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Backfire into airbox 

 

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 Post subject: Backfire into airbox
Posted: Tue Oct 02, 2007 4:09 pm 
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every now and then when you plant it it backfires into the arbox, it dont do it all the time just every now and then, wat could be making it do this ?.

do you think its bad fuel or plugs and leads. i just installed a new airfilter, the plugs and leads are as they were when i got the car.

it only started doing this coming back from the Big reds car show in penrith the other weekend.

 

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Last edited by BuNtEr on Tue Oct 02, 2007 4:11 pm, edited 1 time in total.

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Posted: Tue Oct 02, 2007 4:10 pm 
Getting Side Ways
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TIMING???

 

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Posted: Wed Oct 03, 2007 1:36 am 
Getting Side Ways
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Can be low - sh fuel pressure... Does it happen when you first open throttle ???
Also check that EGR is working as it should???
Air leaks between maf and engine can to this also...
Unmetered air...
Check plugs & leads ..
Clean maf...

 

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Posted: Wed Oct 03, 2007 2:33 pm 
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Age: 50

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Gallery: 10 images

Ride: Falcon

Power: 113 rwkw

Location: your mums
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EBXR8380 wrote:
Can be low - sh fuel pressure... Does it happen when you first open throttle ???
Also check that EGR is working as it should???
Air leaks between maf and engine can to this also...
Unmetered air...
Check plugs & leads ..
Clean maf...


it hasnt done it all the time its only done it twice, my car dont get driven every day lucky if its driven twice a month.

 

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Posted: Wed Jan 02, 2008 8:12 pm 
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Ride: EAII Falcon S

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i hope someone does a doco about backfire through the inlet manifold someday cos even tho i dont understand why, our EB was doing the same thing and even tho it didnt happen all the time it was still annoying. just touching the excellerator sometimes would cause detonation. i tried everything from new vacuum hoses, new spark plugs, new distributor cap, new rotor key, changed the air filter, timing check (perfect), air fuel ratio (perfect), even a new coil. but in the end just replacing with 9mm plug leads made it run like a new car.

like i said i dont understand why, cos both valves are closed between compression, spark and combustion but it still happened. lol :lol:

 

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