Re: Thanks, and here's another question!

["Wm. Josiah Erikson" <josiah@gsinet.net>]

Maybe your cat is getting progressively more and more plugged up? Just a
thought.
    -Josiah

David Ruby wrote:

> Jonas, et al:
> Thanks for the imput regarding the oily airbox.  I am not freaking out any
> longer.
> Here's another tech poser for the list wrenchers extraordinaires:
> What causes misfires?  I know, it's either spark or fuel, but what's the
> most basic way to determine which? (Mine misfires indiscriminately at idle
> and throughout the rev range.  Yet I have a new fuel filter, injectors,
> injector seals, cap, rotor, spark plugs, spark plug wires, and coil, not to
> mention the hall-sender ECU.  I am puzzled, and the car gets rougher and
> rougher.  Occasionally, It'll give a huge buck or two, and occasionally,
> it'll stall when idling up to stop signs, etc..  Actually, I'm about to go
> postal on it, but I want to go Autocrossing next season, and a Nissan 4x4 is
> not the hot setup for that.)
> My Scirocca' runs like a piece of caca!
>
> TIA for advice (and extra credit to anyone who can recomend a good shop in
> the central Calif. area)
> -Dave
> '86 8v, possessed by the Devil?
>
> P.S. I hope I don't give the impression that my car is a piece of poo.  It
> just runs like one; it actually is one of the cleanest MK2's around.
>
> -----Original Message-----
> From: Jonas Karlsson <jkarlsso@metabolex.com>
> To: David Ruby <dbruby@ainet.com>; scirocco list <scirocco-l@scirocco.org>
> Date: Mittwoch, 18. November 1998 14:35
> Subject: RE: Oil in the air box
>
> David Ruby wrote:
> >Hello crew,
> >Seems like ther hasn't been enough tech questions lately, so >here's one
> for the gurus to munch on:
> >Working on my '86 8v today, installing extra ground wires >(yippee!), I
> decided to remove the rubber shell from atop the air >box (you know, the
> mass airflow thingy).  Anyway, I was surprised >to find oil in the strainer.
> Not alot, but enough to make me >worry.  The car has been running rich and
> crappy for as long as >I've had it, and nobody can figure out what the
> problem(s) >is/are.  >Questions:
> >1.) obviously, some of this oil is making its way into the >intake.  Is
> this partly to blame for drivability problems?
>
> I doubt it. The oil in this place is not uncommon. If anything the oil could
> impair the movements of the airflow sensor. This would not make it run rich
> ( I don't think so anyway) but behave sluggish. Like you step on the gas and
> it is slow to respond. But it doesn't sound like that is happening here. If
> you can lift it with some needlenose pliers, and movement is not hindered,
> it's OK.
>
> >2.) why is there a hose from the top of the valve cover to the >bottom of
> the airbox?  This seems to be the source of the oil.
>
> Right you are! The German Engineers (tm) thought this would be a good place
> for a breather hose.
>
> >3.) Is this indicative of an oil blow-by problem (bad valve >seats,
> perhaps, or ???)
>
> doubt it, there is supposed to be lots of oil in the cylinder head, that way
> the cam doesn't sieze up. =^) Bad valve seats or valve seals would cause oil
> to be sucked into the cylinders, burned, and come out as white smoke from
> the exhaust.
> >4.) Anything else?
>
> I wouldn't be concerned. But one way to deal with this is to buy an upper
> oil baffle. I'm sure one of the list vendors can get you one, if not then
> Techtonics has them for sure. Or you can go to a junkyard and find an A2
> (hydraulically liftered engine)and get it from there. Just remove the valve
> cover, and it's right there. This will block the oil from splashing up into
> the breather hose.
> >Cheers to anyone who can clear this up to any extent.
> >
> >-Dave
> >86 8v
> >
>
> Good luck.
>
> Jonas 85 Scirocco
>
> --
> To subscribe or unsubscribe, send email to scirocco-L-request@scirocco.org,
> with your request (subscribe, unsubscribe) in the BODY of the message.


--
To subscribe or unsubscribe, send email to scirocco-L-request@scirocco.org,
with your request (subscribe, unsubscribe) in the BODY of the message.