New fuel pump quit working. Took it out and replaced it. Found the fuel sock had basically disolved for some reason. Bits of sock in gas tank. Cleaned out, put in new pump and sock. Hard to crank now, take 10 times to get it to crank. Thinking Fuel filter may be clogged with bits of fuel pump sock. Does this sound resonable as cause of problem. Replace fuel filter? if so, don't know where it is?
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1990 Mazda Protege
Question: Replaced Fuel Pump twice
Answer #1Bret Bodas from RepairPal Test Shop, August 27, 2009, 11:15Master
I always try to replace the fuel filters when replacing a failed fuel pump, for the reason you mention. Do you know the fuel pressure? And what about the pump volume?
Replystrangebob, August 27, 2009, 11:41Rookie
Have no idea how to even check that. I'm not a mechanic. Trying to do it myself. After starting, runs good. easy to start back up unless you let it sit for a couple hours, then back to hard to crank. I know its not getting the gas. When I put in the 1st fuel pump, cranked right up. Only when it failed and found the Sock has broken apart(probably why fuel pump failed) and put another pump did this begin?
ReplyBret Bodas, August 27, 2009, 11:51Master
"Have no idea how to even check that. I'm not a mechanic. I know its not getting the gas."
How do you know it's not getting fuel?
I commend you for trying to fix this, but these problems can be difficult to resolve, even for highly experienced technicians. Do you have a good repair manual that has some diagnostic information?
Replystrangebob, August 27, 2009, 12:32Rookie
Yes, gone thru and checked ohms some of Electrical parts I could get to. All checked out OK. Hven't cheked out pressure regulator but from what I understand? that wouldn't keep it from starting right away. With a new fuel pump installed, the next item up the path would be the fuel filter. >( Has never been serviced, auto has 200,000 miles on it (Spare Car) but I like it and it get 30 mpg. Anyway. If I replace the fuel filter and its still hard to start, I guess I'll donate it. Just thought that could be the problem. Thanks for your help
ReplyVisitor, July 10, 2010, 14:51
replace fuel pump. It is located on the firewall in the engine compartment follow the fuel line from the injector housing to the firewall. It is down low and can be difficult to takeout..
Answer #2Visitor, August 03, 2010, 19:13
sounds good, back flush the system to get rid of any more materials in the line... I have the same problem now.
Answer #3Visitor, January 13, 2011, 20:42
Stop using fuel additives it can melt fuel line products.
Replycreative country boy, February 16, 2012, 15:37Rookie
I don't think your problem is fuel pump related,,,,I suspect the engine coolant temperature sensor.. Or possilbe a injector is leaking and flooding the system.. I would say you need to isolate as to if the problem is lack of fuel or to much fuel..Check the exhaust pipe for rich fuel mixture. It will be smut black is rich or very clean if lean. Check resistance in the coolant sensor.. Not the guage sensor but for the computer.. This will normally be at least two wires never a one wire conection..