Oil leak after water pump failure

[toddsmith1]

Ok, so I was driving 1300 miles pulling a small camp trailer. The water pump gave up the ghost and top raidiator house just a few inches from the radiator blew apart. Big BOOM! I was watching my temps on a scan gauge the entire trip and no issues with temp until pump failure. I pulled off within seconds from the time it blew. I just happened to be on 95 in the middle of Maine, it was 8pm on a Saturday night and it was raining. Luckily, like real luck, there was a 4x4 repair shop less than a mile from where it blew. Owner happened to be in the shop that late on Saturday! So I left it with him and continued on with my journey.(My wife was following me). The shop replaced my water pump and alternator. Owner drove the truck for a week just to make sure everthing was working correctly. So, about a month later I was finally able to drive back to Maine to get the truck. On the way home I noticed oil was leaking. Popped the hood and oil was all over the engine. I finally made it home, but I stopped every hour to check the oil. Before the hose blew, I had NO oil leeks. I replaced the distributor after I replaced the oring, oil was dripping from the distributor. Cleaned everything up and oil is still coming from somewhere. Oil is all up underneath the battery box, on the coil springs and all around the fuse box and below. It seems that oil is "blowing" everywhere and it seems to be coming from the top part of the engine more than below. I know the two other typical leaks are the oil pump gasket and crankshaft seal, but i cant point it to either location. Unless the fan is blowing it up and over to the right of the engine.

So, long story over, has anyone experienced an oil leak only after the hose blew? I can change both the oil gasket and cranshaft seal, but I would rather not if it isnt the issue.

 

[Kernal]

Which model/year/engine do you have?

So you replaced the distributor O-ring after finding the oil leaks?

Is the oil fill cap tightened down (or missing)?

How does the coolant look ie: in the overflow tank (or with the radiator cap off), anything floating in it?

How does the oil on the dipstick look, normal oil color or milky?

Can you post up a few photos of your engine taken from a few feet away ie: wide shot, top, front, bottom (not just a close up of the oil leaks).
Take another photo looking down at the lower front of the engine showing the harmonic balancer and to your right of that.

 

[Old Nick]

If it is throwing oil onto the ds side of the engine bay, I'd guess that the leak is from the timing chain seal, or from the oil pump. If it's leaking at the front of the engine, it would definitely be possible for your belts/fam to be throwing oil to the ds side of you engine bay. BUT, that would be one big leak and indication of a failure in a big way.

The post above is spot on. Even if your temps didn't spike too much; after that long haul and towing, and the waterpump failure, it is possible that your head gasket failed. I sure hope that's not the case. Honestly one of my biggest fears with our 80.

 

[Brindleboxer]

Let's look at this objectively. Yes your hose blew and you had the water pump and alternator replaced but doing these repairs in and of themselves should not afford the opportunity to produce an oil leak. The leak may be coincidental to the event. The alternator is near the oil pump cover plate but should not have involved anyone touching the plate to do the R&R. IIRC there are some variants with an idler pulley through the oil pump cover but if yours does not have that it would not be an issue. If your does have the idler I would check around it as well.

You need to check and verify where the oil is coming from, clean the engine well and then look for leaks. If you cannot visually see where the leak is after cleaning up the area, get a dye kit and it will help show the path of the leak. You mentioned most of the notorious culprits for leaks on these engines so continue to look there.

Odd suggestion but did the shop do an oil change while they had it? If so, ensure there is not an old filter gasket left when they installed a new oil filter. Simple mistake but could lead to an oil leak and it is on the driver's side.
As you surmised, the fan and/or belts might be slinging oil to areas outside the leak location.

You say you noticed oil leaking, how did you notice? A puddle on the ground under the vehicle? Oil level light come on? Smelled oil burning? Also, how much oil are you using? If it is a lot, I would think the shop owner might have noticed for the month he had the vehicle and was "driving it".

 

[toddsmith1]

I replaced the head gasket about 15k miles ago. There is no oil in coolant, no water in oil, no smoke from tailpipe, truck has plenty of power, so I think the head gasket is ok. The mechanic who worked on it said he did not believe there was any issue with the HG.

When I picked it up, there was no oil leaking. While the mechanic did drive the truck, it was not at highway speeds pulling a trailer up pretty step inclines.

I smelled the oil while driving down the highway. Not buring oil, fresh oil.

I was hoping someone else may have had the same exact problem and had an easy answer, Lol.

Looks like I will be replacing the gaskets. Getting the crank bolt off is always a pain in the a$$.

 

[toddsmith1]

Also, I replaced the gasket on the oil fill cap.

97 Fzj80(actually an LX 450)

I have been working on these trucks for 20+ years, so I am pretty familar with how it is put together. Oh, it also has a turbo, and yes, I checked the oil lines to the turbo.

I will take some pictures and post of the engine.