The engine is lifted out from vehicle. It's a non turbo from a Volvo 240 if someone wonders.
I changed fuel filter and put a primer pump from a boat fuel tank and squeezed the primer to spare the starter.
It did work after some treatment with some ATF oil and diesel additive mixed in the diesel and running on idling for a while.
Was sitting for like 15 years. First it did not start. I did check all glow plugs and cleaned all ground and plus contacts then it started within 5 seconds. I'm surprised how easily it did start and run.
