S13 sr20det running on two cylinders

[Smokedogwest]

Rite I've got a 91 s13 sr20det just installed a g4+ s15 ecu set it all up and every thing checks out .we set timing up and trigger offset now it will start but only running on two cylinders .do I need to swap jumpers on board and /or swap ignition wires 1 and 2 .any ideas cheers

[Rich RDE]

Hi Smokedogwest,

Take these steps and you should be good to go!!

 

[Smokedogwest]

Sweet will we need to set up timing again you think

[Rich RDE]

You will always want to verify timing before tuning. Lock@ 10 deg. and then change offset to match crank timing if needed.

Hope this helps. If you need any other assistance let me know.

- Rich RDE

[Smokedogwest]

Cool thanks 

[Simon]

Given you have a G4+ you will not need to do the wire/pin change.

The jumpers will be all you need to try.

 

[Smokedogwest]

Tried swapping all jumpers around ended up with no tacho and no 3/4 coil packs. Swapped them back now have all coils ,injectors  and tacho now but still running on two.could it be fuel?brand new 1000cc injectors 

[Simon]

Now it will be a case of using the ignition test and injector test functions. With this you can check each drive and hopefully isolate the problem coils or injectors.

Also check the firing order is correct in the ECU set up.

[Smokedogwest]

Sweet thanks for your help. Got car running still not hundred percent revs ok around 2000 but not any where else did some logs can't see any thing really . I'll  just have to wait for my spot on the dyno  next month cheers Aaron 

[JMP]

does it work fine on the stock ECU?

I did a SR recently where it was running really poorly, turned out it had lifters which wouldn't bleed down and were holding valves slightly open, verified with a compression test and then leakdown test.

[Smokedogwest]

hi old ecu wont run 1000cc injectors or map or iat sensor and other stuff so i cant try that and i just spent 10k on motor so hopefully its not the lifters but you never know thanks anyways think ill leave it to the tuner to sort out.

[JMP]

if it's a new build I'd definitely be checking the compression as those stupid lifters are problematic