11-13-2007, 07:52 PM #1
Think i found root cause for my lean piston
Well way back in like august i was running my slt 750 an it shut down. Started up wouldnt idel. Well there was crap in the intake. I had also lost compression on the pto cylinder it dropped to 90psi. But something got me thinking today. When i pulled the carbs off there was gas on the out side of the carb bodies rite by the atmospheric vent on both center an pto carb. Could a bad diagphram cause me too go lean due to leakage?
11-13-2007, 08:52 PM #2
What kind of debris did you find in the intake?
If the diaphrams ruptured, they wouldn't be able to deliver fuel very well.
11-14-2007, 02:02 AM #3
there wasnt derbis in the intake, but there was alot of crusty build up crap were the diagphram sits on the inside of the carb body. An the diagphrams were flimsy.
11-14-2007, 04:10 AM #4
If fuel is making it past the atmospheric vents and the carbs are full of smegma (sp) it's time for a rebuild. That "crap" sounds like it may be the hose falling apart, fuel algae etc. Maybe it's time to give the fuel system a once over??
11-14-2007, 10:04 AM #5
Hoses are only a year old Al, but iv already spent alot of $$$ to completly redo the carbs. I bought all mikuni brand stuff an didnt cheap out, not worth it.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By silvercrxsir in forum Yamaha Open DiscussionReplies: 3Last Post: 08-19-2012, 08:20 PM
By tysonfzr in forum Yamaha PWC Performance (4-stroke)Replies: 11Last Post: 01-03-2012, 06:14 PM
By xplayer2885 in forum Polaris Open DiscussionReplies: 5Last Post: 06-28-2010, 09:43 PM
By carbuff91 in forum Yamaha PWC Performance (2-stroke)Replies: 3Last Post: 05-26-2006, 09:16 AM
By myth in forum Yamaha PWC Performance (2-stroke)Replies: 10Last Post: 05-22-2006, 11:17 AM