Question about 1997 Honda Odyssey

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Rather severe oil leak from the area of the oil filter

Oil is leaking from the area between the oil filter and the engine of our 1997 Honda Odessy. there is a device there between the engine and the filter. It leaks from the arrea around the device.

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  • lklein4 Apr 05, 2009

    they were all good suggestions but i haven't had a chance to work on the Odyssey yet

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7 Answers

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I own a '99 Isuzu Oasis, which of course is really and '98 Odyssey with Isuzu nameplate. 214,000 miles, Cranked it up yesterday morning after 20 to 30 degree temps that night....took middle schooler to class approx 3-4 miles from home and approx 1/4 mile from home- noted severe burning oil smell in cabin and smoke from under hood.. Got it home and observed 3-4 quarts of leaked oil on the ground where I had been sitting just 15 mins before. Thought for sure I had ruined the engine after seeing all the oil in the gravel. Could not believe the leak was so severe, considering this car still runs like a beauty and has shown no leaking or other symptoms in the days before this occurred. Got home later that day and checked filter thinking maybe it had loosened. It had not. Refilled engine with oil and noted oil not leaking or dripping but pouring through area at engine block and oil cooler juncture at filter area. Found this forum and a few others on line and followed the plan , AutoZone: loan-a-tool 30mm 1/2" drive socket is all you need to do the job, except of course the oil cooler seal/O-ring which I got at Honda for 3 bucks. Took me all of 45 mins...no need to dettach hoses and leak antifreeze, just unscrew the 30mm nut and remove the old gasket/seal. Be sure to remove all the pieces, Mine was hard and brittle and broken in 3 pieces. What once was rubbery/pliable would now snap like a pretzel due to age/wear. When I buy my next one of these, and I will, because it is the best vehicle I have ever owned ( and I have owned several Hondas and Toyotas) I will preventative replace this seal at approx 150,000 miles.... this was close to being catastrophic failure- Thanks to this forum and others for the advice-plan to put another 100,000 miles on this baby!

Posted on Jan 07, 2010

  • kbarr226 Dec 02, 2010

    very helpful, and thanks for the 30mm socket heads up, knew to have one before i got up under the car, and the $3 O ring

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Remove the filter and check to see if it has an extra gasket. (sometimes the old one remains on and new filter is installed on top of it.) If the leak is coming from between the engine and the "device" Likely an oil filter mount pad or extension, make sure the bolts that hold it on the engine are tight (Don't turn them really really tight or they could snap) . Clean the area off all around the leak and put it back together. If leak is still there you may have to replace the gasket at the block. If the device is a sending unit with a wire on top, change it...that is your oil pressure sender...they often leak.

Posted on Apr 04, 2009

  • Richard Scordino Apr 05, 2009

    Thanks for rating my answer (you would not believe how many people don't!) If you need help when you get to check it out, I'm here!!!

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Remove the oil filter. Remove the nut holding the oil filter adapter to the engine. The O-ring gasket between the adapter and the engine is probably worn. The replacement cost about $5 at the dealers. I had a lot of trouble trying to install the O-Ring gasket, so I ended up buy a sheet of gasket paper from the auto parts store. I flattened it out, then cut out a gasket to fit on the engine. Now reinstall the adapter and (new) oil filter. Start it and check for leaks. Fill oil to proper level and test again. 

Posted on Apr 05, 2009

  • indykev Dec 30, 2010

    The adapter is an oil cooler and has two coolant hoses going to it. The nut holding it is part of a hollow bolt that holds on the cooler and has a threaded nipple beyond the bolt. The nipple is also hollow and is what the oil filter screws onto. Because the filter will be unscrewed it is important to get the bolt tight enough so it does not unscrew with the filter and loosen the oil cooler. However, because it is hollow it must not be overtightened (no bolt should be over tightened for that matter - that's why they call it OVER tightened) In any case the torque for the bolt (with attached nut is 54 ft/lbs.
    In addition, i had some trouble with the O ring installation as the dealer part o ring did not fit tightly or stay in the groove (it seemed to be skinnier than the groove) So, I put some bearing grease on it., not much but more than a thin coating, in order to hold it in place untill I bolted it down and it compressed to fill the groove. It worked well.
    I hope this helps the next adventurer.
    KO

  • indykev Dec 30, 2010

    Just for further clarification - The bolt/nut that holds on the oil cooler and to which the oil filter is also screwed is like a piece of hollow tube with threads on the outside and a 30 mm nut threaded down about a third of the way and welded in place ( it is really not a nut welded on but the whole thing is manufactured as one piece and looks like a nut fixed in place on a hollow tube). in addition the piece that is below the nut (2/3 of the length) and goes through the oil cooler and into the engine block has holes drilled through the sides into the hollow center to allow oil flow.
    When i bought my o ring from the dealer I asked the parts guy what the torque specs for the bolt/nut were and he sent me to the service department. they pulled it up on a blow up of the block and printed it out for me. It was nice to get that visual representation of the repair even though it was simple. Also, my 30 mm socket was just deep enough to use and allowed room for the oil filter (1/3) nipple. But the suggestion of getting one from autozone loaner program is good and it may even be a deeper well socket.
    I hope this helps.

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More than likely the gasket needs replacing. i'm not sure of the are your describing,, but all parts that fit together have a gaskit between them to prevent leaks. the gaskeit that connects the part may be shot.

Posted on Apr 04, 2009

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It is an engine oil warmer,have someone take it off,you dont need it,then get a new filter and replace it.
rather severe oil leak from the area of the oil fi - 1923244-5sp5orn0xnhdqraxk0v0421v-3-0.gif

Posted on Apr 14, 2015

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My 98 Honda Odyssey with the 2.3 engine has an oil filter mounted on back of the engine, middle ways just under the intake manifold. It doesn't look like it has an oil cooler under the filter but looks like an adapter. Am I correct about the adapter?

Posted on Mar 07, 2010

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Actually it could also be the oil cooler itself leaking. Mine cracked on a cold winter night last winter. Part $385 from honda.

Posted on Jun 08, 2009

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