91 907ie back fire

1564 · **Posted:** Tue Feb 21, 2006 7:44 am

hello , been busy with 2nd toy 90 851w/2k as new cond. question to group my 91 907ie has a shotgun like back fire upon getting of the gas, it will back fire several times...all fluids,belts,values,electrical checks,fuel filter,spark plugs have been changed adjusted and or replaced...it runs very strong and idles well...only issue is back fire...has euro chip,open staintunes and airbox mod., have appointment with local ducati dealer...any thoughts or suggestions :ugh:

Finnpaso · **Posted:** Tue Feb 21, 2006 1:14 pm

Have You done ALL needeed adjustments to INJECTION ????? :confused:

1564 · **Posted:** Tue Feb 21, 2006 2:35 pm

have not touched computer/fuel injection...will have duc dealer sort that out...any thoughts

Finnpaso · **Posted:** Tue Feb 21, 2006 3:16 pm

Most of that kind problems are connected to fuel/ignition system, thats why. Read close topic "problem with idling". U have changed/checked near all other possible things, so Injection should check next! Remember, that there are also "not so good" Ducati dealers, who cant find solution to problem, but surely they can take Your moneys easily....

Ps, Injection NEEDS, that Your battery is filled with current and it can also give it to system = Good battery and NOT clogged fuel filter are "MUST" in injected bikes !!! :thumbup:

DesmoDog · **Posted:** Tue Feb 21, 2006 9:41 pm

My guess is it's the exhaust and if you check for leaks at the muffler/pipe junction, you'll find one... if not there check at the crossover and then head. Wildcard guess - all of the little plugs are still in the pipes, right?

If the bike's backfiring through the intake you probably have an issue with the mixture. The "Euro chip" probably isn't enough to compensate for the modified airbox and mufflers - you really need an aftermarket chip to keep the bike from running lean. Too lean and you can burn valves...

Finnpaso · **Posted:** Wed Feb 22, 2006 12:51 pm

persempre907 · **Posted:** Wed Feb 22, 2006 9:09 pm

1564 · **Posted:** Wed Feb 22, 2006 10:43 pm

Rogero · **Posted:** Thu Feb 23, 2006 8:38 am

70 degrees and sunny eh?

Well in the UK it's 41 degrees (F) and a bitterly cold North Easterly is blowing down into South Wales.

Too cold for 907's today - I'll take the car.

Hope the problem is solved, mine is chipped and goes well with open pipes....

1564 · **Posted:** Thu Feb 23, 2006 2:39 pm

just for information the 907 has a fim chip and puts out 14v at 5000rpm , new fuel filter and is always hooked up to charger... :rant:

Finnpaso · **Posted:** Thu Feb 23, 2006 7:58 pm

Remember to check also COMPRESSION in both sylinders !!!! If its exhaust valve problem, then easy to check with compression test. :thumbup:

The_Duke · **Posted:** Sat Feb 25, 2006 10:54 am

1564 · **Posted:** Sat Feb 25, 2006 5:08 pm

1564 · **Posted:** Sun Feb 26, 2006 7:18 pm

DesmoDog · **Posted:** Sun Feb 26, 2006 7:37 pm

91 907ie back fire

Who is online