$@*&...this gets worse

[CJim7]

I started disassembling my 401 today...suspect bad rings (no fire/ no compression on #2)
Pulled the intake and valve cover....noticed all the lifters were oiling like they should but i also noticed the #2 intake valve pushrod was squishy....like there was no compression in the lifter. Suspected bad lifter so i pulled it.

sunofaB......the damn lifter was rounded at the bottom . Of course the cam lobe is also rounded at the shoulders. Checked all the others and they looked perfect.

Does this explain the miss on #2? It doesnt explain the oil in the cylinder or the lack of compression when i tested it.

Also, why the hell would that one lifter do that? Just chance?

Im absolutely frickin baffled ready to just pull this motor.

[AMX69PHATTY]

If the Intake valve was not opening then it would have to suck
air from somewhere, probably around the rings and oil with it.
When mine lost #4 exh lobe & Lifter it bent #4 Intake Pushrod
since the exh wasn't opening letting pressure out.

I would say this could cause the miss and lack of CR on #2.
FWIW

[CJim7]

Heh....so if i reinstall one of my old lifters, how much time does my cam have? 50 miles?

[82Waggy]

Check to see if the #2 intake valve is sticking - it would explain everything you are experiencing.

[82Waggy]

Heh....so if i reinstall one of my old lifters, how much time does my cam have? 50 miles?

Less than 20 minutes.

[CJim7]

Check to see if the #2 intake valve is sticking - it would explain everything you are experiencing.

I just thought of that when i clicked back into this thread.

[Holeshot]

Also, trash (such as a valve spring shim - killed my 390) may have disintegrated and dropped onto the lobe - killing it. Don't EVEN put a lifter on a bad lobe & off it!!!!