97 d21 leaking oil at pcv separator
97 d21 leaking oil at pcv separator
Will TS the prob tomorrow but does anyone know what is involved in R/R ing the air/oil separator? Thanks for any/all tips.
Re: 97 d21 leaking oil at pcv separator
I found this on the web referring to a '97-ish Ultima....other than the specifics regarding wrench size, etc., can anyone corroborate these WI for my '97 d21 4WD??
Thanks.
Remove the top two bolts of the breather seperator using a 1/4" drive rachet with a 6" extension and 10mm socket. You also may want to try to loosen the PCV valve using a longer wrench in a 17mm size. It's not necessary to do so, however it will make things a little easier down the road.
Now loosen the alternator bolts so you can release the drive belts. Slide the belt off the alternator and push the slack back towards the power steering.
Jack up the car and lock it in the air securely (make sure you're on a flat surface and the parking brake is on to keep the car from rolling backward). From the underneath of the car detach the three bolts holding the power steering in place (two are by the drive shaft and one is up by the belt assembly). Pull the power steering pump down and to the passenger side of the car (don't pull too hard unless you plan on disconnecting the power steering hoses and refilling the system). Take out the oil filter (you don't need to drain the system, you will lose a little oil, but not much).
Now with this stuff out of the way you will be able to unbolt the last bolt on the breather seperator using the same 1/4" drive with 6" extension and 10mm socket. Now either stand on a step or drop the car a little bit and remove the breather seperator (there is a silcon bead gasket that holds it in place, however it's doubtful you will be able to save it). Untwist the PCV valve from the breather seperator and set the breather seperator aside.
Now Nissan uses pressure clamps so you will need to use pliers to slide the pressure clamp back off the PCV valve hose. Pull the PCV valve off the hose and then slide the pressure clamp off, replacing it with a normal screw type clamp (will make it easier to get it off if you ever have to again).
Screw and tighten your new PCV valve into the breather seperator and clean the old gasket off the breather seperator. Also clean off the engine port the PCV valve came from. There is a grove that needs to be cleaned out too. You may wish to spray some silicon spray of the new PCV valve to help slide it onto the PCV hose. Place some new silicon bead gasket maker sealer on the port and the breather seperator and slide the breather seperator back in to place (may take a few tries to get it in without completely smearing the gasket maker stuff). Reattach the PCV valve hose to the PCV valve and start to screw the top two bolts back in the top of the breather seperator.
Go back underneath the vehicle and place the bottom bolt back on the breather seperator and tighten all three bolts. Slide the clamp you placed on the PCV valve hose over the PCV valve intake and tighten (I found the use of swivel sockets helpful, but if you use a screw type you can tighten them with a screw driver). Reattach the bottom two bolts to the power steering and then attach the top one near the drive belts. Don't overtighten the bottom ones until you start the top one. Retighten all the bolts. Place the oil filter back in place and tighten. Drop the car back down and reattach the drive belt to the alternator and tighten.
Start the car and make sure you see no oil leaks coming from the breather/seperator. You should be all set.
It took my brother and myself about three hours to do this, and a lot of it was trying to figure out how to get to the valve and get it out. I hope this is to some help to you Do It Yourselfers.
Thanks.
Remove the top two bolts of the breather seperator using a 1/4" drive rachet with a 6" extension and 10mm socket. You also may want to try to loosen the PCV valve using a longer wrench in a 17mm size. It's not necessary to do so, however it will make things a little easier down the road.
Now loosen the alternator bolts so you can release the drive belts. Slide the belt off the alternator and push the slack back towards the power steering.
Jack up the car and lock it in the air securely (make sure you're on a flat surface and the parking brake is on to keep the car from rolling backward). From the underneath of the car detach the three bolts holding the power steering in place (two are by the drive shaft and one is up by the belt assembly). Pull the power steering pump down and to the passenger side of the car (don't pull too hard unless you plan on disconnecting the power steering hoses and refilling the system). Take out the oil filter (you don't need to drain the system, you will lose a little oil, but not much).
Now with this stuff out of the way you will be able to unbolt the last bolt on the breather seperator using the same 1/4" drive with 6" extension and 10mm socket. Now either stand on a step or drop the car a little bit and remove the breather seperator (there is a silcon bead gasket that holds it in place, however it's doubtful you will be able to save it). Untwist the PCV valve from the breather seperator and set the breather seperator aside.
Now Nissan uses pressure clamps so you will need to use pliers to slide the pressure clamp back off the PCV valve hose. Pull the PCV valve off the hose and then slide the pressure clamp off, replacing it with a normal screw type clamp (will make it easier to get it off if you ever have to again).
Screw and tighten your new PCV valve into the breather seperator and clean the old gasket off the breather seperator. Also clean off the engine port the PCV valve came from. There is a grove that needs to be cleaned out too. You may wish to spray some silicon spray of the new PCV valve to help slide it onto the PCV hose. Place some new silicon bead gasket maker sealer on the port and the breather seperator and slide the breather seperator back in to place (may take a few tries to get it in without completely smearing the gasket maker stuff). Reattach the PCV valve hose to the PCV valve and start to screw the top two bolts back in the top of the breather seperator.
Go back underneath the vehicle and place the bottom bolt back on the breather seperator and tighten all three bolts. Slide the clamp you placed on the PCV valve hose over the PCV valve intake and tighten (I found the use of swivel sockets helpful, but if you use a screw type you can tighten them with a screw driver). Reattach the bottom two bolts to the power steering and then attach the top one near the drive belts. Don't overtighten the bottom ones until you start the top one. Retighten all the bolts. Place the oil filter back in place and tighten. Drop the car back down and reattach the drive belt to the alternator and tighten.
Start the car and make sure you see no oil leaks coming from the breather/seperator. You should be all set.
It took my brother and myself about three hours to do this, and a lot of it was trying to figure out how to get to the valve and get it out. I hope this is to some help to you Do It Yourselfers.
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Re: 97 d21 leaking oil at pcv separator
I don't have anything specific for you here... mine was a 4 cylinder. The factory service manual may be helpful to you though... check out www.nissanservicemanual.com
Heath
Heath
Re: 97 d21 leaking oil at pcv separator
FIXED IT..! no problem...had to removed alternator to access the baffle (without the screen inside). Removed baffle, cleaned and resealed with permatex ultra gray. Has not leaked since. I wonder if the leak was due to the blowout of the old gasketing due to a clogged PCV valve/ and or increased backpressure. Has brern backfiring when cold and revved high due to scortched valve in #3.
Re: 97 d21 leaking oil at pcv separator
will post pictures if anyone interested....no time right now.