[200q20v] Hard starting, poor mileage, and running rich...
rbwinchell at yahoo.com
Tue Feb 20 08:44:44 EST 2001
I have the same hard start followed by the smell of
gas, but not the bad mileage.
Try this: run the car for a bit, then let it sit for
1/2 hour or so. Pull the plugs and see if you can
see/smell gas in the top of the cylinders. This should
tell you if an injector(s) are leaking.
--- Peter Schulz <peschulz at cisco.com> wrote:
> Quiz for the brain trust...
> The Uhvant is getting poor mileage 12-13 city, 17
> highway...Car has the
> Hoppen chipset, and is usually run on 93 octane,
> occasionally 89 in the
> winter only.
> Starting tends to require a long cranking period,
> followed by the smell of
> gas. Chris Miller and I did the once over this past
> weekend. I tried to
> check for codes (and assumed that there would be
> codes) but received
> a 4444. Pulled all the plugs ( the F5 Platinums)
> found alot of carbon on
> the tips - scraped the carbon off, and some oil on
> the lower part of the
> plugs in cylinders 2 & 3. Spark plug insulators and
> wire boots were dry
> and clean, and the pugs were tight for the most
> Items replaced in the past year include the plugs,
> wires, cap, rotor
> (correct 3B part), crankcase vent hose, WGFV, hose
> to same from the ISV,
> MFTS, afterrun sensor and relay, O2 sensor.
> Michelin man and IC hose
> appear to be sound.
> I'm assuming? that the rich condition is either due
> to unmetered air (will
> replace all old vacuum lines), fouled injectors or
> leaking injector seals,
> or possibly a bad o2 sensor ( I will check and
> replace if necessary).
> Mileage on the drive home from Chris' improved
> dramatically ( after
> cleaning plugs).
> Any advice from the collective brain trust before I
> start pulling injectors?
> Peter Schulz
> 1990 CQ
> 1991 200 20v TQW
> Chelmsford, MA USA
> peschulz at cisco.com
> 200q20v mailing list
> 200q20v at audifans.com
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