Engine running at ATDC
I bought a 1978 Chrysler LeBaron with a 318 V8 engine. I bought this car from the original owner and the car still had the “Lean Burn System” which left me stranded when I tried to take the car to the transmission shop to repair the automatic transmission. Once the car was back at home I already had the electronic system from Jegs (ECU, Distributor and Wiring Harness) to replace the Lean Burn System. Before switching to the new ignition system I wanted to check the engine time and it was running close to 30deg ATDC , I blamed the “Lean Burn System” , which controls the time, for how rough the engine was running.
I made sure that my #1 was TDC at compression, mark on damper was right on 0 deg. And I installed the distributor with rotor pointing to #1 tower. Engine started with 2 or 3 cylinders, backfiring and only after I rotated the distributor clockwise and damper mark was again in the range of 30deg ATDC all the cylinders fired, any time I try to bring the time close to TDC it just stall. I have the shop manual for the car and It shows engine must be timed at 16deg BTDC.
I have been thinking that probably the timing chain has jump some teeth, what do you guys think about this problem?