OP
williamhutchinson44
Bronze Member
- Joined
- Dec 30, 2021
- Messages
- 50
- Tractor
- Ford 5000, 8n sidemount, 4500 backhoe
Pulled that spring and plunger out, put cap back, pressure dropped to almost zero ran it for a few, put the plunger spring assembly back in pressure back pegged again. Feel pretty safe just calling it a bad relief valve/spring assembly. Hopefully they'll send it in soon. I don't wanna run it with high pressure or no pressure. I'm gonna lose out on my fain free week unfortunately. That's how she goes tho.Yes, with the plunger out it should dump the oil out the bypass passage, just be clear remove the spring and plunger but put the cap back on. Don't worry if the engine has zero pressure for a few minutes at idle, the N engines can and have run on as little as 5 lbs. at full load for years.
If the pressure does not drop then it is a blockage in the bypass passage, I don't really think this is the problem but it might help point toward something else.