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Re: [T3] 68 Emissions Nightmare

Subject: Re: [T3] 68 Emissions Nightmare

> On 6 Mar 2001, at 20:24, Marshall wrote:
> > The fuel pressure was up to 50 lbs and he brought it down to 26 lbs
> > is slightly under the specs.
> This was a HUGE change. How could it NOT have made a difference? Is
> it possible that your oil is heavily diluted with excess gas which is
> now contributing to the CO measurement. I would adjust the pressure
> to the correct 29 psi.

First thing I would do after having 50psi pressure, is to Change the oil,
and take the car out and work it up completely before taking another
emission check.

> > Can anyone offer some advice as to fixing this problem?  We are at our
> > wit's end over this.  He was suggesting perhaps the previous
> > owners put the wrong injectors in.  He was asking if I knew the
> > Millisecond ontime of the injectors.  I told him I would try to get that
> > info from the list (and any advice offered).
If I remember right, it is around 40-45ms on time depending on the
temperature of the engine.

> I have one measurement of the injector on time made years ago. I can
> dig it up if you really think it will help, but I have my doubts.
> Still I'm impressed that your mechanic thought to consider this and
> also that he thinks he has the equipment to measure it.
> There were 2 possible injectors for your 68, Bosch numbers ending in
> 001 (black plastic bodys) or 007 (yellow plastic bodies.) They should
> all be alike.
> I would make sure that all the other stuff is right first: timing,
> dwell, advance mechanisms, valve lash, idle speed. Then check
> compression and make sure that all the hoses are installed on both
> ends for the pressure sensor and the pressure switch.
> -

Russ Wolfe

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