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Driver's side, behind plastic pannel.

(1990 Ford Ranger)
in El Paso, TX on July 26, 2017
Engine starts fine, under load it bogs and hesitates.when heavy acceleration, engine missfires. Spark plugs get carbon fouled.
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Popular Answer
on July 26, 2017
Hello,
Which engine do you have. I don't think the ranger had TFI before 1991, and I need to know if your vehicle uses vacuum advance.
I think you may have a timing issue, restrictive intake, restrictive exhaust, or the engine control system is running you rich.
on July 26, 2017
Hello Casey, It's a 1989 with whith a 2.9 engine . I accelerates poorly under load. And no vaccum advance. Thanx.
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