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What can cause a back fire in the induction pipe? 

 

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SIM
 Post subject: What can cause a back fire in the induction pipe?
Posted: Mon Aug 07, 2006 7:59 pm 
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I'm having some back fire proplems guys leads are fine, replaced plugs today and oxy sensor....

can anyone help?

 

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SIM
Posted: Mon Aug 07, 2006 9:21 pm 
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ok ok ill give use something to work on... I think its my streched timing chain from NOS, thats possible to make it run like she is?

 

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balizticbobo
Posted: Mon Aug 07, 2006 9:50 pm 
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how old are the leads?
sounds like an ignition related problem...
My Eb does this when its cold...
Not sure what the hell it is...

 

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balizticbobo
Posted: Mon Aug 07, 2006 9:56 pm 
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lean mixtures...
could be faulty inlet air temp sensor, engine temp sender, cracked or loose map sensor hose, crook map sensor. Or a TPS in need of adjustment. or replacement...

 

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mic_77
Posted: Mon Aug 07, 2006 10:22 pm 
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Has the inlet manifold been off recently by any chance.


cheers Mic
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TaraHymen
Posted: Mon Aug 07, 2006 11:08 pm 
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what balizticbobo said

 

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SIM
Posted: Mon Aug 07, 2006 11:57 pm 
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balizticbobo wrote:
how old are the leads?
sounds like an ignition related problem...
My Eb does this when its cold...
Not sure what the hell it is...


leads have done about 60 tho.. i know what ya mean about doing it when its cold mine used to only do when it was cold but now its mostly when ya give it a bit off the line...

Oh yeah nah intake hasnt been off. Rebuilt about 60,000 ago

 

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SIM
Posted: Tue Aug 08, 2006 2:37 am 
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it ran low on fuel on the w/e... couldnt be a fuel filter could it?

 

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SVO XR6
Posted: Tue Aug 08, 2006 11:05 am 
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haha, maby coz its on NOS
:roll:

even a leaky injector could be the prob

 

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SIM
Posted: Tue Aug 08, 2006 12:58 pm 
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Yeah you should see the kind of back fire i get when theres nos in the system.... :)

And i know where u werk SVO.... How the hell did u get that job your not like 70

 

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SIM
Posted: Tue Aug 08, 2006 5:55 pm 
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Found this when changing leads anyone know what it was?

I checked the spark with timing light on all leads and 4, 5, 6 are all difrent.. there slower or something

 

 

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SIM
Posted: Tue Aug 08, 2006 6:15 pm 
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Ok so its the Knock Sensor, had a look in the book..

 

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Posted: Tue Aug 08, 2006 6:23 pm 
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SIM wrote:
Found this when changing leads anyone know what it was?

I checked the spark with timing light on all leads and 4, 5, 6 are all difrent.. there slower or something


Yeah, cyl 1 2 and 3 are in one bank.... 4 5 and 6 are in the other bank IIRC. They are fired at different times, so dont freak out.

Lol - never seen someone use a timing light to check spark on individual cylinders! Most ppl i know run the spark through a screwdriver and end up zapping themselves lol. Nice work!

 

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dvyvan
Posted: Tue Aug 08, 2006 7:45 pm 
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is it on gas?

 

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AdamN
Posted: Tue Aug 08, 2006 7:48 pm 
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dvyvan wrote:
is it on gas?


nope. petrol .. and nos :P

he's still having this problem :\
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