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Automotive Powered Off Road (AKA: Buggys, Jeeps, Trucks, Etc,Etc. ) => Motor and Drivetrain => Topic started by: Yummi on October 12, 2008, 11:20:39 AM
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Ground?
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Sand in the fuel? filter before the pump?
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no sand
yes on filter, even bypased that and checked the pump while out there - no pressure.
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does it have any sort of return line, maybe made to much pressure and burned it up?
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sounds like it's locked for some reason.filter is before pump,correct?
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Lines thoroughly flushed before assembly?
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Filter before pump - check. Flushed lines? Dont know, bought used.
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Yummi, Master is asking if you flushed the lines when you changed the pump. Maybe there was stuff in the lines when you bought it and some of it burned up the original pump. Then you replaced the pump and more stuff from the line got into the new pump and froze it up also. Id pull the pump and bench test it it i was you. Maybe flush it out and see if you can get it to spin over. I used alligator clips to an extra battery i had laying around to bench test mine when it was giving me problems. Also....just an idea but are you sure its completly submerged in fuel?.Thats assuming its a tank pump. Or that its getting fuel to the pump constantly. I know i run one for about a minute out of the fuel and it locked up. They have to have fuel to them at all times or they can get hot and burn up. Just some ideas.
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Did not flush the lines - did replace the filter. Pump is inline and is mounted below the lowest point of the tank and there was plenty of fuel in the tank. I will pull and bench test.
Anybody have experience with the carter pumps re: Reliability? Any ideas on which is more reliable than the other?
Thanks
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Are you using an EFI motor? Fuel injected? If so Walpro has some fuel pumps that are good quality and reasonable on price. What motor are you running? If not EFI you can run one of those inline pumps from auto parts for race motors for about 40 bux. Thats what i did when i had a carb'd motor.
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2.0 subaru, fuel injected. the carter was on the car, figured it was direct replacment, so went the same route. likely need same specs as carter, or slightly higher.
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Got an idea for you. Ditch the carter. Pick up a walpro 255 fuel pump. They are worth the money. Thats all i run on my turbo honda civics. My buddy has a sti subaru that runs a walpro 255 and runs like a champ. I research that and go that route. Or maybe find out what is the deal with the one you got. My bet is it is overworking itself. May not be able to handle the load the EFI is putting on it or maybe the efi is sucking all the fuel out of it faster than it can pump and therefore burning it up. If i was you i would find out first what the specs are on the carter and make sure it will handle the high demand and pressure required for FI. Compair the specs of it with the stock fuel pump. If its not up to par then got the walpro route. i know people here use the walpros on their buggies. Thats what i used before and what i will use on this build.
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Did you bench test?
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Uh don't check on the carter specs.Check the specs on the subie engine. Match a walbro against those.I suspect the 255 would be fine tho.
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Did you bench test?
Why? I've never had a bench fail yet. Sorry,I just couldn't resist!
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HA HA HA..yokes on me. Was funny though. I was telling him to check the carter fuel pump against the stock one and see if they match cuz that is what he has. Maybe it cant handle the demand of EFI and thats why they keep locking up. Im sure the walpro would handle whatever he does cuz i have one force fedding a bottle fed honda makeing 860 WHP. It was just my .02 tho.
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Bench - no - still need to dismount it, but, did run leads to it eliminating all relays, cpus, etc and same deal.
So Walpro it is. Guess Summit will warranty the Carter, so I will have a 40 minute spare?
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http://www.lightningmotorsports.com/walbro.htm (http://www.lightningmotorsports.com/walbro.htm)
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Just to offer an option. I have been runing a pump from Marren Fuel injection for 4 years with no problems. I believe DSRACE has the same pump in his new car. I think they are only $130 buck and support 450 hp. :)
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Thanks,
I exchanged with Summit - good policy. We will see. I also replaced entire fuel filter assy to flow more at a higher filter rate. If it craps again, warranty be damned. Time for something different.
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Make shure your new filter is rated for fuel injection. Also just the smallest piece of trash in your pump and it can stop working.
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+1 Walbro!
It's what I've run for the last ~80,000k's.