Question about Cars & Trucks
Posted on Apr 07, 2015
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Posted on Jan 02, 2017
First off, what kind of vehicle do you have? I assume it is one that has an electric fuel pump in the gas tank, so that is what my answer will be geared to.
On the gas tank there are several lines. The most important ones for this conversation are the ones that deliver fuel to the engine and the one that returns the excess fuel back to the tank. They are usually different in size.
The larger one delivers the fuel and the smaller one returns the excess fuel back to the tank. Either one may be the culprit in this scenero.The tank is usually connected by a high pressure flexible fuel line to a stainless fuel line resembeling a brake line. At times this flex line may develope a leak for varrious reasons. It could be something rubbing against the line, it could be the crimped connection went bad and is leaking, etc. If it is your flex line, which it probably is there is a repair kit you can purchase to fix it. I have only been able to find this repair kit at NAPA. I've tried many auto parts stores and they are the only ones that carry it. The use of it is very simple actually. You find the leak in your line, which by the way is harder than it sounds and usually involves removing the gas tank. In which case you will need a special tool to disasemble the gas line from the tank. Once the leak is located you cut the line. You then have to place the remaining flex hose in boiling hot water for at least 10 seconds, which makes it soft and insert a splice fiting into it. When the line cools, it will shrink tight on the connector. You the do the same with the hose that came with the repair kit. Then do the same with the other end and install the fitting which connects to the gas tank. You should now be in business.
BTW. I have to do this very thing tomorrow.
Good Luck! and let me know if this helps you.
Posted on Mar 07, 2009
Go to the autozone website at autozone.com and register your vehicle. It's free and will give you access to an online repair manual for your vehicle. The procedures for changing the fuel pump should be available there. Sure hope this helped and best wishes.
Posted on Aug 03, 2009
Check fuel pressure - bar 5.7-6.3.change fuel filter.
Posted on Nov 30, 2009
Testimonial: "Thx good help. new pump $141 n ill b driving my car again tomorrow :-D"
SOURCE: Nissan sentra fuel problem
I believe this is a manual fuel pump and you may have lost the prime, no fuel in hose to tank. If the hose from rear frame to tank has a break or hole, it will **** air and not fuel from tank. If this is not the case, possible clogged fuel hose, tubing, or pickup tube in tank assuming you have turned the engine over serveral times and there is enough fuel in tank. Some tanks do not pickup from very bottom because of water laying in bottom of tank from condensation.
Posted on Dec 12, 2009
SOURCE: fuel pump not getting power
This is general information:
If your timing belt is broke the computer will shut the fuel pump off, as well as a low-oil pressure sensor (check your oil level).
If you have a bad Crank-shaft sensor this will happen.
A bad MAP sensor will not let the vehicle start but if you remove the electrical plug from it, it should start but will be rough.
A bad cam-sensor should only make it hard on fuel.
Inspect the wiring that leads directly to the tank - you may have broken a corroded wire, especially where it goes back into the body from the gas-tank back.
Try giving the tank a whack with a rubber hammer or chunk of wood as someone turns the key off and on to start position without actually turning the car over this will dislodge any dirt that may have got lodged into the fuel pump.
The computer or ECM: Inspect the harness at this location for movement and rubbing of the harness causing wires to fray and or break at this location up to a couple feet of the ECM perhaps.
I don't think you could have mixed up the return line to the tank from the feel line. The computer will shut it off if the pressure isn't reached within 2 seconds.
Without knowing more info on to what led to this problem, why you changed anything or what was the original problem and conditions, noises.
Sometimes there is a seal that seals the fuel pump to the sending unit and if this o-ring isn't put back in, you'll **** air but I don't think that this is your problem. I suspect the MAP or Crank Sensor.
I wouldn't replace anything without testing them though, and if you purchase a manual from Canadian Tire in Canada, it will tell you how to test each Sensor.
Most electrical I recommend taking to a garage and have them put it on the computer for $90. and then to replace the part that they put in the quote.
Posted on Jun 13, 2010
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