Senior MTF Member
Join Date: Nov 2014
Location: Manitoba, Canada
John Deere 332 Compression
In my never ending curiosity I bought a diesel compression tester to test my 332's engine. The engine runs great, tiniest bit of hard starting when cold, but overall a great runner.
I use the tractor mainly to push and blow snow in the winter. I have found the 47" 2 stage snowblower can stall out the engine.
I tested the engine cold with the glow plugs removed and the fuel shut off disconnected.
All pretty even and I think the numbers are fine. The manual calls for minimum of 355psi with max difference of 70psi between cylinders.
Does anyone know what a good running or fresh yanmar 3TN66UJ would have for compression?