It ran well until I accidentally overheated it. Who knew the flashing temperature indicator with the needle at normal temp meant that coolant level was low... The old head was cracked between the valves too, so that's bad news. I found a used one for $40 which turned out to be great. When I took her into the shop for throwing coolant out, they diagnosed it's either a broken gasket or a cracked head. They took it to be x-rayed and it turns out it's cracked, leaking engine compression in the cooling system. This was also evidenced by the water hoses becoming rock hard when you turn the car on. This has been fixed.
@vanbcguy, the oil pressure seems to be 'very low' once the car starts up, with the oil light staying on for about 1-2 seconds after the engine starts. After it goes off, it does not come back on until the engine is at operating temp. Now come to think of it, it did it before the head switch too, but only once, so I didn't pay too much attention to it. Could it be that my oil pump needs to be replaced?
we can do that, do you have your own dial gauge and some way to lock the cam?
It's going to have to wait until I get a gauge, then. There's this old guy who works on diesels nearby. I might go see him until I get all the equipment I need to time it myself.
I believe the OP is on a country that probably won't be frequented by a Snap-on truck particularly often... 😉