Oil pressure 93 4.0

[Shturman]

so I did lifters on my 93 ranger 4.0 and I have zero oil pressure, I’m supposed to leave camping in a week and I only have a small budget and no ability to pull the engine, I’ve tried cranking with some diesel oil to see if it’ll loosen any blockages,

 

[franklin2]

What are you using to measure oil pressure with? I would get a mechanical gauge and temp plumb it in to check. I would not rely on the factory gauge.

 

[Shturman]

Tried a mechanical gauge and tried just having the port open and there we absolutely nothing

 

[franklin2]

I have never worked on one of those engines, but I think you still have a spot where the distributor would go? But instead you have a shaft and a sensor on it? I think that shaft is important, it does the same job the distributor did, it turns the oil pump.

Or maybe 93 still has a distributor? I would pull it or the sensor shaft and see what the gear looks like, and underneath where it engages the oil pump.

 

[Curious Hound]

 

[gaz]

@Shturman
When you swapped out the lifters, did you thoroughly clean the rocker arms, rockers and push rods? Those rocker arms are known to be COMPLETELY caked full of gunk.

Once you have the rockers and rocker arms completely cleaned (inside and out) you can further improve the engine's top end oiling ability by opening the oil holes by 1 machinists drill bet size, bevel/chamfer and buff out all the increase sized holes, pre lube with assembly lube or new motor oil. I use anti seize on the 6 rocker arm pedestal bolts, then torque them.

 

[lowspeedpursuit]

I agree with everyone here and in your first thread. There are basically 3 possibilities:

1. If you had the cam sync out, it's not put back in right. Bad timing / not spinning the oil pump drive.

2. If you didn't take the sync out, you messed up installing the lifters somehow. Blocked a passage?

3. Something failed totally coincidentally, but still in the same areas, like the gear on the cam is toast.