My 2nd generation Toyota Hi-Ace Diesel is not starting easily, or occasionally not starting at all.
I have: Tested the glow plugs - all quick and fully bright; Changed battery; Changed the air filter; Changed the fuel filter; and Run Liqui-Moly injector cleaner through, and added Liqui-Moly to diesel.
I think the outside temperature is having an effect but need to be able to overcome this. My next step is to install new glow plugs in the hope that there is some undetectable fault with the existing ones. Is this a good idea? Or are there any better ideas out there? Thank you in advance.