 Fuel pump pressure relief and checkvalve |
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| saigon71 |
 Nov 30 2009, 10:06 PM
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Advanced Member  Group: Members Posts: 2,000 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
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Will have time tomorrow to work on the car. 74 2.0 D-jet. Car starts right up cold but requires two taps on the accelerator to keep it from stalling - after that, it runs great. I will be checking the routing of the fuel hoses as recommended by Rich.
Another reply questioned the proper functioning of the fuel pump pressure relief and check valve in the fuel pump. Fuel pressure set at 30PSI when the starter cranks. Pressure drops immediately to 20 PSI when the starter disengages. From 20 PSI, it bleeds down to zero within four minutes...but I have no idea if this is normal. Has anyone taken the pressure relief and checkvalve out of their fuel pump and cleaned/replaced the springs? Is this recommended? Thanks. |
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| swl |
Dec 1 2009, 08:21 PM
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
So back to the original question - he needs extra fuel to keep if from stalling when cold. Doesn't that suggest maybe the cht is going out of spec? Although they usually go rich as they go bad right? Resistance increases?
Maybe just the idle adjust? Sorry I can't give the answers - just questions. |
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Posts in this topic
saigon71 Fuel pump pressure relief and checkvalve Nov 30 2009, 10:06 PM
davesprinkle
Will have time tomorrow to work on the car. 74 2... Nov 30 2009, 11:04 PM
saigon71
Will have time tomorrow to work on the car. 74 ... Dec 1 2009, 10:14 AM type47 I see your comments about cranking fuel pressure, ... Dec 1 2009, 10:23 AM underthetire If it is bleeding off to fast, probably a fuel inj... Dec 1 2009, 11:27 AM Cap'n Krusty It's doping what it's supposed to do. Jum... Dec 1 2009, 11:47 AM underthetire
It's doping what it's supposed to do. Ju... Dec 1 2009, 11:50 AM |
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