clear signs of a vacuum leak

Higginbotham, David A. wrote:

>We have an 82 westy, aircooled 2.0L, stock engine. The engine starts
>fine and idles OK for a few minutes and then the idle slows down and
>then revs back up and then slows down, until it dies with a hard
>shutter. I have tried adjusting the idle screw, no change. I have
>replaced the temp sensor. If I hold the accelerator down to make a fast
>idle it stays running no problem but this is a PITA as I decelerate to
>stop at a light. What should I check next.
>
>Thanks,
>
>David Higginbotham
>82 Westfalia
>Silk Hope, NC
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