Greetings,
I have a ZA in need of some engine work. The flywheel starter ring needs to be flipped/replaced as this will require splitting the tractor I did a compression test all cylinders between 110 and 125 psi. Unclear if issue is with valves (no valve suck sound) or Pistons/rings. When running has good power. Just beginning to blow blue smoke, not all the time usually when the engine lugs down. Only #4 spark plug was oily rest dry..
Not setting out for heavy use. Moving wagons/choring/feeding -easy to get on and off of big enough to do something with. I installed Pertronix ignition and it starts just like a new one.
My guess is that while split should look at rings and valves and make decisions from there. Might be an opportunity to put in hard valves for unleaded fuel. Usually I go through Welters for parts.
Any advice is welcome
I have a ZA in need of some engine work. The flywheel starter ring needs to be flipped/replaced as this will require splitting the tractor I did a compression test all cylinders between 110 and 125 psi. Unclear if issue is with valves (no valve suck sound) or Pistons/rings. When running has good power. Just beginning to blow blue smoke, not all the time usually when the engine lugs down. Only #4 spark plug was oily rest dry..
Not setting out for heavy use. Moving wagons/choring/feeding -easy to get on and off of big enough to do something with. I installed Pertronix ignition and it starts just like a new one.
My guess is that while split should look at rings and valves and make decisions from there. Might be an opportunity to put in hard valves for unleaded fuel. Usually I go through Welters for parts.
Any advice is welcome