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Resolved Evo 2 cranks/no start. Backfires

Evo_3

Proven Member
33
23
May 5, 2021
London, Europe
I've been having some trouble with getting my evo 2 to start.

It's a built motor with k20 coil on plug and play kit. It sometimes starts but sounds very rough and like a miss fire, but now it doesn't start at all. Every time I would crank it would backfire through the exhaust and Intake manifold.

Things I've checked:
New k20 coils
New NGK spark plugs
Timing is OK
Has spark and fuel
Fuel pump is good (400lph swirlpot setup)

Cars been down at a garage and they haven't been able to start it either, was told its a wiring issue somewhere and maybe the COP kit but I've no idea.

Has anyone experienced anything like this before? I am looking to go back to normal ht leads set up and see if that helps in the mean time

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Solution
Issue RESOLVED!! After months of trying to sort the car, I dropped it off to my mate who solved it in 10 minutes. The issue was in the tune, Ign angle on the map @ idle was -8

AWD-Tony

Supporting Member
6,654
3,522
Sep 11, 2017
Cincinnati, Ohio

motomattx

10+ Year Contributor
3,720
1,466
Dec 9, 2010
wampum, Pennsylvania
Im figuring that since they are smart coils that he is just running them in waste spark from the ecu's two ignition channels.
 

Evo_3

Proven Member
33
23
May 5, 2021
London, Europe
I remember that the car was idling in the video in his another post from a couple of month ago.
What exactly have you done since you took the video? Have you made any changes?
It was idling yes but was still not running too good. Sat in my garage for a while now it's having trouble starting. I'm going to double check the timing again and go from there
 

steve

DSM Wiseman
14,714
1,587
Feb 3, 2002
Boulder, Colorado
Im figuring that since they are smart coils that he is just running them in waste spark from the ecu's two ignition channels.

I don't have a Link ECU or the manuals so I don't know how many coil outputs it has. I did some work to one a long time ago but they aren't very common.
 

motomattx

10+ Year Contributor
3,720
1,466
Dec 9, 2010
wampum, Pennsylvania
I don't have a Link ECU or the manuals so I don't know how many coil outputs it has. I did some work to one a long time ago but they aren't very common.
If its the one that I run thats plug and play for the 1g, it wont have enough outputs for four individual fired coils, there is only three available ignition outputs that are not in use already for other things, thats why I was guessing that he is batch firing them, unless he has a wire in version of their ecu or somehow is not using the other outputs.
 

Evo_3

Proven Member
33
23
May 5, 2021
London, Europe
Issue RESOLVED!! After months of trying to sort the car, I dropped it off to my mate who solved it in 10 minutes. The issue was in the tune, Ign angle on the map @ idle was -8
 
Solution
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