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Carby Backfire 

 

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 Post subject: Carby Backfire
Posted: Mon Nov 28, 2011 9:59 pm 
Stock as a Rock
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Ride: EB Ghia

Location: Ballarat
VIC, Australia

Hey all, I got an 302 XC.
The other night I was driving along perfectly until it started f@rt around heaps.
Now when I start it there is constant intake backfire especially when revving it a bit. It's virtually undriveable.
It's got a new dissy, plugs and leads.
Could it be a dropped valve or anything? Any ideas?
Cheers Dan.
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 Post subject: Re: Carby Backfire
Posted: Mon Nov 28, 2011 10:54 pm 
Getting Side Ways
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slammeb wrote:

It's got a new dissy


timing is out.

 

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 Post subject: Re: Carby Backfire
Posted: Mon Nov 28, 2011 11:11 pm 
Getting Side Ways
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Benny D wrote:
slammeb wrote:

It's got a new dissy


timing is out.

+1
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 Post subject: Re: Carby Backfire
Posted: Tue Nov 29, 2011 5:50 pm 
Stock as a Rock
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Age: 29

Posts: 145

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Ride: EB Ghia

Location: Ballarat
VIC, Australia

Yeah but it's been in for ages and running fine. It happened after I stopped and started it again 10 mins later.
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 Post subject: Re: Carby Backfire
Posted: Tue Nov 29, 2011 6:08 pm 
Stock as a Rock
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Age: 51

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Joined: 25th Dec 2010

Ride: 1995 EF Falcon

Location: Adelaide
SA, Australia

Timings out.. dodgy rocker..
you running a Holley? check the adjustment on the pump or see if theres a tear in the diaphragm or trash has got caught in it.
shot in the dark is the coil.

 

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 Post subject: Re: Carby Backfire
Posted: Thu Dec 01, 2011 3:28 pm 
EFI Guru
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Age: 52

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Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

What sort of new dizzy? Cheap chinese s**t?
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 Post subject: Re: Carby Backfire
Posted: Thu Dec 01, 2011 3:44 pm 
Getting Side Ways
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Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

probably the timings out, it creates the backfire through the carb/intake manifold for newer cars
definatly check that first then come back to us,

 

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 Post subject: Re: Carby Backfire
Posted: Thu Dec 01, 2011 5:37 pm 
EFI Guru
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Age: 52

Posts: 4289

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Ash wrote:
XR9UTE wrote:
What sort of new dizzy? Cheap chinese s**t?


That's what I was going to say. $10 says it is.


Oh yeah msd is s**t too.
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 Post subject: Re: Carby Backfire
Posted: Thu Dec 01, 2011 11:59 pm 
EFI Guru
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Age: 52

Posts: 4289

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Yep, get an original Bosch job and rebuild it or get a Ford Duraspark.
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 Post subject: Re: Carby Backfire
Posted: Sun Dec 11, 2011 7:10 pm 
Stock as a Rock
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Age: 29

Posts: 145

Joined: 24th May 2010

Gallery: 3 images

Ride: EB Ghia

Location: Ballarat
VIC, Australia

Thanks for info guys I took it all into account.
It turned out it was a dropped valve so my spare 351 will be going in this week as It's better anyway.
Thanks guys.
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