1981 Dodge Diplomat replace fuel pump

Tiny
JOE1953
  • MEMBER
  • 1981 DODGE DIPLOMAT
  • 186,000 MILES
Engine want start unless pour gas in the carburetors I check the fuel pressure it had about four pound pressure and I replace a new fuel pump and the new pump is not pumping any gas could I have replace the fuel pump wrong. I did notice the new fuel pump rock arm was a little differant from the old fuel pump the arm on the new fuel pump look just a little shorter do that make any differant.
Sunday, August 4th, 2013 AT 5:44 PM

9 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Probably the wrong pump and the one you took off was ok for a carb. Its probably time for a car overhaul
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Monday, August 5th, 2013 AT 8:20 AM
Tiny
JOE1953
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  • 793 POSTS
Why do I have to pour gas in the carburetor in the morning time for it to start after the car set over night. Are you saying the camshaft worn out.
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Monday, August 5th, 2013 AT 8:33 AM
Tiny
HMAC300
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Cause you didn't give us the righ tinfo to begin with. You didn't say it ran ok after you did this. Check to make sure your choke is working and hooked up. It still may need a carb overhaul because float level may be to low.
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Monday, August 5th, 2013 AT 8:35 AM
Tiny
JOE1953
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  • 793 POSTS
The car want start after I replace the fuel pump, the new pump is not pumping gas the choke is working.
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Monday, August 5th, 2013 AT 8:43 AM
Tiny
HMAC300
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Then it is the wrong pump or it's installed wrong especially since in first question yousaid it didnt' look like pump you took out.
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Monday, August 5th, 2013 AT 8:44 AM
Tiny
JOE1953
  • MEMBER
  • 793 POSTS
I recheck the installing of the pump and the pump was installed correct, but when I take the gas cap of a lots of air come out of the gas tank will that have anything to do with gas not been in the fuel bowl the next morning after the car set over night. The gas is leaving the fuel bowl.
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Friday, August 23rd, 2013 AT 11:31 PM
Tiny
HMAC300
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It could be a wrong gas cap or it's vacuum you are hearing an dnot air. Gas not being in fuel bowl may have incorrect line hook up, vent blocked to bowl or low float level among other things.
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Saturday, August 24th, 2013 AT 5:42 AM
Tiny
JOE1953
  • MEMBER
  • 793 POSTS
How do I kmow the car have the wrong gas cap, how do I check for incorrect line hook up, vent blocked to bowl.
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Saturday, August 24th, 2013 AT 8:37 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it's the original cap you are okd as well as line. This probably needs a carb overhaul rather than the last reply I gave you sorry.
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Saturday, August 24th, 2013 AT 6:26 PM

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