Loud back fire - Frymaster Dean Kitchen Appliances - Others

The most common reason would be excessive fuel in the exhaust, from a leaking injector or other problem.

timing issue, (timing belt or chain) fuel being ignited in the exhaust pipes not the cylinders

Check to see of there is a problem with the catalytic converter, if there is it can create a snowball effect of problems, your muffler can get blown out from the back firing, bad coil s, bad o2 sensors, bad gas mileage and a loud system to many more

Back fire back to where, the intake or exhaust.
intake backfire is a pop sound, not too loud, and is bad timing.
exh backfire means, fuel plus air is in the exh.
and explodes with a loud report , we call it muffler explosing to help
with clear meaning.... in this latter example
you have a bad running motor (rich as pig) a dead CAT and exhuast air leak
all at the same time.

Try putting a new sparkplug in could be fouled out. loud pop was just a back fire.

when to turn it off, the spark plugs stop instantly but the fuel is still sucked into the combustion chamber. your idle might be adjusted too high. try using a higher octane fuel

this sounds like the gas solenoid valve you may need to change the coil on the solenoid valve

Watching tv all of a sudden loud buzz noise,I shut off unit turned back on loud buzz came back about 30 seconds later loud pop pop then smoke came out of top of unit, i'm not please as this unit i bought about 17 months ago @ Canadian Tire Belleville & warranty is now not covered, pobably will never buy another Proscan product but am more concerned there could be a fire caused buy this than getting unit replaced

out of time

000km. ok so it has devloped a bad miss (similer to what they all do at 2800rpm) under 5grand not as bad over 4k rpm. I can hear the engine often back breathing and hissing and a heavy knock when back firing under slow excelaration the bike is back firing a lot not loud but wee crackels (after market pipes but not loud) sometime you get this with a leak in the pipes If it's knocking under load it almost sounds like it's detonating (which you wouldn't want to riding it too much if it's doing that,it's very hard on the engine components) and that makes me think that your timing sensor is playing up,which would also account for the engine spitting back down the intakes and back firing out the exhaust.I hadn't told you yet but I ended up buying both the Quota and NTX 750,reading the workshop manual for the Quota it looks a pretty simple job to diagnose problems like you have if you have the software,I don't have it yet so that doesn't help you out.Hampton Motors in Carmen RD are the new Guzzi agents here,get them to hook it up and the bikes computer should be able to let them know whats going on.,,,