Mechanics

BACK FIRE, WANT IDLE, 86

1986 Isuzu Trooper • 4 cylinder 4WD Manual • 155,000 miles

86 trooper, 4x4, will not idle, backfires when letting off the gas, replaced wires, cap, button and plugs, run 1 can of carb cleaner through carb, added seaform and always us high test gas. Parts store said this model does not have a tps sensor, and ideas.
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Harry wilson
November 29, 2010.



Did you check for vacuum leakages?
Are the cylinder compressions within specs?
Is the slow cut solenoid working correctly?
Have you cleaned the idling circuit?

KHLow2008
Nov 30, 2010.