So here's the story... 93 subaru legacy with loud engine clacking, I check the HLA's for bad ones, no problem there, I suspect a bad camshaft bearing. seems like that's where the noise is coming from. first I decide to try and replace the little o-ring on the back of the pump, because I had read that a leak there can cause bad oil pressure.
pull it all apart change the o ring and put it back together marking the belt. start it up its still clacking but doh the oil pump didn't seal
take it apart again and use aenerobic sealant this time and it's good put the belt back on and fire it up to make sure its not leaking before I put the timing cover back on. New insanely loud clacking noise! I check the marks to see if it skipped a tooth, marks line up. Then I count the teeth, 44 to crankshaft then 40.5. my mark is off from when I took it apart which puzzles me. I try it and the the right camshaft mark is off by a tooth, fire it up anyway and it sounds like spoob so I put it back the way it was at 41.5 teeth and the marks all hit 12oclock on two rotations. at both marks I'm hearing a ping on the compression stroke. valve springs? It's a non interference engine what could I have done?
did I bleed out the HLA's messing around with it? why won't the slack in the belt match the timing marks. did a piece of sealant I used the first time get in the oil pump and and is blocking the flow? can I hurt the motor running it? pretty sure I didn't drop a bolt in there
I've researched all I can and I'm dead in the water, the sound is horrific and I afraid to start it.
Anyone have any Subie saving advice?
Cheer, Josh