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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

variable idle

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Old Oct 6, 2007 | 04:31 PM
  #1  
aypaintbody's Avatar
aypaintbody
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variable idle

i've got an 81 f150 with a 302, c6. It has a high rise intake, cam, headers, and a holley 650 carb.

when i have the pcv disconnected and the port on the carb plugged it will idle fine, but when i hook the pcv up, it will idle fine for a min, then it will jump 200-500 rpm, and eventually it will calm back down, i dont know why its doing that, i've looked for vaccume leaks elsewhere but i cant find any....

would the leak be comming from inside the carb...?

thanks
aaron
 
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Old Oct 7, 2007 | 12:17 PM
  #2  
blue beast's Avatar
blue beast
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From: sunny fla sometimes windy
Does the pcv rattle when you shake it? if not clean it with some carb cleaner!!
 
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Old Oct 12, 2007 | 05:15 AM
  #3  
Chiefrider007's Avatar
Chiefrider007
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From: Southern IL
May as well check fuel filter while your at it. When you unplug the pcv it should change your idle. Make sure you are useing correct ports too.
 
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