exhaust popping and backfiring
#1
exhaust popping and backfiring
i just bought a '02 dyna super glide carbureted with screamin eagle pipes. the bike came from Colorado but i live in Ohio and was wondering if the difference in elevation would cause the bike to pop or backfire on decelleration? do i need to rejet? thanks in advance.
#3
i just bought a '02 dyna super glide carbureted with screamin eagle pipes. the bike came from Colorado but i live in Ohio and was wondering if the difference in elevation would cause the bike to pop or backfire on decelleration? do i need to rejet? thanks in advance.
The stock CV carb generally "immune" or self adjusting due to the effect of air density on the movment on the slide.
Last edited by djl; 03-24-2012 at 11:03 AM.
#4
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#6
I had continuous issue with what you are describing with my 94 EVO and stock CV carb. I sent it to Killer Motorcycle and it came back with large changes--at least I thought--in jetting. From a 165 main to a 190, and 42 to 48 idle/slow jet. Plus, for $189 Dale rebuilt it entirely. The bike runs better than it ever has, and all backfiring/popping is gone.
Just to mention, BEFORE I did this, I had changed out intake seal, changed out exhaust seals, made sure everything was tight. But the leaning out of the bike and backfiring/popping on deceleration continued. You can change these jets out yourself. Piece of cake.
Lastely, since I got the carb back from Dale, I've gone to Wiseco 10.1 pistons, Andrews EV27 cam, and the bike still runs super, plugs look perfect, and I'm getter BETTER gas mileage.
Just to mention, BEFORE I did this, I had changed out intake seal, changed out exhaust seals, made sure everything was tight. But the leaning out of the bike and backfiring/popping on deceleration continued. You can change these jets out yourself. Piece of cake.
Lastely, since I got the carb back from Dale, I've gone to Wiseco 10.1 pistons, Andrews EV27 cam, and the bike still runs super, plugs look perfect, and I'm getter BETTER gas mileage.
#7
We set up a friends bike that came from Ft Collins this winter. It required re-jetting, along with a good tune to run well at sea level. If you're still backfiring through the exhaust, you've likely got an exhaust leak somewhere. Check the header to flange, and the header to muffler junctions. I like to use a hi-temp copper sealant at the header to muffler joint to ensure a good seal. I don't think any backfiring or loud popping should be considered normal.
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