did you inspect the distributor cap carefully ?

if you get a reverse pulse, like backfire in the intake ..
enough to pop off a hose..
that makes me think of something firing while an intake valve is open ..
the only way I can think of that happening is the distributor is massively
out of time..
or ignition is  going to the wrong place at the wrong time in the
distributor cap.

sounds to me like someone needs to get 'hands and eyes on'  about details
and components and adjustments on your engine.  Like testing and diagnosis.

Scott
----- Original Message -----
From: "Andree" <andreehurley@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, May 06, 2011 9:40 AM
Subject: Re: Won't start (tries) (coughs) (smokes)

> Well...yesterday I looked at the wires, tried to start it and had a big
> burp of
> smoke come out of the back of the AFM (I think) - dislodging the hose....
>
> Andree
>
>
>
>
>
> ________________________________
> From: Rob <becida@COMCAST.NET>
> To: vanagon@GERRY.VANAGON.COM
> Sent: Tue, May 3, 2011 12:00:53 PM
> Subject: Re: Won't start (tries) (coughs)
>
> Make sure the temp2 is plugged in & the connector/wires are in good
> shape. If they are I'd change the temp2 sensor.
> A LOT of the won't start when hot or cold issues come back to that
> inexpensive little sensor.
>
> Rob
> becida@comcast.net
>
>
> At  5/3/2011 09:14 AM,Andree wrote:
>>My van has had an early morning issue - quite different from the hot
>>start issue
>>it was having.
>>
>>It tries to turn over, then coughs and dies. It's been running rough in
>>the
>>morning until it warms up, but now it just won't start.
>>
>>
>>If you keep the key turned, it goes in cycles (if  that makes any sense).
>>
>>Any ideas? We tried jumping, just for the heck of it. It has gas.
>>
>>It's a 1985.
>>
>>Thanks,
>>
>>Andree