Question about Cars & Trucks
The hydraulic oil maker is low and the engine oil overflows from an overflow pipe.
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Posted on Jan 02, 2017
SOURCE: oil leak
This is a maddening problem if you don't know what's going on. If it's like my 92 isuzu pickup with 2.3 litre engine, it's a vent line coming out of the fuel pump which will spit oil out. I had a very hard time figuring out why but finally read that there is a galley in the block where oil runs back to the oil pan. If it gets clogged, oil will come out the vent line of the fuel pump. I even took my head off and tried blowing compressed air and sticking various wires through the block holes near where the fuel pump mounts. Nothing did any good and I was sick of the leaking oil and having to add oil so I bought several feet of oil resistant hose at autozone and routed it from the vent line, back over the engine, and into the dipstick tube. This worked like a champ. No more leaking oil. No more adding oil. Make sure you trim the outside of the hose where it goes into the dipstick with a razor knife or similar, so it will fit tightly. Make real sure you use oil resistant hose or it will break down and get into your oil. Not good. Then use a tie wrap to secure the hose to something else like the brake vacuum hose to keep it in place. I keep my dipstick behind the seat and make sure it's cleaned before and after checking my oil. This truck doesn't use any oil to speak of now and I wish I'd thought of this sooner. Short of removing the engine and having the block flushed and cleaned I don't know what else would have fixed this problem.
Someone else said to replace the fuel pump to fix this problem. I tried that. It did not work. It still spat oil out the vent tube to the tune of about one quart every 150 miles.
I also replaced all the engine seals and gaskets. Front and rear main seals too which were also leaking. So now my oil leaks are a thing of the past. Good luck!
Posted on Oct 12, 2008
either a leaky head gasket or someone put oil in the overflow, it happens, clean it out drain the coolant from the entire system and refill with new long life antifreeze, also add a can of good radiator sealer.
Posted on Mar 12, 2009
REMOVE RAD CAP AND RUN ENGINE AT 3000RPM WITH ALL HEATERS ON SOUNDS LIKE AIR LOCK, ALSO CHECK IF HOSES ARE HOT
Posted on Mar 30, 2009
Here is the way to find out pull your spark plug put out and bring each cylinder tdc and put 50 psi air in that cylinder remove radiator cap and check for bubbles do this to all cylinders,if no bubbles I would be checking to see if that engine has a oil cooler that could leak oil into your coolant,some mercededs had oil cooler,
Posted on Sep 30, 2009
Testimonial: "Thank you, will try. I was going to flush out the cooling system a couple time and see if I got oil again."
well if the rad cap is damaged in any way the pressure in the rad drops its like a pressure cooker, if you open it fast it boils up on you,,,big time! so there may just be a small leak there,,its well worth having a good look at this part first pluss any other pipes and joints if all is good it could be the head gasket starting to go this can be tested for with a sniffer test
to find out if there are any hydrocarbons in the water in the rad,, its an easy test,, if there are any the head gasket is going or gone,
Posted on Mar 03, 2010
Testimonial: "More than I expected - thanks"
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