Vacuum Line sizes...

[bob terwilliger]

Thanks Huw,

--- Huw Powell <audi at humanspeakers.com> wrote:
 
> It can't hurt to look this stuff over then:
> 
> http://www.humanspeakers.com/audi/timing2.htm
> 
> http://www.humanspeakers.com/audi/tuning-cise.htm

Done but wanted to do the "easy" stuff first before I
dove headlong and ignorant into the guts of CIS..too
many things I could screw up..want to be methodical
and make sure everything else is operating correctly
first.

> 
> I would not recommend randomly replacing parts - you
> should try to diagnose the problem first.  Although,
doing something like the vac. lines can be good, since
they are very old.  I don't remember the sizes, 
> but a decent import parts place might be familiar
> enough.

I agree and I'm not in the habit of doing that but
these items needed to be replaced anyway.  I checked
the resistance of the temp sensors and they were shot.
 The O2 sensor is probably the original and has 20
years on it..so for the sake of CAN$40...I'll probably
save that in fuel in a month anyway.  As for the
decent import parts place, all around here give the
stunned "wtf" face when I say '86 Audi Coupe.
 
> You also have a lot of molded rubber bits to check,
> there's one with four ports by the intake manifold
that is prone to cracking (underneath, usually) with
age and wear.

The one holding the ISV?  Seemed fine when I cleaned
it and the ISV.  Was thinking of trying the
ether/propane test..never had to do it..adviseable or
not?

> You *definitely* should check the CIS fuse - it's
> the one in the side strip in the fusebox, and often
gets removed by people thinking it is a "spare."

Done.  #24 in what should have been #23 but #22 is
left blank for diesels according to Mr. Bentley.
 
"oil pressure gauge is pegged at 5bar even when hot
and not under load."
 
> Shorted or disconnected wire to the sender (on the
> port side of the block) perhaps?

Noticed this am that it pegs with the key in acc
position so likely electrical.


Maybe a long shot BUT the car is new to me and the
Bentley schematics are just that, schematic.  I do
have a weeping/leaking heater core and know that the
jetronic unit is somewhere in there as well...is it
possible that coolant got into the unit somehow?

Thanks,

John 

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