby would idle and rev fine and stall out when put in gear: Short term I did the following: 1. Posted July 4, Surfin 2 Posted July 6, Posted July 6, TeamLombo 2 Posted July 8, Posted July 8, Thanks again to everyone for their input.
Thanks again, Mike. Posted August 10, DanShafer 0 Posted May 25, Back Explore View All. Back Types View All. Unpowered Boats Kayaks Dinghies.
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