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Burst oil line

O

OrionThade

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Location
Orem, Utah
So I was driving down the road this evening and noticed that my after-market oil pressure gauge was making its way to 0 PSI, followed my slowly by the stock gauge.

Pulled over to the side of the road and found a spray of oil underneath the truck. Opened the hood to find oil mayhem. Then I spotted my worst nightmare: the braided hose that came with my Amsoil bypass kit had burst.

!@#$%^&*

Luckily I broke down just a few miles from Paveltolz's place, so my dad is on his way to give me a tow and I'll park it for a couple of days until I can it fixed.

I'm not a happy camper. I'm going to take some pics of it, then pull the lines. The burst line is not in a place where I would have been concerned about sharps and is not anywhere near the fittings. It is right on the bend for the hose, but the bend is not outside of the allowable radius.

I'm going to inspect the hose after I get it off and I may call Amsoil to see what they'll do if it looks like the hose is defective.

I don't know what happened. I just inspected the hoses less than 800 miles ago when I was replacing the front end. The routing is a bit awkward the way I had to install them, though in hindsight I would have done them differently.

I don't think I did any damage to the engine. I #$%^& hope not because I'm not pulling the engine in this again.

The plan for now is to fix the hose and fill with cheap stuff. When I checked the oil level, it was just barely registering on the dipstick and the stock gauge was still showing oil pressure when I shut it off and my lift pump was still running.

Being that I used -10AN fittings on everything, what I may do is remove the oil cooler lines and plug them, then run the hose from the bypass adapter to the oil cooler to the filters and back to the bypass adapter, although admittedly I'm not sure what the stock routing is: Is the oil filtered pre or post oil cooler?

I'll post pics of the carnage when I have them.
 
Oil is filtered post cooler, standard pathway is from the pump, to the oil cooler, to the filter and then to the engine galleries . When you plug the oil cooler ports you are effectively relying on the oil cooler bypass valve to still send oil to the filter and then to the engine. IIRC there are those that have plugged the oil cooler ports and run that way for substantial amounts of time. Personally not a permanent solution that I would choose.

Sounds like you caught it just in time.

Cheers
Nobby
 
you're lucky you seen the gauge drop,most people find out to late.
Personally i don't care for these aftermarket braid covered hoses.
Steel braided hydraulic hose and hydr hose ends is a much better choice IMO.
single braid are good for 2500 psi and flexible enough to get them in there ..with the right fittings.
It might be over kill but they are foolproof.

just my 2c
 
After looking at it with the hose off, I think it was just a series of unfortunate events that caused the line to burst.

When I put this back together last fall, I had to be creative with the oil filter lines routing ... essentially running the hose along the oil pan out the front of the motor, over the steering gearbox and back along the frame rail. I knew it wasn't ideal, but I needed the truck on the road and didn't want to spend the extra time and money on having some hydraulic hoses made with a 120* fitting that immediately run backward to where my filters were. It ran fine like this for nearly 10K miles

Add to this the fact that I just replaced the gearbox, which meant I had to slide the protective cover up the steering shaft to get it disconnected from the gear box. When I put it all together, I slide the cover back down where it was supposed to go. What I think happened is that I must not have slide it down quite far enough and the one hose worked it way under the cover followed by the other hose. When the 2nd hose was able to, it took the path of least tension and came to rest on the joint of the steering shaft which has some sharper edges. Fast forward 600 miles or so and the turning rubbed through the cloth/nylon braid and then wore through the rubber until the oil PSI was enough to cause the hose to burst.

The plan on friday is to temporarily patch the hose I have. The hose is the same that comes with the Amsoil bypass kit, but they didn't send me with enough hose. They sent 16' and I needed 18'. I had the 2nd hose made at a hydraulic shop.

I'll cut off the bad section of hose and put the 2 remaining fittings I have from Amsoil then get a -10AN female to female adapter and patch the hose. I'll hook both hoses back up temporarily and fill the engine with cheap Delo 400 and start the truck. I'll let it idle for a bit and listen to the motor to make sure that sounds fine. After that, I'll remove my oil filters and drain the oil, looking for metal. If it looks clean, I'll go these hoses modified with a 120* fitting and reroute my hose placement. I suspect I'll lose between 1/2 and 3/4 of a quart of oil capacity. I wish I didn't but what can you do?

I'm really hoping that this engine is fine. I want the truck to last me a couple of more years. If not, I'm expecting a sizable bonus from work at the end of the year ... so a D-Max will be in my near future.
 
How to tell there's a 6.5 visiting....Sorry Orion, couldn't help myself.:D

Blown line bleeding out after stopping.
IMG_1670s.jpg

Waiting on repairs at the house.
IMG_1680s.jpg

Plenty of oil left...
IMG_1683s.jpg

He got it running with the spliced hose and it sounded as healthy as one could expect. :thumbsup:

I'll let him tell his side of the story later.
 
Well dang it all. I thought I double posted earlier, but I guess not. Here's what I thought I posted:

Praise Flying Spaghetti Monster (all hail his noodly appendages).

She is running like a champ. I had some new, shorter hoses made today with 90* elbows. Each hose is about 3 1/2 feet shorter than the originals. The benefit is that the oil lines now run to the rear of the truck from before the motor mounts, rather than after and then up and around.

Losing about 7' total of 1/2" ID hose probably cost me 2 quarts of oil capacity, but I feel better with how the hoses are run now.

A big thanks to Paveltolz for letting me park my rig at his place for a few days.
 
Excellent! Glad that this wasn't a death blow to the engine. I agree great timing in looking at your oil PSI to notice it drop!
 
I'm glad I got into the habit early in my driving career of checking my gauges frequently. In fact, I don't have enough gauges for my tastes. I don't like not knowing exactly what my drivetrain is doing.

I generally do a visual rotation every couple of minutes of my mirrors, my blind spots, the road in front of me and my gauges. My wife has made fun of me several times about it because my eyes are always shifting and she thinks it looks funny. But this practice has saved me from several disasters. I wish I had been paying more attention during this incident ... I had a friend in the truck and we were talking, so I actually hadn't checked my gauges for a second. On top of that, unfortunately my 2nd oil pressure gauge is a cheap one that sometimes is a bit flaky, so I ignored the pressure loss until I started to see the stock gauge dropping, then I pulled over and shut off as soon as I could.
 
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