Plugs fouling on rebuilt engine???

[jd21476]

I just rebuilt the engine on my SD 800 and it runs fine but fouls the plugs after about 5 minutes. The plugs are black. Does anyone know the problem??

[frankey01]

Re: Plugs fouling on rebuilt engine???

carbs are not set correctly or you dont have proper fuel oil ratio in your tank.

[JetSkiRider721]

Re: Plugs fouling on rebuilt engine???

yea u could have more oil than needed but its better to foul plugs then to run to lean and burn the pistons

[Bill O'Neal1]

Re: Plugs fouling on rebuilt engine???

Somebody probably opened the high speed adjusters thinking they should be "safe"............. Close them.