I think the vac pump and the oil pump are driven by the same shaft
so they may not be spining at first start up. the timing  belt may be oil
soaked does the intermediate shaft pulley run off the smooth side of the
belt ?
me thinks it does time to pull the timing cover off
Bob
----- Original Message -----
From: "Jaap Nauta" <bus.mail@IAE.NL>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, July 08, 2005 11:01 AM
Subject: slow pressure buildup [diesel]

> Although my diesel runs fine for some years, there is one thing that
> keepsing me, and I wasn't able to find any info on it.
> After starting the engine, it take regularly quit some time to build up
> oil
> pressure. Sometimes the light goes off immediatly, sometimes more than
> half
> a minute before it goes off. Outside temp does not matter, nor does oil
> level.
> I never have problems once it's running.
> The weird thing is that the brakes don't have vacuum as long as the light
> is
> flashing. Then suddenly there is a slight change in sound from the engine,
> the light goes off and vacuum comes up.
>
> What I do is always wait for the light to go off, sometimes reving a bit
> higher
> helps.
>
> Any thoughts on what could be the cause? I was thinking the oil-pump, but
> that
> doesn't explain the vacuum
>
> Thanks
> Jaap
> 1987 Caravelle Diesel
>
>
>
> --
> The information contained in this communication and any attachments is
> confidential and may be privileged, and is for the sole use of the
> intended recipient(s). Any unauthorized review, use, disclosure or
> distribution is prohibited. If you are not the intended recipient, please
> notify the sender immediately by replying to this message and destroy all
> copies of this message and any attachments. ASML is neither liable for the
> proper and complete transmission of the information contained in this
> communication, nor for any delay in its receipt.
>