These rear main seals do not generally cost more than 25. I'd replace the PCV valve with an upgraded version & SS cap. Especially for a part that costs a few dollars at your local parts store. It's best to replace both of them every 50,000 miles proactively. Also, the PCV valve next to it stops working properly and this too will cause excess pressure in the system. After so many heat cycles, it stops working and creates excess pressure in the system. One of the culprits to causing the rear main seal to leak is the vent hose on top of the valve cover near the fire wall has a one way valve. If there's oil in that compartment, it's most likely a RMS leak. It might not even be there if not you can see the flywheel moving when the engine is on. PRO TIP In all cases, a small amount of gear oil would be needed to top off the differential. An SKF seal costs about 9, making the job cost about 109. For a 2009 Ford Explorer, the labor time to replace the rear pinion seal is around 1 hour. There is a circular, black plastic plug that's near where the trans & engine mount, at the bottom of the engine. An SKF seal costs about 14, making the job cost about 143. You can always use brake cleaner & wipe up the oil residue in that area & let it run for a bit while on Jack Stands to see where exactly the oil is coming from. Otherwise, expect to pay around $1200.00 or so at a place that specializes in European Automotive repair. It can be done as a DIY, if you have the right tools and can lift the car off the ground a good 21-22" or so I wouldn't try doing this on Jack Stands personally. The rear main seal can be tricky to identify. In fact, even allowing for stealership markup, the price makes me suspect that's the case.Thanks for responses I had it inspected due to having it up for sale and the guy said that he could see the oil seeping from the rear main I didn't actually see it with my own eyes but I trust this guy I suppose this may require the removal of the transaxle totally from the cramped little Pilot engine room. It's not like the process requires any special parts or equipment, just the ability to split the transaxle off the end of the block far enough to pop a new rear main seal in. I have to say, $1200 seems a little on the high side to me though, I'd be inclined to ask around local specialist import shops for a price, they should be able to give you one over the phone based on model and year. I presume your dealer has ruled that out as a possibility (I don't even know if the Pilot is set up in such a way that this is a possibility) If you are looking for a temporary solution until you can afford a complete fix or if your car isnt valuable enough to justify the repair costs, you have a few other impermanent options. However, as weve discussed, this can be very expensive. Remove the positive pressure from the crank case and the oil leak goes away. The simple answer to a rear main seal leak is to replace the part. The other circumstance was a clogged crankcase breather which ended up pressurizing the crank case, forcing the oil out through the seal. The average cost for a remove & replace extension housing seal is 78 Save 10-40 on your vehicle maintenance and repair. I imagine all the Pilot seals are spiffy silicone these days. Being coated in oil again helped them swell back up a bit and sealed the leak back up, but that was with oooold French cars with presumably fairly stone-aged nitrile (or worse) seals. I know the rear main seal is on the other end of the engine, so is there any maintenance item(s) that get into that area normally when the rear main seal can be replaced?Īny tips or info would be greatly appreciated before I fork over $1200+! Thanks!Īgreed, I've only seen an engine oil leak stop under two circumstances Ī vehicle that had been stationary for a number of years and had it's seals shrink. What I mean is like when you do a timing belt, I believe they replace the front main seal at that time because they have access to it when it's all ripped apart to change the timing belt. Second, if it is the rear main seal, is there any other maintenance item(s) that should be done when you get into that area because it's going to cost over $1200 to fix. My question is first, would you all agree it's the rear main seal? There is a black cover there which I think is the Torque Converter peek cover and it is wet with oil all around it. I see no oil leak from the top around the cam covers, but under the vehicle, there is a huge wet area where the engine mates with the transmission. I just developed an oil leak under my 2007 Pilot at 148K miles which I believe is coming from the rear main seal.
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