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"explosive" popping sound when firing up

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Old 05-10-2011, 03:29 AM
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lucospock lucospock is offline
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Default "explosive" popping sound when firing up

Hi,
first of sorry if this question has already been posted (I couldn't find answer on the forum and internet).
I have a 07 nightrain with Vance and Hines exhaust with quiet baffles no map, and recently when firing her up, I hear a "terrible" explosive sound.
Does anyone know where this come from (this wasn't there before) and how can I fix this?
thank you guys for any response!
L
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Old 05-10-2011, 08:49 AM
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sounds like an intake leak,or your dumping raw gas in the pipes

Last edited by prodrag1320; 05-10-2011 at 08:54 AM.
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Old 05-11-2011, 08:43 AM
Old Gunny Old Gunny is offline
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Intake lean can be checked easy.

Need a tuner TTS or SEST, or like that, to cut cranking fuel at the temperatures you see this kind of cranking result.

Tunners are the new screwdrivers for Fuel Injection.
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Old 05-13-2011, 04:36 AM
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now it stopped...
however could this be due to a gas tank that has been too overfilled ( when I did the filling that day, I have filled too much with gas).
Thanks for responses!
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Old 06-04-2011, 10:10 PM
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Fouled plug has made my old Heritage sound like a shotgun. Neighbors actually called LEOs.
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2011, davidson, decal, engine, exhaust, explosive, glide, harley, makes, noise, pop, popping, sound, sounds, tri

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