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stubborn rieger / engine problems



It sounds like a fuel system problem.  My suggestion
is to change your fuel filter and maybe add some fuel
injector cleaner into your gas to clear them a bit. 
If that doesnt' clear it, then you've at least done
some good maintenance, but i do think that is whats
wrong here.  It seems you're fuel system might be
backed up.

Isidro Lepez
1985 silver 8v
aka "la cucaracha"





--- Allyn <amalventano1@comcast.net> wrote:
> My string of good luck has ended.
> Problem: (noticed increased random missing when hot
> at idle over past few weeks). Car ran fine, then
> sputtered under acceleration (as if one cylinder
> wasnt firing). During this minute it only missed
> under load (revs freely when not loaded, no misses).
> After ~1 minute the sputtering went away but
> there was a noticable (not major) loss of power
> under load. The loss of power doesnt seem to be from
> any one cylinder. Car is still drivable. Revs freely
> as it ever did with no misses. The next time i
> drove it, i had the same power loss, but noticed a
> sputtering that occurs only when coming off the
> throttle (under load). No sputtering occurs under
> acceleration, only the slight power loss. Engine
> coasts down cleanly when off of pedal (no
> sputtering). The sputter only occurs under partial
> throttle and especially when coming off of full
> throttle. Still no stuttering while free reving.
> 
> What was done so far:
> Change plugs: no effect (old plugs were clean, all 4
> looked identical, no sign of plugs being
> cause).
> Remove/inspect plug wires: (neuspeed wires), all
> wires had consistent resistance, even with wires
> wet.
> Swapped coil with another one: no effect, same exact
> symptoms.
> Checked ignition timing: Dead on, no adjustment
> necessary.
> Checked cam timing: dead on.
> *at this point i let the engine idle up to
> temperature and noted no missing at all, i can only
> assume the missing problem was corrected and is not
> related to the sputtering problem*
> 
> Please let me know any opinions/thoughts. My hunch
> is possibly something fuel related or perhaps
> something funky with the coil driver.
> 
> Allyn Malventano, ETC(SS), USN
> 87 Rieger GTO Scirocco 16v (daily driver, 170k,
> rocco #6)
> 86 Kamei Twin 16V Turbo Scirocco GTX ('it has
> begun', rocco #7)
> 87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0
> rattles, original clutch, driveshafts, wheels :)
> 
> 
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l


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