I agree, but i'am not talking about bigger lift pump, but bigger pump rotor(high presure side - plunger/piston is bigger diameter). It's very common pratcice for bosch VE pump tuners(VAG's etc) to fit bigger head and rotor. More fuel is injected in the same time/one pump plunger stroke. Stock...

11mm zexel pump head(M51 is 10mm) from Nissan patrol y61 2,8 td6 (RD28ETi). Theoretically gives 21% more fuel at all conditions. New from BOSCH/ZEXEL is stupidly cheap(around 100 Euro retail price).

Bosch needs twice the time to reach the same temperature, tested it few years ago. Mine with beru plugs and bigger pump element starts with first turn even at -18 deg Celcius and 80% timing modulation - too lazy to correct it. :D

Overall P38 is better car than D2, way simplier and mechanically, no rust and if it's diesel - cheap engine to replace if anything happens. And way more comfortable. Electronics are not a problem if it wasn't flooded or involved in accident. If diesel - get the one without EGR and MAF, just...

BERU glow plugs are white hot after 5 second. Check voltage loss between engine and negative battery terminal, anything over 0,01V is too much. Replace or add new earth strap with thicker wire, stock is very bad quality and cleaning it will not help.

No more than 0,5 bar on diesel. 3 bar pump will add 3 bar to the internal injection pump case pressure messing injection timing. Been there(with aftermarket eurospare pump dedicated to diesel), seen it on manometer, a bit strange when you see over 12-13 bar at high revs. Too much pressure can...

You may be right. :D

Been running on 10W40 for many years, swapped for 5W40 and it's sooo much better and quieter.

Don't use calibration on Hawkeye - it will reset all height settings to emergency values, which are very odd and high. It's pretty much useless device on P38.

Before you replace injection pump, check shutoff solenoid wire - they just snap giving the same symptoms.

Advance pump timing slightly.

Weak point on all diesels with indirect injection is between intake and exhaust valves, all of them crack there(big temperature difference). The newer ones with those steel inserts does not crack there, almost always only a head gasket/lifted head is a problem.

Buy the newest you can find, those from 1998 and newer have steel inserts between valves to prevent cracking.

Cabin temperature sensor fan sticking.

Weak earth?

I am using yokohama geolandar I/T+ for winter driving - very happy with them, brilliant even on hot tarmac. Very predictable.

Braking is hopless on snow without winter or at least good AT tires. Driving permanent 4 wheel drive vehicle on snow without good tires is dangerous, as it starts off the line very good, but stopping in a hurry becomes a problem.

Check engine coolant temperature sensor readings with proper diagnostics, gearbox warm up mode should only be activated when engine is really cool, below normal temperature zone on guage.

Injection timing!

Start with draining water from air tank.