Ok - I've searched the Tech forum for a similar problem as mine with no results so hopefully someone can help diagnose the issue.
Symptom:
- Starts fine
- drive for a few miles and then the engine starts loosing power
- Tach does not suddenly drop to zero but a gradual decine in power
- As i step on the gas pedal car does not want to go and sputters a bit
- pull off the side and place in neutral and engine does not hold idle and dies
- attempt to start, it turns and starts but does not hold idle and dies
- I wait for a minute and try again and it starts and holds idle and i proceed to merge onto the freeway
- I feel a sputter as I accelerate like its deciding whether to loose power or not
- car drives find for another 5 miles and then starts to loose power again so I repeat the starting sequence again.
- there are times when the car starts and I keep revving since it won't idle and the engine is running rough
Car specs:
1969 911T, original fuel tank never removed or internally cleaned, webers newly rebuilt, original Bosch CDI box, new plugs and wires, rebuilt Bosch distributor, new points/cap/rotors, all visible fuses are good, both batteries are new and grounded well.
My amateur diagnosis:
- fuel starvation from a going bad fuel pump?
- going bad Bosch CDI box?
- rust/dirt from fuel tank?
- bad relays?
- bad tach?
Thanks in advance
