04-04-2009, 11:32 AM #1
- Join Date
- Nov 2007
Sea doo XP limited backfiring out the exhaust
I have a 1999 Sea doo XP limited w 947 engine
backfiring out the exhaust when I crank it
and won't start
carbs were gunked up with old gas so both were rebuilt, accelerator pumps cleaned & tested, fuel system cleaned, fresh fuel, etc...
compression is good, crank/pistons seems to be in line, etc...
currently checking the mag side flywheel key
also pondering an air leak in the engine
Any others had this problem or something similar
04-04-2009, 09:30 PM #2
- Join Date
- Jul 2005
when the carbs were off something could of gotten stuck inside the reed cage area or a reed is broken. Simple, take the carbs back off & reeds out & check.
04-05-2009, 06:15 PM #3
While the carbs are off and your checking the reads make sure the Needle and seats are set right. I have forgotten to check and had a carb dumping fuel. It gets into the pipe and gets ignited.
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