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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 which
> 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.

> 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).

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.

-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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