Mechanics

94 PASSPORT RUNNING ROUGH

1994 All Other Makes All Other Models

94 passport 3.2L V6. DIS, MPFI. 157k

Engine consumes TWICE the fuel it should.
Engine lacks power, runs rough under heavier acceleration and hills. Occasional black smoke.
OBDI code 44 (o2 sensor reads lean mix)
Lots of upper end chatter

Replaced fuel filter with minimal results.
Air filter is good. Next, I plan to check fuel pump and pressure regulator with a guage, unless that's a bad idea.

1. Is there a way to determine if the fuel injectors are clogged without removing them?
2. What is the probability that this is the problem?
3. Any other suggestions?
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Bigbaldtires
May 10, 2007.




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