Thursday, September 22, 2011

How can i change and look if my fuel pump is bad?

i have a 97 eclipse gs and my car doesnt wanna start it sounds like it is bout to but then cuts off i checked the battery and nothing still did the same i add a little carb cleaner and it sound like it was bout to turn on but stoped so im guessing it has something to do with fuel any suggestionsHow can i change and look if my fuel pump is bad?
Fuel pump problems. To see if you have a pump or crank position sensor bad do this, turn the key on and see if you hear the pump prime, if not use a can of starting fluid and have someone spray the fluid in the air cleaner while you start it, If it starts and then quits running when your partner stops spraying, YOUR PUMP IS BAD., or fuel filter is clogged, you should check the filter first since the fuel filter should be replaced EVERY 10-12 thousand miles. if you listen to the manual or dealer recommendations you will be replacing fuel pumps on a regular basis. and folks wonder why they go out.



Pumps are expensive and not easy to get to unless you have a DODGE then the filters are on the pump assembly IN THE TANK.

Now if the car doesn't start with the fluid. just sits there and cranks but wont fire, you prob have a crankshaft position sensor bad. That is what tells your coils and spark plugs to fire..





Things to check on your car



Fuel pump, filter, fuel pressure regulator, MAF, TPS, O2 sensors Dirty air filter. Bad wires, plugs.How can i change and look if my fuel pump is bad?
Water in tank (condensation)

Fuel pump went bye bye

Gas filter filled with water or clogged with debrisHow can i change and look if my fuel pump is bad?
how do you know it,s the pump. it could be a clogged fuel filter or the pump fuse is blown.How can i change and look if my fuel pump is bad?
Pull 2 plug wires at opposite ends of the engine. Insert a screwdriver into the end of the wire and HOLDING THE HANDLE, hold the end of the driver over a metal part of the engine while someone turns the key. Yo should see a fairly bright blueish white spark. On both of them. If not, you have something wrong in the ignition system. Either bad cap, rotor, coil packs or CPS. If yo have spark, it is time to check fuel.



Change the fuel filter. It sounds like you have spark, but insufficient fuel pressure. After changing the fuel filter, try it. See if it starts.



If not, you will need a fuel pressure gauge and a buddy. Have the buddy crank it over while you have the pressure gauge on the injector rail. You should see about 30PSI or more. Any less and you need to find the test point before the pressure regulator. If you have good pressure after the regulator, this means your pressure regulator has gone bad and needs to be replaced.



If you have poor pressure before the regulator, then your pump has gone bad. The fuel pump is an in-tank model. Hopefully there is an access hatch under your spare tire in the trunk. If not, you will have to remove the fuel tank. And that is a whole nother can of worms.



You have to jack the vehicle up, at least in the rear. Loosen the fill tube at the top. Check clearance all around. There are usually two straps holding the tank in, with a bolt assembly on one side. Undo the bolts slowly and carefully and lower the tank down, making sure not to stretch wires or tubes. At the top of the tank, you will see some wires and a hose. This is the inlet/outlet. There might be two hoses. Usually it is a cam-type locking ring. Being careful to not produce a spark, unlock the ring by turning it counter-clockwise. Carefully pull the assembly off the top of the tank. Pump replacement should be fairly straightforward.