Back Fire at High RBM !!

[Sayed_000]

is it normal to back fire at high RBM's ??


normally my car do it in the 1 and 2nd Gears with more than 5000 RBM

is that normal ?

[pajeff02]

No... that is not normal. A backfire can be indicative of a lean condition caused by a vacuum leak, clogged injectors, or a dirty fuel filter. Start with the basics: Any codes being set? Check your fuel pressure. Check underhood for any cracked or broken vacuum lines that would allow unmetered air to enter the engine and result in a lean A/F. Fix the problem before you cause damage by driving the car. There are other possibilities, but I would start with the above.

[blade2222]

look for exhaust leaks they can cause backfiring also.

[Sayed_000]

thanks for the help

my fuel filter has less than 1000k so i better go clean up my injectors ..

had a problem with code p300 random misfire back a while and some told me its my plugs so i ordered a new tr55 set waiting for them to arrive

and i'll see ...

[Redphoenix1998]

a P0300 will cause your backfiring. Plugs and wires is a good place to start but it also be caused by a dirty MAF, vacuum leak, etc. Also run some injector cleaner through to be on the safe side

[Sayed_000]

just bought new plugs .. gonna clean the injectors as well ..

thanks guys