Engine knock

[v8crazy]

I have a Farmpro 2420 With a Y385 engine I believe. Yesterday while pulling it into the barn it started knocking. It sounds like it was coming from exhaust at first then After I checked fluids I restarted it for a few seconds and it sounds like front part of engine like number 1 cylinder. It has about 350 hours on it. I am just wondering where to start. Is the oil pan hard to drop I have not crawled under it yet. I will try to post a video later today. Thanks

 

[jacques54]

V8crazy,
You didn't say how is the oil pressure? (React as it was before)
Do you ever adjust the valves and head retorq? (To be check first)

If ok, then start the engine and loosen and retight the injector line at the injector one after the other. The fuel should skuirt at the tube nut on each one.
Listen for sound change.
Knock stop on one cylinder then resume after tighting the injector Tube?
HOPE NOT.

It happen once on my tractor but stop after restart, fuel knock only.

Jacques

 

[mickstanz]

I would also be checking your valve clearances, hard to diagnose online but start there. I found this thread helped a lot to do valves. http://www.tractorbynet.com/forums/chinese-tractors/133397-valve-lash-adjustment-2008-jinma.html

 

[rustydollar]

If the color of the exhaust changed or bubbles in the radiator possible blown head gasket.