Massive Oil Leak

Does your Mitsubishi L300 make a strange noise? Need wheel alignment specs?
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javabob
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Massive Oil Leak

Postby javabob » Sat Jun 09, 2018 10:14 pm

As I was backing into my garage I notice I was leaving a trail up the driveway. Looked at the instrument panel and everything looked normal. I thought maybe it was water from the rain we had earlier, there was a puddle at the end of the driveway. I walk around the van and it looks like BP had parked the Deep Water Horizon in my garage. I took a quick peek and it's coming from the drivers side, in the area of the oil filter. It's really bad timing ( is ever good timing for this kind of thing? ) as I went back to school and am putting in around 84 hours a week. So, in the sporadic 10 min of free I get occasionally, what should I look for?
Oil Leak (Phone).jpg
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A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

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Growlerbearnz
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Massive Oil Leak

Postby Growlerbearnz » Sun Jun 10, 2018 12:31 am

Quick, move to Beverly! Hills, that is. Swimming pools, movie stars...

Usual culprit: pressurised flexible oil feed to the top of the vacuum pump, or the un-pressurised drain from the vacuum pump back to the sump. Both easy to replace without removing the alternator.

Slightly scarier possibilities: Oil feed to the turbo (unlikely, as it's all steel), turbo drain (more likely as it's just a piece of rubber), oil feeds to the oil cooler (they wrap around the oil filter- also all steel so fairly unlikely), loose oil filter (never seen it, but surely it must be possible?).
Nothing says "poor workmanship" more than wrinkles in the duct tape.

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javabob
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Vehicle: 1991 Exceed (P35W)
Location: Minneapolis

Massive Oil Leak

Postby javabob » Sun Jun 10, 2018 8:27 am

And then one day he was drivin home his van,
And down from the engine come a bubblin crude.

Oil that is, black gold, Texas tea.

Yay Growler! Perfect timing with the humor, thank you. I'm guessing you could feel my stress from the upside down.

I'm gonna go with one of the flexible hoses until I can look at it, it takes some stress away. The one that goes to the bottom of the alternator has always been kinda soupy. Plus I have one of those laying around! I'll report back once I've dug in.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

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Growlerbearnz
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Massive Oil Leak

Postby Growlerbearnz » Sun Jun 10, 2018 3:53 pm

A just-about-asleep thought from last night: oil pressure switch. They've been known to asplode. Follow the single yellow(?) wire from the alternator loom up onto the engine.

Fingers crossed for that one, because they're much quicker to find than the vacuum pump oil feed. (MD050196 CAD$30)
Flexible_Oil_Hose.jpg
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Nothing says "poor workmanship" more than wrinkles in the duct tape.

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javabob
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Vehicle: 1991 Exceed (P35W)
Location: Minneapolis

Massive Oil Leak

Postby javabob » Mon Jul 09, 2018 7:01 am

I finally had some time to replace the the vacuum pump oil feed line. That top banjo bolt was so much fun!
Put fresh oil in, started her up, and sploosh, all the oil I put in came gushing out :-(
When I crawled under to have a looksie, it seems like it might be coming from the top side of the filter. Next week I'll put some more oil in and have a friend start it up while I'm under it to see if I can pinpoint it. Cant wait for the oil shower!
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

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Growlerbearnz
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Massive Oil Leak

Postby Growlerbearnz » Mon Jul 09, 2018 2:10 pm

You're going to have to remove the driver's seat engine cover and have a look. A large leak from above the oil filter sounds like one of the oil cooler hoses: hopefully just a loose banjo bolt, but who knows.
Nothing says "poor workmanship" more than wrinkles in the duct tape.


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