Mechanics

PLYMOUTH DUSTER ENGINE PROBLEM

1974 Plymouth Duster

Engine Performance problem
1974 Plymouth Duster V8 Two Wheel Drive Automatic 72,600 miles

I have a 74 duster mopar 318 with a holley 4 barrel carb, headers, edelbrock manifold and the engine has a slight miss in it when I give it gas, I have put new spark plugs and new accel high temp plug wires on it, new distributor, rotor and cap and it stills has this lil miss, what could it be?
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Dthurn01
June 1, 2009.



Hi. My Guess, it`s in the Carb ! Bepending on what type of Carb You have- It`s either the POWER VALVE or Bad Accelerator Pump. Check those out & Let Me know what You find out. Have a Good One, Dave

Tiny
Wolf1961
Jun 18, 2009.
Thank you for your advise, yes the carb was out of tune, I readjusted it and it seems to be running fine now. The plug wires were fine, the carb was running too lean. Its a 600 cfm Holly carb, I also advanced the timing a lil

Tiny
Dthurn01
Jun 19, 2009.
Hey, Glad to hear that ! Keep that good `ole MOPAR Running.I finally got Mine Fired up Yesterday ! Have a Good One, Dave

Tiny
Wolf1961
Jun 19, 2009.