My 84 backfired occasionally on deceleration when I first got it. There were
exhaust leaks everywhere with the worst at the union. Replacing the O2
sensor and getting a better seal at the union reduced the backfiring
considerably. Since then I have tightened up the other leaks due to stripped
studs and the backfiring has disappeared.

----- Original Message -----
From: "Hans Vanhethoen" <hvhus@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, November 25, 2003 5:56 AM
Subject: Re: Timing how to.

> I would check real good for exhaust leaks first as my 84 does backfire
> because I have big holes in my exhaust now and am replacing in the near
> future, I might make mine out of stainless or mild steel sometime this
> winter when I have time. Good luck.
>