ExtremeDSM91
Probationary Member
- 17
- 0
- Apr 22, 2006
-
Layton,
Utah
Heres the run down: 91 gsx Bought the car as a rolling chasiss in 03, has ran 2 times with issues.
Rebuilt from ground up, rebuilt motor/head, lots of new parts. the car ran fine about 6 months ago, the timing belt jump a tooth and broke valves and damaged piston, I rebuilt the head again and installed a new piston, reinstalled it using only oem timing stuff all new parts. timed correctly by my mechanic dsm friend, everything worked before.
I have checked and rechecked every connection, I am getting fuel but no spark... Power transistor is good, bought a new one anyways no change. the coil pack is a little out of tolerance, but not a lot, I have two and the original one DID work. I have two different CAS' and they were both tried w/ the motor at TDC and the cas timed, all coolant sensors were changed to new ones (just in case) after the rebuild. the ECU should be good, the light comes on for 5 seconds and goes out and the boost gauge goes to 0.
It cranks and sounds like it wants to, maybe a few kind of popping noises (2-3) i am not sure that is spark or not. it smells of fuel, and the spark plugs are black. but when I try to spark check them to a screw driver I get nothing. I have not done a compression check (I dont have one) nor have a logger so I dont know if the coolant temp sensors are working or sending the right data to the ecu.
any help would be greatly appreciated, I have been struggling with this problem for months, if it was easy I would have found it. I dont want to spend huge $$$$ just swapping parts in the hopes it might work, anyone know any other checks I can do? I have read all the posts similar to this and still no help. thanks.
Rebuilt from ground up, rebuilt motor/head, lots of new parts. the car ran fine about 6 months ago, the timing belt jump a tooth and broke valves and damaged piston, I rebuilt the head again and installed a new piston, reinstalled it using only oem timing stuff all new parts. timed correctly by my mechanic dsm friend, everything worked before.
I have checked and rechecked every connection, I am getting fuel but no spark... Power transistor is good, bought a new one anyways no change. the coil pack is a little out of tolerance, but not a lot, I have two and the original one DID work. I have two different CAS' and they were both tried w/ the motor at TDC and the cas timed, all coolant sensors were changed to new ones (just in case) after the rebuild. the ECU should be good, the light comes on for 5 seconds and goes out and the boost gauge goes to 0.
It cranks and sounds like it wants to, maybe a few kind of popping noises (2-3) i am not sure that is spark or not. it smells of fuel, and the spark plugs are black. but when I try to spark check them to a screw driver I get nothing. I have not done a compression check (I dont have one) nor have a logger so I dont know if the coolant temp sensors are working or sending the right data to the ecu.
any help would be greatly appreciated, I have been struggling with this problem for months, if it was easy I would have found it. I dont want to spend huge $$$$ just swapping parts in the hopes it might work, anyone know any other checks I can do? I have read all the posts similar to this and still no help. thanks.