
I'm currently looking at a 1994 Hilux Surf, 1kz turbo, auto transmission.
The truck is in good condition for its age and mileage, no visible leaks, auto shifts well, engine and trans serviced regularly.
What I'm worried about is that it has done just over 300,000km and I've read that many 1kz's around that mileage end up needing cylinder head replacements...how common really are head replacements?
I test drive it yesterday and before I took it for a drive I took the radiator cap off and revved the engine (cold engine) and the coolant in the radiator didn't move at all, would that be because the engine hasn't warmed up yet so coolant hasn't started to flow, or because the radiator is blocked or water pump isn't working?
I only had the cap off for about a minute and a half max and I'm beginning to think maybe I didn't let it idle/rev it for long enough?
thanks in advance
