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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 ******************************* ------------------------------------------------------------------- Pitch in! Send your pledge of support! mailto:support@vwtype3.org