Date:         Wed, 20 Apr 2016 19:37:49 -1000
Reply-To:     "SDF ( aka ;jim lahey' - Scott )" <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "SDF ( aka ;jim lahey' - Scott )" <scottdaniel@TURBOVANS.COM>
Subject:      Re: Strange vacuum leaks 1.9
Comments: To: Spencer Allen <soxndubs1951@GMAIL.COM>
In-Reply-To:  <CAHtOfz8BNqxO3XRCzhxx6iCgZu-6DuE_Ra6p+9L6HUAJeS9NvQ@mail.gmail.com>
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True, the 1.9 uses a shorter crank pulley mounting bolt ( than the 2.1's
) and does not use a washer.

sounds to me like it's crankcase pressure that's emitting smoke,
as those areas are not under vacuum of course..
but pressurized from the crankcase.

I'd think a sharp tech would realize that.
And where did he introduce his smoke ?
or what is he smoking ?   lol.

I have found up to 10 tiny leaks in the plenum, intake runners, and
throttle body area.
Very common actually.
I find mine with a Listening Hose ..a hose held to the ear and just
'listen around.'
You hear a hiss ...or any sound ..that's a leak.

I also believe in the 'spray carb cleaner' method ..any change in idle
speed or quality ..there's a leak at that spot.

I have never tried the propane method ...just aim a small jet of propane
( like from an unlit propane torch ) ...I should one of these days though.

the listening method works quite well.

Scott



On 4/20/2016 4:07 PM, Spencer Allen wrote:
> A 85 Westy 1.9 with auto, a/c & power steering. Is it possible to have
> vacuum leaks at the base of ignition distributor and the crankshaft pulley
> bolt key way? My mechanic did a smoke test for leaks and found them at
> these areas. He also said the heavy washer that goes between bolt and
> pulley is missing. I thought on the 1.9 with a/c & ps the pulley bolt
> didn't have this washer. Anyone have experience with this kind of leak and
> the lack of washer? Thanks.
> Spencer
>