[V8] 4 cylinder V8

[dsaad at icehouse.net]

Yes - the rotor can just fail. (cap too) You can probably measure resistance
from the shaft to the rotor contact if it has failed - but not definately. If
you see black lines on the cap or rotor you may have carbon tracing - which
shorts out the spark. Check the coil tower for this condition too.

There is a $5 rotor out there that works just fine. It is a standard part for a
early 90's VW. Sorry I can't provide a part number but if you find one that
physically fits and has an internal resistance the same as the old one you are
good to go. I think the resistance is 4K ohms.

I have also found that the V8 ignition needs a good clean plug or it mis-fires.
I have never seen a motor so picky about plugs. Be sure they are good and clean
and properly gapped.

Why did the cap crack? Have you had the tie rods replaced? If they are installed
wrong they will break the caps off.


Dave

Quoting Rex Pedersen <fega at fega.com>:

> Hi Mike,
> The rotors are glued on and don't have a new one. That's my next plan but
> the rotor "looks" good. Nobody has them in stock around here and I have a
> feeling that still might not be the cure.
> Rex
> ----- Original Message -----
> From: "Michael Larosa Jr" <Mc.Larosa at Sun.COM>
> To: <Mc.Larosa at Sun.COM>
> Cc: "Rex Pedersen" <fega at fega.com>; <v8 at audifans.com>
> Sent: Friday, December 10, 2004 9:49 AM
> Subject: Re: [V8] 4 cylinder V8
>
>
> > wopps just read your post again, already done plugs... swap the rotors ?
> or are
> > they glued on ?
> >
> >
> >
> > Michael Larosa Jr wrote:
> > > have had the same issues.....  had to clean up all the plugs,
> > > then it fired right up...
> > >
> > >
> > > Michael Larosa Jr wrote:
> > >
> > >>fouled plugs on the previous 4 dead cylinders ?
> > >>
> > >>
> > >>
> > >>Rex Pedersen wrote:
> > >>
> > >>
> > >>>Hello folks,
> > >>>
> > >>>Been "off" the list for some time for many reasons but have just got
> back.
> > >>>
> > >>>My problem is with a friends 90 V8Q. It all of a sudden started running
> terrible. She took it to the dealer and they gave her a quote of $3800.00
> for basicly a tune up. It consisted of new plug wires, distributors and
> spark plugs. They said the right distributor cap was bad. Needless to say,
> she opted NOT to go that way and brought it to me.
> > >>>
> > >>>What I found was the right distributor wasn't firing. I found the cap
> was broke. (not sure if the dealer did this or if it just broke). I replaced
> the cap, spark plugs and cleaned the rotor but this bank is still dead. I am
> getting a spark but not sure it is hot enough. I swapped the coils and coil
> wires from side to side and still no luck. I pulled the codes and get no
> errors.
> > >>>The rotor looks good but can it "just go bad"?
> > >>>
> > >>>Any ideas out there???
> > >>>
> > >>>Thanks,
> > >>>
> > >>>Rex Pedersen
> > >>>_______________________________________________
> > >>>Audifans V8 mailing list
> > >>>Send posts to: mailto:V8 at audifans.com
> > >>>Manage your list connection:
> http://www.audifans.com/mailman/listinfo/v8
> > >>>Have an Audi V8 question?  Check the Audifans Knowledgebase!
> > >>>http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/V8
> > >>>Have a V8 answer? ... Please help others by adding to the KB ... all
> contributions welcome!
> > >>
> > >>
> > >
> >
> > --
> >
> >     _/_/_/  _/    _/  _/     _/      Mike LaRosa
> >    _/      _/    _/  _/_/   _/       TSE - HAS
> >   _/_/_/  _/    _/  _/  _/ _/        1617 Southwood Drive
> >      _/  _/    _/  _/   _/_/         Nashua, NH 03063
> > _/_/_/   _/_/_/   _/     _/
> >   S U N                              Phone: 781/442-1250
> >   S E R V I C E S                    Fax: 781/442-5488
> >                                      Email:mc.larosa at sun.com
> >
> >
>
>
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