Whodathunk
Active Member
Just a reminder for all those folks (Including myself) who've changed their exhaust system, ended up with a backfire (popping) on deceleration, and had no luck curing the problem by jetting the carb or fixing exhaust leaks.
Don't forget to check the intake manifold gaskets!
My bike ran great and only on a rare occasion would it pop when backing down. I put a new set of pipes on (with far less back pressure) and the popping got bad. I did the usual, checked the exhaust flanges and pipe connections, when they were good I figured it was time to step up the jets. The bike ran better but it still didn't stop the popping on deceleration. Then I remembered a post on here talking about bad intake gaskets and how people were jetting to compensate for it rather searching for vacuum leaks.
Sure enough, I pulled the manifold off and both sides were bad. A couple new gaskets and I was able to step back on the jet size with no popping.
I forgot the who put up the original post, but whoever did, thank you!
Don't forget to check the intake manifold gaskets!
My bike ran great and only on a rare occasion would it pop when backing down. I put a new set of pipes on (with far less back pressure) and the popping got bad. I did the usual, checked the exhaust flanges and pipe connections, when they were good I figured it was time to step up the jets. The bike ran better but it still didn't stop the popping on deceleration. Then I remembered a post on here talking about bad intake gaskets and how people were jetting to compensate for it rather searching for vacuum leaks.
Sure enough, I pulled the manifold off and both sides were bad. A couple new gaskets and I was able to step back on the jet size with no popping.
I forgot the who put up the original post, but whoever did, thank you!
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