KL-ZE will not start, have spark,fuel,compression etc

[dave0r]

Gidday gents

My car has been going for MONTHS, been to the race track , lotsa road driving, but now will not start
Engine cranks fine
I have compression
I have HEI mod and i have spark, big spark with massive coil
i have fuel pump going, as its hardwired
But i have completely Dry spark plugs after trying and trying to get to start <-- the odd bit

NOW

here is the odd thing, if i take put some fuel into the manifold and crank it will start!
leave it running for 2 mins then turn it off and try again..it will NOT start again, just keeps cranking

i have converted a 4cly BG ford laser to a KL-ZE using MX-3 parts (JDM)
i have MX3 ECU loom and MX3 power loom, KL-ZE ECU, AFM etc etc

all has been working together for the last 8mnths
i have replaced the ECU and the AFM....will not start still

Only clue i have is that i started to get worse and worse and worse,

Ideas would be welcome

Thanks mates

Dave

[wytbishop]

Well my first instinct is that there is a fuel delivery problem. You have said that it started when you put fuel in the manifold. I would try that and see how long it will run. My bet is that it will die eventually.

I would also trace the fuel pressure. Remove the feed hose from the rear fuel rail and crank it into a bucket. If you get fuel there I would then pull an injector and make sure that it is spraying while cranking.

The manual suggests that you can tell if the injectors are operating by listening with a scope...and other procedures worth reading.

http://www.mx-3.com/manuals/showimg.php ... F2-115.gif

[dave0r]

nope injectors are fine, as the car does run, and runs fine, no rough idle, no miss fires, PLENTY of power.

I car runs for for well over 2-4 minutes last night when it started , so the little amount of fuel does get it going, and the injectors take over when i stop cranking

possibly the ECU is not opening the injectors when cranking? , but ive replaced with a good ECU anyways
or the ECU is not getting power , or possibly the ECU is not getting power when Cranking?

and as i have spark while cranking, the little amount of fuel i put in the mani is enough to start the engine so i can stop cranking?

What color is the MX3 power to ECU wire?
Blue? or and ???

[Daninski]

Sounds like a faulty fuel pump to me.

[dave0r]

fuel pump works great

comes out the lines fast


im starting to think its electrical to the ECU or relay

[mitmaks]

Id check fuel pressure coming out. It might seem like its working but it might not put out enough psi

[dave0r]

thanks for you help guys

i know what your all saying about the fuel pump and relay etc

but they dont explain how the car can run PERFECTLY ....once it gets going ?
fuel pump or not....it doesnt run lean, injectors fire up...doesnt smoke or run rich

i thnk there is something more evil at work with the electrical system of the car

as i said

the plugs are dry when trying to start it ...

poor a few ml/s of fuel.. its fine ??


very odd