On 1/21/05 9:10 AM, "Damon Campbell" <damoncampbellvw@yahoo.com> wrote:

> Hello Jim,
> 
> Could you elaborate a little bit?  What is the best
> way to check for a vacuum leak?  Was flowing propane
> around the engine bay not a good way to do it?
> 
> Secondly, what do you mean by "AFM response".  When
> looking at the digitool, it does seem "normal".  No
> obvious gaps or things like that.
> 
> Thanks,
> -Damon
> 
Check any boots or rubber fittings for cracks or air gaps from the
aircleaner on up to the intake manifold and then the hoses around the top of
the engine.  The plate in the Air Flow sensor or MAF needs to be checked to
make sure it is not sticking.  Open up the line from the air cleaner and see
if it moves freely with light pressure and not sticking.

When you first step on the gas the initial vacuum suction may be pulling a
crack open and as pressure evens out it reseals or with vibration reopens
again causing air leaks in the system and a very lean burn.

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jimt
Planned insanity is best.
Remember that sanity is optional.
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