Need more help.

I have a 76 2.0 d-jet.

Engine runs fine when first started, after it warns up it starts surging (Jerking) around 3500 rpm's. What I have done so far.

- Adjusted valves
- Replace Fuel Pressure Regulator
- Disconnected TPS, Problem still exists when disconnected.

Idles nice at 900 rpm's

Any ideas on what else to check?

Thanks Irv.

Is that jerking at 3500 rpm while then car is stationery or while going down the road. If while driving, its probably a worn out TPS.

And can you pass thru 3500rpm; if so does it smooth out?

It does not seem to smooth out, Although I have not really spent much time pushing it past the point of surging. I will give it a good try tomorrow.

Check the mechanical advance on the distributor.