ok i just built my lsvtec with itr pistons and cams. i swapped it in my ef and wired it up and now it runs on three cylinders.
-when u remove spark from cyl. 4 nothing happens, it runs the same.
-when i remove fuel from that cylinder 4 the car stalls out and dies.
-when pulling the spark plug wire i can see spark going between wire and plug.
-the plug is pitch black.
-ive replaced the ecu, spark plugs, wires, injector.
-i stripped the harness and cosmetically the harness looks fine.

please help me out i need input fast.
thanks in advance.

 

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help

 

it's running on three cylinders.... but you're getting spark on the suspected 'bad' cylinder? And fuel?

 

maybe u miss read. i meant when i remove the spark plug wire it runs exactly the same as it does when connected meaning it is not running on that cylinder. if i pull the injector clip the car stalls out and dies.

 

obd0 or obd1 in your car?? which ecu ?? obd0 have injector resistor, make sure it was wired right, to injectors and to ecu. you can check if there power to injectors by unplug it and check it with a voltmeter.

 

plus make sure have spark when you pull spark plug, if no spark, check wiring distributor to ecu, obd0 distributor use obd0 ecu otherwise have to be rewired, inside the dizzy was cam sensor and crank sensor, either sensor could be malfunction, this would make no spark to 3 cylinders