No spark from coilpacks

[dazjb]

Hi all. Having some problems trying to get a spark from my EMU at the moment. I have a 6A13TT Mitsubishi VR4 2.5l V6 engine which runs wasted spark, sequential injection and has the firing order 1,2,3,4,5,6

The ignition distribution control is in this picture ...




My ignition settings in the EMU software are like this ...





I have also attached a scope file so you can see the triggers. I have checked the injectors and seem to be getting fuel out of them but no spark from the coilpacks

Can anybody see anything I may have got wrong with the settings? Any help appreciated.

Thanks

[Jadzwin]

If there is a fuel there should be a spark.

In new firmware there is output test function so you can easily check if you coil config and electrical connections are ok


You can find the software here:

www.ecumaster.com/tv

[RHD]

Yes the new test function is great!!

we have already solved both an injector problem and a weak ignition problem in 2 separate occasions, both would have been very hard to find causing much frustration had it not been for the test feature!!

[dazjb]

Thanks for the info. I have upgraded the firmware (agreed, the test outputs function is great and works a treat) but i am still not getting any spark when testing.

Today I also changed the ignition output wires to outputs 4,5,6 to see if that helped and altered the EMU software accordingly .. still I am not getting any spark.

I have the 'Coils Type' selected as 'Coils without amplifier', could this be incorrect? The coils have no external ignition module and were wired direct to the old standard ECU. They have 3 wires going to them (+12v, ground & signal from EMU). I have checked that +12v and ground is good at each one. They look like this ...




Or could it be possible something is wrong with the EMU?

[Jadzwin]

Do you have spark when you use test output function ?

[dazjb]

No, there is no spark when using test output.

If I chose 'coils with built in amplifier' in 'ignition outputs' just to see if I get a spark while cranking for a second would it cause damage as it says in the manual to the coils or EMU? My coils don't have an external amplifier but there may be one inside the actual coilpack.

[ihiryu]

Okay, so you have a wiring issue. If you test the output, it should spark it for a second. f

[dazjb]

The wiring is straightforward having only 3 wires per coil. I have checked with a multimeter and I do have IGN +12v and Ground at each coilpack. I have also checked continuity of the wires from the coilpacks to the EMU and it is all good.

Heres the wiring diagram for my coilpacks ...

[Adamw]

According to the schematic above your coils have built in amplifiers so you need to select that in the emu software. If it still doesn't work after you change that setting then you have possibly damaged the coils by trying them earlier with the wrong setting (they quickly overheat when set wrong).

[dazjb]

Thanks for the info. I was just looking at the diagrams and was wondering whether the transistors in the coilpacks meant I should have chosen the 'Coils with built in amplifier' option. I can change it over in the EMU software and crank it over tomorrow to see if I get a spark.

If the coils are damaged I can get another set fairly easily .. as long as i dont damage the EMU, thats the main thing.

[dazjb]

Result! Swapped the setting over and I now have spark . Tested the injectors and they're all firing in sequence too. I can now check the timing then put things back together and get down to firing it up and sorting the idle out.

Thanks for the help