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The mkiv Supra Owners Club

not getting fuel to start


wilkorangerover

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the car starts then stops instantly this happens repeatedly, then it will run for a few seconds longer and stops, eventually it does start but then is really rich,

 

the air flow flap was stuck shut the last time it started but ive freed it of now

 

checked fuel pump thats ok (but there s only power when the engine turns over )

 

took the plugs out and there bone dry like theres no fuel to fire, but when it does fire and run there coked up

 

it has jap immobilizer

 

could anybody tell me what to check next?

 

injectors- do they fuck up??

or the fcon ecu?

 

a mobile mechanic has been looking at the car with me..

 

 

any help would be great (japshow not far away :()

Edited by wilkorangerover (see edit history)
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not sure if this is any good to you but take out the spark plugs then turn the fooker over. If you don't take out the efi fuse then the pump will fire fuel into the cylinders. This will flood it but you will know whether its fueling or not.

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I don't mean to sound rude or disrespectful, but please, for your own sake, stop messing with it.

 

The car needs to go to a competent garage and needs to have the map and everything else checked.

 

As mentioned, your most cost effective option is to get Ryan.G to visit your place, fit a solaris and see what the car is doing.

 

If you continue to mess around with it, it will likely cost you a lot of money to put right

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I don't mean to sound rude or disrespectful, but please, for your own sake, stop messing with it.

 

The car needs to go to a competent garage and needs to have the map and everything else checked.

 

As mentioned, your most cost effective option is to get Ryan.G to visit your place, fit a solaris and see what the car is doing.

 

If you continue to mess around with it, it will likely cost you a lot of money to put right

 

as homer said mate it's no good to keep guessing, get it checked by a good garage/turner otherwise you'll read loads of different faults that other people have had and might cause other faults on yours.

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It won't be the O2 sensor, assuming you're talking about starting it from cold. It will be in open loop until the sensor warms up, so won't be using the O2 sensor. It will be a dodgy map or incorrect fuel pressure for the map if you have an adjustable FPR, but most likely the map.

 

Don't run it if it's running very rich, it will destroy your engine through bore wash - i.e. the excess fuel will wash the oil from the cylinder walls and you will score the cylinder walls and knacker the rings.

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there is only power to the fuel pump in the `start` position , is this correct???

 

no power to the pump with ignition on, just start position....

 

Ignition on should prime fuel system via the pump. You should hear a drone.

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no it does nothing until engine starting

 

no power going to the pump until engine turning over

 

Definitely something wrong there. Its very noisy so hardly easy to miss. When you turn the ignition on the pump will prime for when you fire it up.

 

Its quite annoying but will only last a few seconds.

 

Take the car somewhere reliable to check it over and get it up and running properly.

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just put a test light on the plug and nothing lighting up until engine turning over

 

By turning over do you mean you have the key in the starter motor position or do you mean the car is turning over itself and the key is in ignition position?

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starter motor position

 

should i try the 12v mod??

 

You SHOULD take the car to someone who knows what they are doing. You might end up damanging more stuff.

 

It does sound like there is something wrong with the wiring for the fuel pump though so the 12v mod may sort that out enough to get you to a garage to get it properly sorted.

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