93 1.8 died no start- stumper

[bshalla]

so i have spark and on time while cranking, fuel pressure 40psi while cranking between the two rails, no air restriction. it did die as if it were running out of fuel. i checked all sensors and relays that have to do with the injectors, all tested within spec. im lead to believe ecu is at fault unless someone convinces me otherwise. Thanks for your input

[SuperK]

the air flow meter may be faulty, or timing may have jumped. I would doublecheck timing is correct then your air flow meter.

[bshalla]

timing is 7-9 degrees advance while its cranking, tested maf as per service manual and tested within limits.

[SuperK]

you can try removing the air flow meter from the intake hose and see what happens when you crank it. it'll pull unmetered air and should rev uncontrollably and you can just turn the key and shut it off. sometimes it'll get stuck closed and wont' allow proper airflow.

there's a 100 people selling k8 ecu's for super cheap as well if you wanna go that route. I'm one of the people included in the "trying to sell their ecu" group

[bshalla]

well im not seeing any other route i tried the meter on and off and it moves by hand freely

[Sleeper6]

checked compression?

[Ryan]

It juts cranks normally, as if it were not getting spark or fuel?

Do the injectors actually fire? remove the distributor, turn the key to "ON" and turn the disty by hand. listen for their ticking in time with you rotating it.

[bshalla]

What should the compression be? If i turn dist by hand the injectors should pulse is what your saying?

[Ryan]

Anything over 80 and the motor should run... but 140 minimum, 140-170 is standard, 180 is excellent.

and yes, thats what I'm saying. Its an easy way to make sure its working. The only difference turning it by hand is the starter isn't turning, so you can actually hear whats going on. As far as the electronics are concerned, its the same.

[bshalla]

if i dont hear anything that would mean cam sensor? there also is no codes

[bshalla]

well i could here them hiss but the strange thing is that i had them unplugged from when i tested for voltage?

[bshalla]

so if i have injection, how i can make sure its on time. I even pulled distributor apart to make sure everything is lined up and tride and different cam sensor and the same time

[bshalla]

..still looking for more possible causes if anyone knows anything

[Ryan]

if i dont hear anything that would mean cam sensor? there also is no codes

well i could here them hiss but the strange thing is that i had them unplugged from when i tested for voltage?

so if i have injection, how i can make sure its on time. I even pulled distributor apart to make sure everything is lined up and tride and different cam sensor and the same time

..still looking for more possible causes if anyone knows anything

the hiss is the fuel pump running, this means your NE1 signal (the 6 tooth hall effect) is working. This means your injector and ignition timing is correct.

Do you hear the injectors ticking? If you don't, the problem may still be with the G signal, the hall effect that tells the ECM where cyl 1 TDC is. Without this, it won't know where it is in the 4 stroke cycle, so will never send the first ignition event.

Basically, you need to verify that you have spark. Remove a plug wire, hold it near a ground, and watch for the spark when someone cranks it. If you have spark, you have fuel.

[mitmaks]

Check for broken timing belt