1Nzfe Coils Fire Only When They Want To

[Damon550]

so i put 1nzfe c.o.p's on my bigport 4age gave them power and earth and trigger from the Haltech sprint 500 ecu

set the ecu to direct fire

for some reason the coils don't fire all nice like they should

they fire when the ecu switches on some strange thing that haltech does

generally it makes the car backfire with the excess fuel from cranking before hand

then when its cranking it only fires ever now and then

when i turn the key off it coffs and splutters like it wants to go

 

i have double checked all my wiring and dwell I'm running out of ideas

 

could anyone shed some light on my problem?

Edited March 18, 2012 by Damon550

[ae824ate]

Stock ecu?

[Damon550]

haltech sprint 500

[Damon550]

i wired it up in wasted spark and it sounds happier.

then while in wasted spark i set it to direct fire and it nearly ran.

haltech says wire igntion 1 up with cylinder 1 so on and so forth

 

I'm getting a strange suspicion that is needs to be wired up in firing order

[Damon550]

got it running direct fire but the firing order is 3 1 4 2 looks like the dizzy wheels are 90 degrees different

 

the mark on the 24 tooth wheel is pointing at the sensor when dizzy is pointed at number 3

 

i added a photo to try and explain

 

is this normal?

[MYSTIK[RL]]

firing order should be 1 3 4 2.

 

is the 24 tooth wheel in good condition ie all the teeth proper length, none chewed away?

 

we had the similar sort of problem with the CAS of my gze, only the the firing order was out by 60 degrees due to a couple of the teeth being chewed away. so the ecu was only reading 22 of the 24 teeth.

 

also using a PS500 from haltech.

 

there is a diagnostic tool on the haltech, which might shed some light on your problem, i do believe it is in one of the drop down menus.

Edited March 19, 2012 by MYSTIK

[Damon550]

i may have it sorted

the forums recommended about 70 degrees trigger angle and 5 tooth offset this worked fine with the dizzy

the 5 tooth offset makes it fire on the next cylinder so i set it to 0 and that brought it back to cylinder 1

then used a timing light and to find out what trigger angle i needed to get it back to 10 degrees advance which ended up being about 47 degrees

 

i hope i don't pop anything with these settings see how it goes tomorrow but all sounds happy

 

anyone know what settings i should be running?

Edited March 19, 2012 by Damon550