Kenosha Warrior Posted May 4, 2008 Share Posted May 4, 2008 What gives? This is the 2nd one Ive had sheet the bed in 2 weeks. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 4, 2008 Share Posted May 4, 2008 What gives? This is the 2nd one Ive had sheet the bed in 2 weeks. What are they doing, burning up? If you have a multimeter, disconnect one end of the ballast resistor and put your meter in series on the 10A (or higher) scale and start it up. This will tell you how many amps the pump is drawing. I'm guessing it should be no more than 10A draw. Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted May 5, 2008 Author Share Posted May 5, 2008 well, I'm looking for insight really. Today, I could run it for about oh, 10-12 minutes and then it would cut in and out with fuel delivery. Shut it down, start it up, same thing, 10-12 mins, cut in and out. Even giving it too much pedal will make fuel delivery go weird. With it bypassed, runs like a scalded dog. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 5, 2008 Share Posted May 5, 2008 well, I'm looking for insight really. Today, I could run it for about oh, 10-12 minutes and then it would cut in and out with fuel delivery. Shut it down, start it up, same thing, 10-12 mins, cut in and out. Even giving it too much pedal will make fuel delivery go weird. With it bypassed, runs like a scalded dog. Okay, so they are not burning up. The ballast resistor should read between 2-4 ohms. If that measurement's good, measure the voltage at the pump with the resistor in the circuit. Should be 9-11 volts. If the voltage is lower than that, you've probably got corrosion at the ballast resistor wire connectors causing excessive voltage drop, since it runs okay when you jumper out the resistor. Wouldn't hurt to do a fuel pressure test at the rail and change the fuel filter too. :cheers: Link to comment Share on other sites More sharing options...
FxRacing282 Posted May 5, 2008 Share Posted May 5, 2008 yeah what he said check pressure at startup and then once it starts to get crappy to see what the drop is. then check voltage to the fuel pump during priming and once it starts to turn to garbage Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted May 5, 2008 Author Share Posted May 5, 2008 well, I'm looking for insight really. Today, I could run it for about oh, 10-12 minutes and then it would cut in and out with fuel delivery. Shut it down, start it up, same thing, 10-12 mins, cut in and out. Even giving it too much pedal will make fuel delivery go weird. With it bypassed, runs like a scalded dog. Okay, so they are not burning up. The ballast resistor should read between 2-4 ohms. If that measurement's good, measure the voltage at the pump with the resistor in the circuit. Should be 9-11 volts. If the voltage is lower than that, you've probably got corrosion at the ballast resistor wire connectors causing excessive voltage drop, since it runs okay when you jumper out the resistor. Wouldn't hurt to do a fuel pressure test at the rail and change the fuel filter too. :cheers: Don, you hit it on the nose. the little plugs themselves are blacker than night, lots of corrosion. Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 5, 2008 Share Posted May 5, 2008 Cool. Just cut 'em off and solder (not crimp, solder has less voltage drop) some new female spade connectors on and you should be golden. :cheers: Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now