1984 F 150

Asked by Dec 23, 2015 at 07:36 PM about the 1984 Ford F-150 XL Standard Cab SB

Question type: Maintenance & Repair

I have a significant loss of power, coupled with what
almost seems like a misfire after it runs for a while.  
Starts somewhat slower than it was, but idles fine
till it gets warmed up. As soon as you drive it a few
minutes it idles rough, slows down and will
ultimately stall even if I flutter the accelerator. Took
apart carb and cleaned it, doesn't appear to have
any issue there. Replaced plugs recently but not
wires and ran fine until lately ( at least a couple
thousand miles) timing doesn't seem off, help!

2 Answers

4,825

Could be a plugged catalytic converter. Has it ever been changed? With a plugged converter, the exhaust cannot flow freely and tends to choke the engine not allowing it to build power.

1 of 1 people found this helpful.
18,850

Check the condition of the plugs and wires. The engine could be missing at idle, but you just do not notice.

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