12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

gas pedal sticking

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  #11  
Old 12-22-2010, 12:05 PM
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theres no transmission in my truck yet and it only started when i put the clutch pedal and brake pedal on the rod on the bracket. im gonna start it tonight and let my truck warm up its not ran in two months. then ill go about some wd 40 or figure somethin out!
 
  #12  
Old 12-22-2010, 11:22 PM
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if my trucks not running the pedal is real hard to push
 
  #13  
Old 12-22-2010, 11:53 PM
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does it seem to stick
 
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Old 12-23-2010, 09:39 AM
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The governor weights help the pedal when the engine is not running because they are set for idle rpm, so at 0RPM they are all the way in. Then there is the design concept of the things inside the pump that move when you step on the pedal. If you push the shutoff solenoid up you can go about 1/2" with the pedal before it gets hard, that half inch is actually "floored" inside the pump, after that 1/2" you are just pressing against a spring. When you floor it all the way with the engine off the things in the pump kinda go so far that they roll over a breakover point and tend to like to hold. A compound bow is an example of this, pull it back all the way and then let off a tiny bit and it gets really easy right on that breakover point. The pump doesn't have oblong things in it as far as I know(like the pulleys on the bow) but the way it is designed makes it seem like it does.

When the engine is running, that breakover point is constantly raising as the governor weights counteract it and move it up higher until it eventually isn't reachable.
 
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Old 12-23-2010, 01:02 PM
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