Re: re. Wanted: Decel Fuel Cutoff Valve

[JShadzi at aol.com]

>
>Speaking of .. I'd sure like to know how to determine if mine is good or
>bad.  Do these go bad?
>

Yes, if they do it means they stay open when they're not supposed to, which will cause the car to die as soon as its reved once started.

>I enquired of this a little while back.  I took the less expensive "try it"
>route first, and replaced the Oxy sensor.  Wouldn't you know, my fuel
>consumption got worse.

Maybe you need to tweak your CO?  Don't know, that's where I'd start, if you haven't already.

>
>I still get a little popping on deceleration, mostly when I just get of the
>gas (throttle shuts).  Problem existed prior to performing major overhaul
>with the new turbo, manifold, bypass, etc.
>

Hmm, well, when the car is idling, the valve should be closed, when you rev it past 1200rpm, the valve will open.  Maybe its not opening and you're not getting any Decel fuel shot off?

>I hate to replace things, only to find I wasted my time and money.  The car
>runs fairly well now, but I am still annoyed by the long cold startup
>(about 5-7 seconds of cranking)  and the deceleration exhaust popping ( not
>a backfire).

Its a pretty easy test to determine whether good or bad.

HTH,
Javad