That ticking noise....

[Madgyver]

Suspected a collapsed and stuck lifter..
Found a rocker arm and fulcrum that wore out...

 

[nvrstuk]

Not a good thing... least it didn't wear thru and break off! How do all the others look?

 

[Madgyver]

Not a good thing... least it didn't wear thru and break off! How do all the others look?

They were all tight. What made us look for it was a sound that pointed to a collapse lifter. Used a stethoscope to narrow it down. Ordered a lifter beforehand and when it arrived, Taz pulled the intake to investigate.

 

[EPB72]

If you have pressed in studs check that it's not starting to pull out..

 

[Madgyver]

If you have pressed in studs check that it's not starting to pull out..

It was one of the first things we checked..

 

[Broncobowsher]

Had a tick that would not go away. Ordered up a cam and lifters. Took it apart and found the stamped rocker arm had blown out at the end of the pushrod. Crack all the way down to the fulcrum. But there was still enough of the pocket on the rocker arm to work the valve. So I added a set of new pushrods and rocker arms to the refresh.

 

[73azbronco]

ahhh a lifetime of service. Fixed my future father in laws buick electra 550 in driveway, same issue. He let me marry the runt of his pack, my lovely wife.

 

[SteveL]

Suspected a collapsed and stuck lifter..
Found a rocker arm and fulcrum that wore out...

Lucky you. When that happened on the 66 a few years back it was a main bearing. The bronco sat a couple months till I could put a new clutch in. Cranked it a little and fired it up to a pretty good tick. First thought was a lifter. After some digging the motor was on the engine stand.

 

[Rustytruck]

check the push rod tube and make sure its clear. lack of lube came from someplace.