Subject	No spark issues. firing on 3 cylinders
Posted by	akdawgg99 on November 05, 2011 at 11:49 AM
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Message	First off -Brand new EFI harness (from concept z) -Old injectors -Old coil packs Cylinder 3, 5 and 4 are not firing. I determined this by pulling the connectors to the coil packs and the idle did not change. Injectors are working as far as I can tell (I listened to them with a screw driver and there is fuel on the plugs). The plugs that are firing are COVERED in black soot. I tried swapping coil packs, but the problem doesn't go with the pack, it stays at the cylinder. Does this mean bad wiring?? Its a brand new EFI harness (bought over the summer, just got the engine running a few weeks ago). Could it be the ECU? I know my CAS is good as well as my PTU.
Follow Ups	No spark issues. firing on 3 cylinders - akdawgg99 11:49:06 11/05/11 How about the PTU sub-harness? (n/m) - Draker (Eugene, OR) 12:05:52 11/05/11 got the PTU and sub-harness from Bernie - akdawgg99 12:14:59 11/05/11 Then it's probably good. - Draker (Eugene, OR) 15:52:46 11/05/11 No, nothing changes. (n/m) - akdawgg99 19:33:09 11/05/11 Sorry buddy I'm at a loss (n/m) - craigz96tt 19:36:41 11/05/11 Check ground pack on rear of pass side plenum (n/m) - craigz96tt 18:18:26 11/05/11 Ground is good. I have an extra ground to the neg terminal (n/m) - akdawgg99 19:32:17 11/05/11 Sorry it's cyl 2, 3 and 5. Cyl 3 is getting fuel and spark - akdawgg99 19:37:00 11/05/11 Video and picture. Plug was brand new, never used. - akdawgg99 21:04:55 11/05/11 Appears to be the wrong spark plugs. - Woody75 (Denver) 15:58:49 11/07/11 I will be OHM testing injectors and changing plugs this week - akdawgg99 12:13:02 11/08/11 I meant engine/CAS timing. (n/m) - Woody75 (Denver) 13:26:52 11/08/11 Sorry.. Yeah I have set the timing also. 15* BTDC (n/m) - akdawgg99 14:29:15 11/08/11 Move the EFI harness ground from the balance tube back - Samuel (Dallas) 11:54:12 11/09/11 That would be amazing if that does it - akdawgg99 16:31:18 11/09/11
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