ayeaple

Yes I normally use 5w-30 because it is recommended by the manufacture, i always use a good brand too, non of that wal-mart crap, but i read that people put 30w when they have the lifter problem so i thought i'd give it a try. I will definitely change it again before 100 miles and go back to 5w30 and use high mileage oil as well, as i am sure it is recommended for a motor with 197000 miles.

P.S. changed the oil with straight 30w before adding MMO and that alone did nothing. MMO did the job as far as i'm concerned.

Thank you so much for all the info. The Marvel Mystery Oil did the trick. I substituted one quart of oil for one quart of MMO, drove the car for 15 miles and the noise was gone, continued driving as I had other stuff to do and the noise is still gone. I guess it just needed a good cleaning! Thanks for the info on the oil pump, I will keep it for future use. I f the problem returns I will have an artillery of knowledge to use against it. Seriously tho MMO darn good stuff, turns out a very loud lifter problem is only a $5 fix and a little bit of time! Thanks everyone!

Thank you for the replies. I will try the MMO and give it some time. I was wondering if someone could tell me how to get at the oil pump. I have not yet checked the seal and backing plate on it, or before i get into that if i could get some info on how to check oil pressure to see if its down at all. Im just trying to work through the process of elimination, but i don't think its a problem with the lifters because all four intakes went a the same time. So i would think that it have to be a clog or low oil pressure:confused: thanks again. The experience here has been great!

Update: removed lifter assembly and continued with taking the assembly apart to get at each lifter individually. when i took the end block off there was a peice of something where the oil inlet is. I continued to remove all the parts and check all the passageways and ran wire through all the passages i could on the lifter arm assembly and the engine block, didn't seem to find any other obstruction. i put the lifters that were squishy in oil a tried to prime them but they would not pump up. So i thought maybe that removing the gunk that i did find would have fixed it. SO i put it back together and no change. Changed the oil and filter, no change. I think the next thing I will do is Get a whole assembly from a junk yard from a car that has less miles on it ............. hopefully.

Thank you for the info. I will proceed with trying to prime the lifters and clear oil passageways.

is it strange that all of the intake lifters on the one side of the engine suddenly started doing this and not any others?

Ok, so i had the lifters out of the car not immersed in oil. should i have them in oil and see i they pump up, then if not replace the ones that dont? thanks

Hello, this is my first time here, I have a 1996 impreza with the EJ22, automatic, and 197000 miles. I went out for a cold start this morning and noticed the noise. It gets louder at high RPM and does not stop. I though valves so i pulled it apart and realized that there is no adjustment but there is lifters. I pulled the assembly an the intake lifters are squishy and can be pushed in very easily. The exhaust lifers are solid, can not be pushed at all. I checked oil and it was low so i added seafoam after reading on here a bit, the oil is full but still noisy motor. I have not run it long with the seafoam yet, and it is due for oil change so i thought id run it for a bit with the seafoam then change the oil. I am just wondering if i am on the right track and if the problem persists after oil change, where to go next. Thanks for any help.