got my truck running but almost had a huge problem rocker popped off push rod

[buddylj1990]

yesterday got my truck running it was running good didn't have no valve rattle but got up today to drive and tryed starting it didn't sound right so got it running and it was sippin tappin so shut it off pulled valve cover off 4 rockers were really loose two on driver side and 2 on passenger side one on the passenger side was so loose it had jumped off push rod and one on the driver side was so loose it wasn't touching push rod spring so i ajust them and now it runs real good on all eight cylinders

[STOCKISH]

Sweet. Hope they stay that way now! Glad it was a simple fix for you.

[jjzepplin]

I would be concerned about why this happened. Studs coming out of the head or worn threads? If this happens again while driving...

[67_C-30]

Originally Posted by jjzepplin

I would be concerned about why this happened. Studs coming out of the head or worn threads? If this happens again while driving...

Either that, or you have some valves sticking from sitting up. How was it running? Was it skipping?

[buddylj1990]

ya it was skipping a little but thought it was maybe the old gas or some trash in the carb but its not missing a beat now i don't know cause it didn't look like the studs were coming up and the threads wasn't screwed up. maybe someone trying to adjusting valve not knowing what there doing

[slomotion]

If you're running hydraulic lifters and some trash got in them, they may have collapsed (spring pressure pushed the oil back out of them,) be careful that they're not too tight now.

[buddylj1990]

it pulling the stud out what do i do

[jjzepplin]

Well first put a straight edge across all the studs. They should all be at the same height. If that is ok then I would inspect further maybe into the lifters. Was this engine running well in it's history or did you just acquire it? Something is up and you need to know what that is.
If it is the studs they could be pinned or swapped for screw in but that will be hard to do without removing the heads. Metal could easily get into the engine.

[buddylj1990]

heres what its doing i pushed it back in with lock tight few mins. ago ain't coming loose yet i ran yesterday thinking they only need adjusting and it ran real good but this morning went to start it and it pulled the stud thats when i found out it was pulled stud

[GASoline71]

Only way to fix a pulled stud is by either pinning them through the stud boss on the head, or having screw in stud installed. I've pinned studs with the head still on the engine in the rig. Not sure what your mechanical abilities are, but it can be done yourself.

Gary

[bbcmudtruck]

I'd either buy a set of ready to bolt on heads with screw in studs or take your heads to a shop and have them tap and thread in some arp studs. While your at it, might as well freshen them up! However by the time you buy gaskets, studs, pay for shop work and freshen the heads, you can usually find a good set of 2.02/1.60 heads that are ready to bolt on for $500 bucks or less.

[bbcmudtruck]

Also, if your running a hydraulic cam, be sure to add some zinc additive to your oil. The newer motor oil doesn't have enough zinc in it to keep hydraulic cams alive. Also, pull all of your push tubes and blow through them with an air gun.

[buddylj1990]

im going to pin them this weekend

[GASoline71]

Originally Posted by bbcmudtruck

Also, if your running a hydraulic cam, be sure to add some zinc additive to your oil. The newer motor oil doesn't have enough zinc in it to keep hydraulic cams alive. Also, pull all of your push tubes and blow through them with an air gun.

You mean flat tappet cams. Hydraulic and solid.

There are hydraulic roller cams as well.

Gary