Rightoh update time.
Brought the slasher back down with me, hooked it up and gave it about 45 minutes under a decent load, in high/heavy grass.
2nd low gear 1400rpm, not lugging, but definitely working.
It appears as if everything to do with the cooling system is good, precomp cover temps are pretty even. Block and head temps match, it appears radiator is too efficient as bottom radiator hose is well under top hose temp, but thermostat is doing its job and keeping everything at working temp.
However the slobbering out the exhaust port is still significant, it has lessened after its first hit out at operating temp for who knows how long, but it's still enough that I'd like to find out why it's doing it.
The head only has two exhaust ports, the front one is fed by #1 cylinder, this is the port that has been constantly slobbering throughout. The rear one is dry.
When I cleaned the block I had the fuel tank, etc off so thought I would swap #1 & #3 injector to see if that changed anything, it did not, however it could still be #2 injector at fault as it feeds the same port.
However my question is now, am I right in thinking its an injector?
I installed new nozzles and had the pop-off pressure set by a shop, so I should probably assume they are good, but I don't know where else to point the finger.
If I understand the pump guy correctly, the injector pump either works or it doesn't, it shouldn't inject different rates to each injector.
Injector lines aren't kinked and I have "cleaned" them with compressed air and carby cleaner.
All cylinders are above 360psi and head and valves are new.
There's not much left is there?
I've got it completely back together now, bonnet etc.
So pulling everything off I need to get to the injectors to swap #2 & #3 is a bit of work. Don't know if I'm better off just talking them all to another shop to re-check pop-off and spray pattern while I've got it apart.
But don't want to waste more time and money if someone can suggest something other than injector.
I've been running it without the exhaust manifold and muffler to better see where and when it's slobbering If that makes a difference to anyone's thinking.
Thanks