Re: jeep wont start..it turns over but i dont hear the...
It sounds like the fuel pump try banging on the fuel tank with a block of wood while someone else attempts to start it. if it starts after a couple hits its the pump if still nothing check the relay under the hood
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we dont have this engine here, USA.
but i have the WG jeep book,
starting page 12 , chapter 14
FUEL INJECTION PUMP BLEEDING
(1) If the fuel injection pump has been replaced,
air should be bled at the overflow valve before
attempting to start engine.
(a) Loosen the overflow valve (Fig. 18) at the
rear of the injection pump.
(b) Place a towel below the valve.
WARNING: WHEN CRANKING THE ENGINE TO
BLEED AIR FROM THE INJECTION PUMP, THE
ENGINE MAY START. PLACE THE TRANSMISSION
IN NEUTRAL OR PARK AND SET PARKING BRAKE
BEFORE ENGAGING THE STARTER MOTOR.
CAUTION: Do not engage the starter motor for
more than 30 seconds at a time. Allow 2 minutes
between cranking intervals.
(2) Crank the engine for 30 seconds at a time to
allow air trapped in the injection pump to vent out
the fuel injector drain tubes. Continue this procedure
until the engine starts. Observe the previous WARNING
(3) Tighten overflow valve.
HIGH-PRESSURE FUEL LINE BLEEDING
WARNING: THE INJECTION PUMP SUPPLIES HIGH-
-PRESSURE FUEL OF APPROXIMATELY 45,000 KPA
(6,526 PSI) TO EACH INDIVIDUAL INJECTOR
THROUGH THE HIGH-PRESSURE LINES. FUEL
UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE
THE SKIN AND CAUSE PERSONAL INJURY.
WEAR SAFETY GOGGLES AND ADEQUATE PROTECTIVE
CLOTHING AND AVOID CONTACT WITH
FUEL SPRAY WHEN BLEEDING HIGH-PRESSURE
WARNING: DO NOT BLEED AIR FROM THE FUEL
SYSTEM OF A HOT ENGINE. DO NOT ALLOW FUEL
TO SPRAY ONTO THE EXHAUST MANIFOLD WHEN
BLEEDING AIR FROM THE FUEL SYSTEM.
Bleed air from one injector at time.
(1) Loosen the high-pressure fuel line fitting at
the injector (Fig. 19).
(2) Crank the engine until all air has been bled
from the line. Do not operate the starter motor
for longer than 30 seconds. Wait 2 minutes
between cranking intervals.
(3) Start the engine and bleed one injector at a
time until the engine runs smoothly.
pump timing is on next page
or tank filter line priming before. above.
sounds like a bad fuel pump. open the gas cap and listen when you turn the key to the on position, not all the way to engage the starter, you should hear a buzzing for 5 or so secands that is the fuel pump in your gas tank. if you dont hear that buzzing the intank fuel pump is probley not working.
Did you check for fuel pressure on the line from the tank while you had the filter off? Do you hear your fuel pump prime when you turn the ignition on? First I would listen for the hum of the fuel pump when you turn the key to the run position (not starting the engine) May have to get a helper and listen at the gas filler neck with the cap off. If you dont hear your fuel pump, check your fuses and relays. If the relay clicks when your helper turns the key on ( put your finger on the relay and ear down close to feel/hear the relay actuate)., and fuse is good, yet you do not hear the pump prime, I would say your fuel pump is shot.
If it is a diesel,check for fuel pressure coming off the direct drive pump hose while cranking the motor.
dont go replacing everything...thats gonna get expensive real quick...especially that fuel pump. yep...the pump is inside the tank. stand out side your truck,and turn the key over,but not enough to start it. you should haer a whirring sound lasting about 2-3 secs. come from the back of the truck. this is the fuel pump powering up. if you dont hear it...then the pump is bad. if you do hear it, have a friend turn the key while you look at the carb/injectors to see if fuel is spraying thruthem,if it isnt....then you have a clogged fuel filter. BUT...b4 you do any of this...check your fuel pump relay and fuse to make sure they are good. a 10 cent fuse beats a 200 dollar pump any day.
keep me posted!!
SOUND LIKE THE ELECTRIC LOW PRESSURE FUEL PUMP CHECK FUSE TO SEE IF PUMP GETTING POWER. IF NOT REPLACE FUSE AND CHECK THE WIRE TO PUMP.IF PUMP IS GETTING POWER..REPLACE FUEL FILTER FIRST.IF IT DONT HELP.COULD BE THE ELECTRIC LOW PRESSURE PUMP. FAULTY. IT PUMPS DIESEL FUEL IT INTO INJECTION PUMP TO BE PRESSURIZED TIMED AND INJECT.SEE IF LOW PRESSURE PUMP DONT WORK THE WHOLE ENGINE WONT RUN.THE INJECTION PUMP NEED FUEL FROM LOW PRESSURE ELECTRIC PUMP TO RUN ENGINE.
ALL American sold vehicles are fuel injected since around 1986. That having been said, have someone put their ear against the open fuel filler tube. Turn the key on 2 or 3 times(not over) just on. If they dont hear a hum for about 2 seconds you'lll probably need an in tank fuel pump. Sometimes it's the relay but rarely.
I dont know what you have and havent checked, but I would start with the fuel filter. If that doesnt help, check the pump. Turn your key to the on position without starting the engine and have someone crowch by the gas tank and listen to see if they hear the pump kick on. If they dont hear anything, its probably bad. Im just speculating you mean you are not getting fuel up to the injection system and you havent checked these things yet. Sorry if im misunderstanding. Hope this helps, Clay
Is it fuel injected or carb??? Try holding the gas pedal to the floor while turning the jeep over. This sometimes makes gas pump thru to the cylinders. Have you changed the fuel filter???? I know alot of jeeps have a fule filter with a bypass back to the tank, and sometimes the filter will be bypassing to the tank instead of the the motor. Check it out?????
It can only be a couple of items. It is either not getting power to fire the plugs, or there is no fuel getting to the cylinders. You didn't say what year the vehicle was. Depends on the configuration. Is it fuel injected or carborated. Fuel injection systems have a lot more to check.