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thebutelr
11-14-2009, 12:47 AM
Hey guys I just sealed up my exhaust leak and now I have a pop coming from the exhaust after I've had a good full throttle run. Here's the deal, I had removed the air box lid while the bike had an exhaust leak because it was running poorly and since I sealed the exhaust, I had to put the lid back on to get it to run right. The bike runs great now except for the loud backfire. Could this still be a lean condition? The bike is an 85' 350x and I have the following mods: 400ex carb, 400ex header, and 450r silencer with stock tip. Jetting specs are: needle clip two notches above middle, 138 main, and stock settings for everything else. Any help would be awesome :beer

thebutelr
11-20-2009, 09:19 PM
Just an update, I fixed the backfire issue I had with the 450r exhaust. Here is a pic of my mutt 400ex/450r exhaust lol. Yes I know the bike is dirty :D http://i100.photobucket.com/albums/m14/thebutelr/105_0357.jpg

Erics350x
11-20-2009, 11:00 PM
What was the backfire caused by?