1979 Harley Davidson XLH 1000 Sportster "backfire carb start" Questions

...start, but backfires out of the carburator, and flames out of the tailpipe. Non distibutor. plugs and points gapped appropriately. bendix carb is rebuilt. SOUNDS LIKE VALVES -ADJUSTMENT,SEATING OR ...

77 ironhead backfiring through carb, at highway speed but starts great and all ok till 55 mph. all new points, condenser, coil, plugs, wires, and advance mechanism looks fine. i have a 76 ironhead ...

...but after its running its OK.This just started what could cause this. Thanks JL By the term "backfire",are you referring to the engine spitting back through the carburetor or popping through ...

...Carb cleaning should be left to professionals unless one has experience doing it. 2. Open/broken vacuum lines can make it hard to start and backfire when letting off the throttle; jets that are not ...

hard to start then backfires through carb seems to idle fine once running full choke then when you rev engine backfires through carb Backfire through carb often means timing too advanced.

...backfire which came out of the carb. and bike would not start. Now I got bike to start but is still backfiring through carb. What cause this to start so suddenly, and is still causing it to continue? ...

...quad,started up drove around, was bogging and bucking,then after shutting off wont start, just backfires through carb while trying to start Make sure you don't have a leak around manifold side of ...

...both carbs open up simultaneously. If one carb opens sooner than the other then it 'drives' the other carb and can cause the backfire. Other things can can cause a backfire but lets start here

...start now unless u lean it to the right almost to the ground If you change the exhaust pipes, you have to sync the carbs (if you cant sync them, you have to change the carb jets), usually it is ...

(2) Ignition timing, if it's out. (3) Fuel level in the float chamber of the carb being too low. What exactly did you do to it..or did it just started to backfire...was the bike stored for a long time