[T3] engine backfiring

[BilDylJ at aol.com]

Thanks Guys !! 
I'll check it out.
I thought it might be a problem with an injector.
I ordered 2 sets of injectors seals today.
I'll try that 1st. I don't think the injectors are bad.
The engine runs strong when your accelerating.
                                               Thanks Again.
                                                          Bill Doyle   
 
 



In a message dated 5/21/2012 7:17:10 A.M. Eastern Daylight Time,  
dave at hallvw.clara.co.uk writes:

Mine  backfired with flame(!) occasionally after I put in a NOS injector.
After a  week or two it stopped doing it - I figured the internal seals may
have  shrunk and were leaking a bit of gas, and had swollen up to  seal
better.  You may find yours cures itself now, having been in use  for a
while.

Dave.
UK VW Type 3&4  Club
===================

-----Original Message-----
From:  type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]  On Behalf Of Jim Adney
Sent: 21 May 2012 02:02
To:  type3 at vwtype3.org
Subject: Re: [T3] engine backfiring

On 19 May 2012  at 19:02, BilDylJ at aol.com wrote:

>   I have a old home  built trike with a 1972 type 3 fuel injected  
> engine with manual  trans. The Trike ran good for about 2 yrs. Buy I 
> had to  store  it covered over outside for a month and when I got back, 
> It would  not  start. I got it started but now the engine is 
> backfiring.  It seams to run  good when you are heavy on the throttle 
> but  when you hold it at a steady speed,  like 30 mph and just give it  
> enough fuel to hold that speed the engine will backfire  continually,
always from the same side muffler.

1) Check the hose  from the intake air distributor to the pressure sensor. 
If
it has fallen  off, it will act like this.

2) Get a copy of the Bentley Type 3 service  manual. That's the ONLY place I
know of that will give you the right tuneup  proceedure for the '72. It's a
PITA, and different from all the other  years.

--
*******************************
Jim Adney,  jadney at vwtype3.org
Madison, Wisconsin,  USA
*******************************

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