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Re: [T3] Diagnostic help: Loud popping...Àvalve problems?


<x-charset iso-8859-1>I've been phone conferencing w/Brian Fye and he's been keeping me
level-headed.  Yes, what you describe is happening (KA-POW outta the
exhaust) and your suggestions are the same as Brian's.  There were
itty-bitty pieces of ??? (gasket material?) that I blew out w/compressed air
and wiped away in the carbs and jets.  Turns out my main's are too small
(will correct once I get my larger exhaust).  Until I get the carbs back
together I can't test the exhaust header for leaks but, big air pump + stock
diameter piping = blown gasket probably.  An oops for me, since the exhaust
is temporary until I get the new system I reused the old gaskets...the kind
that are metal and can only be used once...let's hope this is the problem :)
Thanks for the good vibes!
-- 
     Toby Erkson
     air_cooled_nut@pobox.com
     '72 VW Squareback, '95 VW Jetta, '81 Gold Wing
     http://www.icbm.org/

...
> Is the car really backfiring? You know the really LOUD
> backfire...KER-POW.  Is is out the exhaust or the carbs? or both?
>
> Can you crank over the car with the starter (not start it) and listen for
>  any unwanted noises? If there are no unwanted noises then the problem
> would  have to lie with the actual suck/squish/boom/blow
>
> 1. Did you blow out an exhaust gasket?
> 2. Break the exhaust in some fashion, broken weld etc.
> 3. Somthing stuck in the carbs blocking a jet? Lean cylinder?
> 4. Cracked valve seat or burned exh valve + leaky exhaust?
>



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