Hey guys,
96 L31 here. Super stoked about this, but I've got a consistent soft ticking sound coming from the passenger side. Seems pretty common.
Started after I changed the head gaskets and has been going on since then. Damn it's almost been a year. Initially I chocked it up to exhaust leak so I left it alone. Changed the manifold gaskets and, well, there WAS a leak, but after plugging it up, it only made the tick more noticable !
Took valve cover off, visual inspection was good. Valve lash was good, but adjusted anyway while running. Backed off until tick was audible, tightened until it stopped and another 3/4 turn. Of course one of them had to start squirting oil profusely. Hopefully fix that with an engine clean. Also used my stethoscope, pre adjustment, to try and narrow down ticking location, but found that all of them made a little noise, but not much and nothing was terribly obvious. One of them made a noise I didn't expect. I put my stethoscope on the stud of the first rocker arm and heard a very light knocking sound which made me very worried. Nothing seemed wrong with it mechanically and no adjustment seemed to change the sound. Also it wasn't the same sound, so I don't know.
Anyway, slapped it back together and the soft ticking is inexplicably more noticable with it all together, in the cab. It increases in frequency as I accelerate, quiets down a little at idle, but still noticable. Kinda stumped, but I think maybe I know what it is, but don't want to accept it. Bad lifters. I'm pissed because I could've replaced them when I did the heads, but didn't forsee this.
One thing to note, I'm running 5w30 on a possibly old motor. I'm not sure what the mileage is unfortunately. Guy I bought it from said engine was replaced, but he didn't know how many miles. He guessed around 150k. Odometer says 270k. When I had the heads and intake off, vlcenter valley was clean as a whistle, so I assumed low mileage.
All this to say, I'm running marvel mystery oil in the crankcase right now to try and clean any sticky lifters, and then dropping some rotella 15w40 in there.
Engine runs wonderfully otherwise. It sucks because I JUST finished a 4L80 swap and can't afford to drop another couple hundred on this. Was thinking of just saving up and getting the L29 I've been wanting.
Thoughts/advice anyone?
96 L31 here. Super stoked about this, but I've got a consistent soft ticking sound coming from the passenger side. Seems pretty common.
Started after I changed the head gaskets and has been going on since then. Damn it's almost been a year. Initially I chocked it up to exhaust leak so I left it alone. Changed the manifold gaskets and, well, there WAS a leak, but after plugging it up, it only made the tick more noticable !
Took valve cover off, visual inspection was good. Valve lash was good, but adjusted anyway while running. Backed off until tick was audible, tightened until it stopped and another 3/4 turn. Of course one of them had to start squirting oil profusely. Hopefully fix that with an engine clean. Also used my stethoscope, pre adjustment, to try and narrow down ticking location, but found that all of them made a little noise, but not much and nothing was terribly obvious. One of them made a noise I didn't expect. I put my stethoscope on the stud of the first rocker arm and heard a very light knocking sound which made me very worried. Nothing seemed wrong with it mechanically and no adjustment seemed to change the sound. Also it wasn't the same sound, so I don't know.
Anyway, slapped it back together and the soft ticking is inexplicably more noticable with it all together, in the cab. It increases in frequency as I accelerate, quiets down a little at idle, but still noticable. Kinda stumped, but I think maybe I know what it is, but don't want to accept it. Bad lifters. I'm pissed because I could've replaced them when I did the heads, but didn't forsee this.
One thing to note, I'm running 5w30 on a possibly old motor. I'm not sure what the mileage is unfortunately. Guy I bought it from said engine was replaced, but he didn't know how many miles. He guessed around 150k. Odometer says 270k. When I had the heads and intake off, vlcenter valley was clean as a whistle, so I assumed low mileage.
All this to say, I'm running marvel mystery oil in the crankcase right now to try and clean any sticky lifters, and then dropping some rotella 15w40 in there.
Engine runs wonderfully otherwise. It sucks because I JUST finished a 4L80 swap and can't afford to drop another couple hundred on this. Was thinking of just saving up and getting the L29 I've been wanting.
Thoughts/advice anyone?