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Running lean need some help/ported and polished the head 200 1988

posted by  poolman on  Wed Apr 20 03:23 CST 2005
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last visit: Sun Dec 26 02:03 CST 2010
[RELATED]

Have you checked the vacuum with a vacuum gauge, do you know what the vacuum was befor the work you did. With the higher lift cam and smoothing out of the intake passages you may have caused a higher flow of air to enter the system. I'm not sure the injectors from a turbo would help as much as an ecu from one.
The 02 sensor might be the culprit as listed in the last post and indeed would be a good starting point, also check the vacuum going to the fuel pressure regulator, if your not getting vacuum there it may cause a lean condition as well.
Th 02 sensor should react to a lean condition and give the info to the ecu to give more fuel , how long since it was changed last.
Hope that helps
Poolman






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