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no fuel to cylinders
95 disco 3.9 will not start, cranks, strong spark, 40lbs pressure in the fuel rail. after cranking for a while i pulled the plugs and they are dry. injectors do not seem to be firing?
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RE: no fuel to cylinders
Bad crank sensor.
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RE: no fuel to cylinders
Unless it's different than on a DII, the crank sensor controls the spark, he has that. I think that the camshaft sensor fires the injectors, but it seems like it should have a default mode if it fails. Do you have any check engine light and codes?
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RE: no fuel to cylinders
Diagnostics – Failure to Start These procedures assume that the battery is charged and is capable of turning the engine over, and that no DTCs have been set. Fuel pump operates, and engine turns over but does not start. No “check engine” light with the ignition on. This usually indicates that the security is armed. Attempt to disarm it by cycling the PLIP several times. If this fails a Rovacom will have to be used to perform a Security Learn procedure. ”Check engine” light on with the ignition, engine turns over and attempts to start but then stops. Check that the fuel pump runs briefly when the ignition is turned on. If you do not hear the fuel pump check the fuses. If the fuse is normal the fuel pump has failed and must be replaced. If you do hear the fuel pump it is probable that the MAF sensor has failed and must be replaced. |
RE: no fuel to cylinders
I copied that from a GEMS manual, he doesnt have a cam sensor, he has a distribitor.
There are only two reasons a GEMS engine will not run, bad crank sensor or bad MAF. Assuming all else is good, i.e., fuel pressure and spark, which his is good. |
RE: no fuel to cylinders
Possible cam sensor.
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RE: no fuel to cylinders
my 95 does not have a cam sensor or a crank sensor according to the rave cd. what triggers the injector pulse
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RE: no fuel to cylinders
If it doesnt have a cranksensor, then I do not know.
I would think that it has to have a crank sensor. |
RE: no fuel to cylinders
ORIGINAL: bobm my 95 does not have a cam sensor or a crank sensor according to the rave cd. what triggers the injector pulse |
RE: no fuel to cylinders
older bosch systems took a signal from the tach input to pulse the injectors but for a 95 disco i can't figure it out, unless the maf sensor is the triggering device butmaf sensors normally have a default output which allows the engine to start, this should also be true for the other sensors like fuel temp, collant temp, and throttle position. i am new to land rovers andthe 95 discoappears to be unique as far as the fuel system is concerned
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