First let me clarify that this has been going on for a couple of years, and during that time I have read all topics on this forum of no-start, cold, warm, you name it I have read it.
The car:
1977 930 with 3.3 Pistons, and Ignition (counter-clockwise rotation, dual vac.) and all
The 77 CIS including 8-pin CDI with replaced internals with modern electronics by another vendor. Engine out all new top end service. The car runs great and it always starts.
Sometimes it will take just a touch of the key and it will start right up, cold or warm. Quick after a drive or after a couple of weeks parked it does not matter, if it in the mood it will start right up.
But 1 out of 3 it fells like it misses that sweet spot and you will have to crank it for several long no-start cranks until it starts. The amount of time it takes is completely random. It could be warm, or cold it does not matter.
What I have troubleshooted and replaced during the last 2 years.
1. Both fuel pumps and check valves.
2. Fuel Distributor and WUR set to Tony to repair and calibrate.
3. Removed MSD and replaced with CDI with modern internals.
4. New Distributor for 3.3 bottom end
5. New engine wire harness
5. Spark plugs and cables with proper OHM ends
4. New coil and coil wire proper OHM end
5. Ignition switch
6. Fuel Filter and New Fuel Accumulator
7. New high torque starter.
Ignition timing: I do not recall now, but we have verified several times and it is within specs.
Fuel Pressures: Also all values are in spec as per my WUR as per CIS Primer hand notes for Turbo Cars.
It is not a big deal because it always starts, but if really frustrating having this issue plus my SC starts right up every single time and it just feels good.
Any suggestions on what to try or test next, I ran out of options. The person that submits a suggestion or proper help to solve the problem will receive $100 via paypal as a token of my appreciation.
Merry Xmas!
Ivan
