Hey scotty, I have a question for you: I have a mitsubishi lancer exe 1991 1.5EFI 90Hp 4g15 that cranks but wont start unless you inject fuel directly into the air intake hose. When it starts it runs reasonably well but if the gas pedal is pressed even slightly the engine dies. I checked the fuel system the pressure seems to be okey. The compression seems to be good. I tried disconnecting MAP, MAF and throttle position sensors but none of them had an effect. Do you know if it is possible to use computer for a daignosis (does this car have the scan port). Do you have any ideas why it doesn't start? Than you very much.
Best regards, Justas
@rosstheboss if he has pressure tested the fuel system and it is in spec, you can rule out the fuel pump or fuel filter. Otherwise flow would be reduced.
OBD-II software was not implemented until 1996, so your car is on the old software and incompatible with most modern scanners.
check your fuel pump it's probably that
Obviously make sure your fuel pump is priming when you turn the key to 'run'
Otherwise, I honestly have no idea on an old Mitsu like that.
Does everything work fine when it has started up?
Yes it works fine and runs decently when started and everything else works fine. My dad took it to the electric like 7 years ago and he said that it needs new part that controls air pressure to the engine but that part costed like 500 euro(brand new). The fuel pump is good it gives the pressure needed, the car has like 200k kilometers on odometer. I changed the MAF sensor. Don't know what to do.