Here's my problem, 99 Subaru Legacy 2.5 dohc. I had a really bad oil leak at the cam seal (RI)and around the valve cover (right head) and a plug wire that was pulled apart at the boot. Car ran fine no CEL, no ODB2 codes, just a qt of oil every 3 days. I change out the seal, valve cover gaskets, valve bolt grommets, oil & filter, and plug wires (just for g.p. cause if the torn one). Mind you again car ran fine before service. After servicing it also ran fine until it warmed up and drove for 10 or so mins, then began to cut out in 3rd gear @ around 3000 rpm, shift into 4th fine until again @ 3000rpm same in 5th. Had it scanned and camshaft position sensor along with P0301,P0302 & P0304. Cleared the codes, replaced cam sensor and ran fine until engine warmed up and same problems began to arise. T
Re: Here's my problem, 99 Subaru Legacy 2.5 dohc. I
In order to replace the cam seal you have to remove timing belt if tou did not have this problem before you have one skipped thoot on your subaro box engine recheck your timing again
The error that I'm showing for error code P1133 is P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank). I would suggest having both of your Oxygen Sensors replaced if you haven't already had that done. Hope this helps. Thanks for an honest rating and for using FixYa.
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will try to help.if it's only the valve cover leaking,i'm guessing they sold you the rubber one that says ne rtv sealant needed. take your back off, try not to break the rubber seal when removing!clean the top of head where gasket goes. clean the valve cover really good!clean the grooves out that the gasket slides into. buy some blue trv glue, apply a thin coat to top of head, let it setup while you apply another thin coat to valve cover, let set 10mins. apply gasket to valve cover making sure to push the gasket into the grooves on valve cover. don't worry about neatness. let the valve cover set on a hard surface with the gasket against the hard flat surface[such as a garage floor,or clean driveway] after10 more minutes install the valve cover,make sure and take your time. place valve cover onto motor,than hand start each bolt to insure thay are going into the prope bolt holes. after you have each bolt hand started, start at center of valve cover snugging the bolts down to motor. do not crank down or apply excessive force when tightening those bolts. you should see some of that blue rtv glue coming out around the valve cover when applying torque to the valve cover bolts. only secure them snug at first. let car set for 15mins. start car and look for leaks around the cover, do not over tighten those bolts but you may need to look for a leak, go to bolt closest to leak and turn it 1/4 at a time until leak stops. but if you do this step by step, you'll not have a leak issue. you may have pinched the gasket when you replaced it. hope this helps and thank you for choosing fixya.com
It is usually the front cam and crank seal ..have to take the covers off and inspect too be sure.. in rare cases the valve covers will leak inside to the cover but I dont think yours is set up that way
that means you have an oil leak, the bad news is that the subaru is known for leaking head gaskets,it may be valve cover gaskets as well, you will have to jack up the car and take a look heres a diagram to help you locate the head gasket and valve cover gasket.there a gasket on each side of the engine.hope this helps.
Replacing the cam seal is really more time consuming than difficult. The EJ-25 motor requires the removal of front covers, timing belt, and the timing gear for the cam that needs replaced. The seal can be replaced without removing the valve cover or cam. The installation is very important on setting the cam timing. Good luck and have a great day.
most likely it is the valve cover gasket. it covers the valve train where there is alot of oil to lube the top of the motor. if the head gasket was leaking it may have more signs of running poorly. also having coolant leaks also. so i will have to say valve cover gasket. now usally you may have a oil burning smell with it depending on the area of the lek but not always.
the valve cover can easily be seen when the hood is open. it is right on the top and where it meets the clyinder head is where the gasket is and the leak can be seen.
probably resulting in bad instalation !
i sugest you to klean the area with large amount of break kleaner and then drive the car to find the exact location of leakage to make the repair easy ...could also just try to tigntnig a bit all the screws again!
Oil leaking from old valve cover gaskets is common on Subaru engines. Once the plugs get oil on them it's best to replace the gasket, wires and plugs. Since that's been done, the next step would be a scan of live data to see what fuel trims and oxygen sensors and MAF sensor readings are. Also, a fuel pressure test. Until you do that, you really don't know what's going on. Don't replace any more parts until you get it diagnosed.
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