Fw: Having problems with 16v, Help!!!!!!!!!!!!!!!!!

[dcewing1 <dcewing1@cwix.com>]

Whenever you are diagnosing anything, you have to know what condition the
basics are in--Tune-up especially.  Although I would suspect that the Fuel
pump is dieing on you.  The resistance gets too high and makes the fuel pump
relay click like mad and get hot.  As far as the adjusting the air fuel
mixture/air flow meter, you need a gas analyzer to do it accurately or a
good DMM so you can check duty cycle.  If the air flow meter is adjusted
improperly though, it will mostly affect idle unless you idle the car alot
then it will carbon things up and possibly foul plugs.  A possibility for
the initial problem could be a stuck on cold start injector.  I had this
problem and I would have a hard time starting it, then it would run rough
and smoke until I cleared it out, then after a few seconds idling, it would
start to load up again.  So, Initially, I would check out the relay and fuel
pump--pressure and delivery.  Next I would replace worn tune-up parts or
verify that they are serviceable, then go into the fuel system diagnosis
from there.  When diagnosing anything, hit the basics first.  Then if it is
a cap, your not trying to test the computer or coil for a rough run problem.
HTH!!  LMK what happens!!

Dave
Master Tech
77 Rabbit 2.0L 16v


>Hey there,
>
>    Well, a few weeks back, my 88 16v Scirocco started blowing black smoke
>out the tail pipe.  It would do this whenever I would accelerate, and also
>whenever I would hit the gas after upshifting.  Anyway, a rather
knowledgable
>guy I consulted with told me that he suspected that I had a bad injector or
>two, maybe three.  He thought that maybe that the previous owner (I have
only
>had the car a month-and-a-half) didn't change the fuel filter often enough
>and probably got debris lodged into some injectors from the worn out
filter.
>Also, the car idled hella high, like at 2200rpms.  So he took his little
>allen wrench and adjusted the Co level screw in-between the fuel
distributor
>and the base of the intake hose on the airbox.  He adjusted it to where it
>has much better throttle response, but would not idle.  It also almost
ceased
>blowing the smoke.  I suspect that the plugs are also fouled, need to check
>them... no need to waste the $$ on plugs before correcting this fuel
problem
>or whatever problem it is.
>
>    Anyway, that was about 4 weeks ago.  Just this evening I was driving
>along, and being the pain in the ass that it is, every time I would come to
a
>stop, I would have to tap the gas with my foot and brake at the same time
or
>my car would die.  Then, my car would start to backfire every couple of
miles
>or so, and at one point when going up a minor incline the car
uncontrollably
>died.  Started right up again though still was running sluggishly.  My car
is
>running like a dog turd on wheels!!!!!  At any rate, this a whole afternoon
>while my car is doing this, I am noticing a desperate clicking sound,
>definetely coming from the relay panel.  Sure enough, after limping to my
>house, I feel under my dash and relay # 67 is scorching hot!!!  Any ideas?
>
>Thanx
>Ben
>88 16v Scirocco
>



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