86 CGT tapping engine

[Sam Letzring]

I too removed the vacuum rod from my 86 4KCSQ- no difference in braking-
slower response on diff. locks. I live at 7500 ft. drive over a 10Kft pass
twice a day- no problems.

Sam


----- Original Message -----
From: "Ed Kellock" <ekellock at gmail.com>
To: "Audifans" <quattro at audifans.com>
Sent: Wednesday, February 16, 2005 9:03 AM
Subject: Re: 86 CGT tapping engine


> It could be two things: dry lifters or the actuation rod for the
> vacuum pump.
>
> In the past, I have been able to reliably eliminate noisy cold lifters
> by using Mobil 1 15W50 or equivalent.  I tried Marvel Mystery Oil and
> ATF to supposedly clean the lifters, but without the right oil, they
> were always noisy at startup.  And if I flogged the car, they could
> also get noisy even when warm, and way worse if shut down soon after a
> flogging session.  The next cold start was almost painful.  With a
> good, not-too-thin synthetic, I never had these problems again.  Your
> experience may vary, but that's mine in regard to lifters.
>
> The vacuump pump rod is a different story.  Mine now resides in the
> glove compartment.  None of the above would eliminate the rod tapping.
> So I removed it.  I live at 6000 feet now and 8500 feet then and
> noticed no affect on brake assist.  Again, your experience may vary if
> altitude is a factor for you, so just be aware if you go this route.
>
> Ed
>
> ----- Original Message -----
> From: "Mark Donohoe" <mdonohoe at axcessisp.net>
> To: "Audifans" <quattro at audifans.com>
> Sent: Wednesday, February 16, 2005 7:56 AM
> Subject: 86 CGT tapping engine
>
>
> > After completing the timing belt job, I started the engine to see
> how it
> > sounded.  The engine will tap for 15-20 minutes while sitting in the
> > garage before it quietens.  Do you think this is lifter noise and
> what
> > might be the cause?  Some backgound info about this car:  116,000
> miles,
> > sat in a guy's driveway for years, rarely being driven.  Could there
> be
> > something wrong with the oil pump?  When the tapping stops, it
> sounds
> > great.  Any ideas here?
> >
> > Mark Donohoe
> >
> >
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