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Re: Crappy fuel mileage,surging and lag 700 1985

posted by  someone claiming to be steve mahnken on  Fri Jan 19 12:15 CST 2001 [RELATED]

I've got the same problem(s). I've got lots of new stuff on the engine (too much to list but it does include the hall sensor, temp.sen. and fuel pressure reg.) The only FI componants I haven't changed are the ECU and the O2 sensor. The O2 sensor checks good. I got some relief from an oil treatment of Marvins Miracle oil and subsequent oil change. I got 1 additional MPG on the first tank and I'm on the 2nd tank now. Seems to be better than the 1st. One strange thing is that people either report MPG of 17 or 20-21, nothing in between (mines been running 17 for awhile). This almost seems too common not to have a common cause.





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