Freelander 1 Bad Idle & grey smoke - Opinions Welcome.

Got injector pump out today. As I need to sort thermostat as well, I drained coolant & remove the various hoses at the front of the engine.

Cleaned the pump exterior of the years of oil, dirt & grime, and then took the regulator off. Both rubber & plastic o-ring not looking their best. Wondering what impact these have on the fuel regulation ?

Should there be an o-ring in the slot next to the regulator body ?

Pump seals will also be done this week.

Update: The other day, I replaced all the injection pump & regulator seals. New fuel rail sensor as well. Re-sealed the power steering pump & cleaned up loads of oily gunk all over the pulley's, aux belt, etc. Replaced thermostat. Exhaust still really smokey, but at least engine gets up to temperature now.

Today I tried each injector into a jar with electrical plug disconnected. Number 4 leaking badly under cranking pressure, so swapped in a spare. Exhaust still smoking badly, but it does seem to run smoother.

Wondering if the re-conditioned turbo seal is failing on the exhaust side of the turbine ? It's about 3-4 years old. No signs of oil coming up towards the intercooler though. MAP goes from about 100kpa up to 130-140kpa when I rev it hard.

Also with the inlet manifold off, there's lots of grey smoke coming from the EGR feed. As this is taken from the exhaust manifold (before the turbo), it still seems to me like an overfueling issue ?? Could this simply be tired injectors putting too much fuel into the engine ?

Opinions welcome . . . . .

Pete