| Author | Message | ||
     Torquemonster |
Recently, an exhaust stud broke off and I had to remove the head to have it fixed. After re-assembling the bike, I have found that I now have a throaty exaust pop on decel that wasnt present before. During the fix, the carb was removed but was not tweeked (to my knowledge), and new 8mm plug wires were installed. Besides that, new gaskets and a new stud, there were no other changes made to the bike. Anyone have any suggestions on what may be causing it? IIRC, these bikes were slightly lean from the factory, right? I havent drilled out an access to my mixture screw yet, so I dont know how it couldve been leaned out more than before....kinda at a loss here. | ||
| Djkaplan |
If the carb hasn't been rejetted, it should have been popping pretty good on deccel already. That is a bit of a quandry. I'd double check the rubber intake/carb seal for a leak. A bad seal there can cause a vacuum leak bad enough for the bike to go leaner. I'd rejet that carb, too, if it hasn't been so already. It only costs the price of a pilot jet to start. I think you can get one at a dealership for under $5. It's easy too... especially if you've spent a weekend over a bank of Mikunis. If the popping is still there, you got a leak somewhere, but I doubt it's where the primary joins the exhaust port. Leaks there will sound like metallic clicks that you'd notice at warm up. | ||
| Jamesw |
I just put an 01 engine in my 97 and have the same issue. IIRC - the decel pop was caused by a header leak the last time I worked on it. Try warming up the bike with the headers a bit loose. Once everything is warm and then carefully reset them into the gaskets and tighten up the headers (not too tight :-). Cheers, -JamesW- | ||
| Richieg150 |
Try taking the exhaust off the heads,installing new gaskets,torqeing the exhaust nuts.........not just hand tightening them where they feel right....it will most likely stop your popping on decel. | ||
| Torquemonster |
Thx all. txtng from fone, so srry for the shorthand. main jet is stock and slow is a 45 iirc. nuts may b 2 tight so ill try that first. thx again! |
