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Problems starting...fuel pump, starter or what?

  • Thread starter Thread starter DaveB
  • Start date Start date Aug 5, 2005
D

DaveB

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Jul 13, 2002
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Middlesex and Pomona, NJ
Aug 5, 2005
#1
  • Aug 5, 2005
  • #1
For the past year or so, my car has been a bit of a pain to start. Unless you wanted it to crank 6/7+ times, you had to prime the fuel pump, where it would start after 2 or 3. This is one of those problems that slowly got worse, to where it finally is now. Like it is now, one priming of the fuel pump still takes 6/7 cranks for the car to finally fire up. Now I figured it was just the starter, but I was talking to my friend about it last night, and he was saying it could be something else. Well this morning on the way to work I primed the fuel pump, and it just didnt have the usual loud prime that it used to. I did it 4 times and by the 4th it finally had the loud noise that it used to and it fired up after 3 or 4 cranks, a lot quicker than it usually does after sitting all night. So does this mean my fuel pump is going south? Or could it still be the start? Thanks.
 

94TURBO5 O

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Mar 14, 2004
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Aug 5, 2005
#2
  • Aug 5, 2005
  • #2
Check out your plugs if they're old. How many miles on your car?
 
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DaveB

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Middlesex and Pomona, NJ
Aug 5, 2005
#3
  • Aug 5, 2005
  • #3
Plugs and wires and 2 years old. 107k miles on the car. The fuel pump and starter are originals as far as I know.
 

94TURBO5 O

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#4
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I don't know if a fuel pump would cause probs for a year. When they start to go bad they die soon after. I think your're having an ignition prob, IMO and your plugs may be fouled.
 
D

DaveB

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#5
  • Aug 5, 2005
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Actually the plugs are a year old, I remember I changed them out. The fuel pump does sound really weak when I first prime it though. Also, after I have been driving around for a while, all I have to do is prime it once and then it only takes 3 or 4 cranks and fires up. I will pull the plugs this weekend though, and see what theyre looking like.
 

Hef5.0weisen

20+ Year Stangneter
Mar 5, 2004
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NorthWest Florida
Aug 5, 2005
#6
  • Aug 5, 2005
  • #6
RIO5.0 mentioned something for a smiliar problem a while back, something about a pressure regulator (or something like that) on the pump itself. Try searching for it, good luck man, sounds like fuel to me
 
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DaveB

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Jul 13, 2002
637
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Middlesex and Pomona, NJ
Aug 5, 2005
#7
  • Aug 5, 2005
  • #7
Well I definitely think it has something to do with the fuel pump. I just started it before after sitting for a few hours. And the fuel pump just sounded weak the first 2 times I primed it. The third time it sounded like it should. Ahhh this damn car.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
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Aug 5, 2005
#8
  • Aug 5, 2005
  • #8
Hef5.0weisen said:
RIO5.0 mentioned something for a smiliar problem a while back, something about a pressure regulator (or something like that) on the pump itself. Try searching for it, good luck man, sounds like fuel to me
Click to expand...
He was probably talking about the check valve in the pump assembly. It keeps fuel from draining back into the tank via the feed line.

A FPR can also pass to much fuel and cause low pressure. The test is to use a fuel link crimp tool and crimp the return line. If pressure goes up, the FPR is passing too much fuel. If the pressure stays the same, the pump is weak.

The easy way to tell is to put a gauge on the schrader valve and not pressure before priming. Then prime once and note pressure. Keep doing this till pressure is to spec.

Good luck.
 
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