dmross

Trying to start up the motor with the new shortblock, but I'm having problems. Injectors 2 & 4 won't fire - the engine is running on 1 & 3 and it's very lumpy. We can pull the injector plugs from 2 & 4 and the engine continues to run in the same way.

PowerFC seems to be fine, same map is still loaded. All 4 plugs still fire. Grounds all seem to be fine as well. Swapped cam position sensor with no difference.

Any ideas?

R19KET

Have you tried swapping the leads to see if you can get 2 & 4 to run ?

Mark.

dmross

They won't reach to the other side. We did swap the injectors. It seems to be a definite problem with the signal but I'm not sure how to test further. I checked fuelling - it's fine as well.

jaytc2003

iTrader: (1)

could possibly be sticking injectors, dont know how you can release them though.

Just re read your post, doh! its early, thats my excuse

P20SPD

iTrader: (1)

I think Mark means swapping the injector leads between 2 and 4, not 2 and 4 with 1 and 3.

are you sure its the injectors that arent firing and not the plugs/plug lead/coil pack (sorry cant remember which version you have now)

check your cam timing marks still line up properly

dmross

Took everything apart related to fuel & spark. Cleaned injectors, rewired grounds, cleaned out fuel rail. Put everything back together and it fired right up. Must have been a stuck injector or a loose connection. Onward!

Thanks for the suggestions.