Hard Starting - Fuel Pump Failing?
09-26-2002, 12:24 AM
#1
Three Wheelin'
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Hard Starting - Fuel Pump Failing?
I re-sealed the injectors on my NA 944 a couple of weekends ago. Car runs much smoother and idles much better. However, since then I usually have to crank the engine twice to get it to turn over. Runs great after it starts.
Does anyone know if this is a sign of a failing fuel pump (like a check valve problem)? Is there any other problem that might be causing the slow starts, like a pressure regulator?
Thanks in advance.
Does anyone know if this is a sign of a failing fuel pump (like a check valve problem)? Is there any other problem that might be causing the slow starts, like a pressure regulator?
Thanks in advance.
09-26-2002, 02:00 AM
#2
Nordschleife Master
post definetely ended up in the wrong thread...
Looks like i can offer up some help here too though...
check the fuel pump check valve...I believe can be replaced seperate from the entire fuel pump itself. Something around $20 for the part, not sure what kind of labor is involved...but it can't be too bad.
Looks like i can offer up some help here too though...
check the fuel pump check valve...I believe can be replaced seperate from the entire fuel pump itself. Something around $20 for the part, not sure what kind of labor is involved...but it can't be too bad.
09-26-2002, 05:46 PM
#3
Pro
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Also might want to change the fuel filter if it has been more than 30K miles.
I changed out my fuel pump checkvalve last year and it was a PITA since it gets really corroded due to its location. You have to use flare wrenches to get the fuel lines and checkvalve disconnected. Count on having to remove the pump in order to get leverage. When you do this, the fuel line from the tank has to be crimped with a vise grip or the fuel will come out: recommend having a low fuel level prior to starting the procedure so the pressure is minimal. Use lots of Liquid Wrench or PB Blaster on the checkvalve before attempting to break it free!
Enjoy
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
I changed out my fuel pump checkvalve last year and it was a PITA since it gets really corroded due to its location. You have to use flare wrenches to get the fuel lines and checkvalve disconnected. Count on having to remove the pump in order to get leverage. When you do this, the fuel line from the tank has to be crimped with a vise grip or the fuel will come out: recommend having a low fuel level prior to starting the procedure so the pressure is minimal. Use lots of Liquid Wrench or PB Blaster on the checkvalve before attempting to break it free!
Enjoy
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
09-27-2002, 12:01 AM
#5
Burning Brakes
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just did the fuel filter 2 weekends ago. one end is a 19mm and the other is a 17mm. you can sub a 3/4" for 19mm if you need to but i'm not sure of the 17mm conversion. i couldn't get anywhere trying to hold on to the filter and turn so you'll need 2 wrenches: 19mm/19mm for one side, 19mm/17mm for the other side so you can push/pull to loosen it up.