[camaronut79]

Well while im up here in pa attending school it seems that my car(back home in florida) has started making a noise which is in my dad's opinion and mine (from the vid I seen and from what he has told me) I belive it to be a bad lifter. he told me its coming from the passenger side around the #6cyl when he removed the valve cover he said the #6 intake pushrod had some play in it, he adjusted the valve, it was fine for a few secounds then the tapping started agian. oil pressure is great (55psi cold idle 35psi when warm). tapping does not go away when warmed up.
here's the vid im talking about check it out. http://video.google.com/videoplay?do...06840566745259

 

[camaronut79]

http://video.google.com/videoplay?docid=-2033606840566745259&hl=en

 

[camaronut79]

anyone???

 

[Z15CAM]

I don't know if your motor was OK in the past with a Flat Tappet Hydraulic cam or this is relative to the break in of a new cam; in either case, if a tappet will not stay adjusted, assuming your lash mechanism and rocker arm pivot is solid, your looking at a failed lifter caused by another problem such as a wiped cam lob or bad lifter bore. Just hope it's a failed hydraulic lifter that ill not pump up. I suggest you put in a NEW hydraulic lifter not a used one and give it a try. If the tappet adjustment works loose again, I think you should consider pulling the intake and have a good look.

 

[dawg]

if one went bad then the rest might soon follow.
also make sure its not the fuel pump pushrod (they rattle sometimes)
best bet is do a vacum gage test and see if the valve is actually the problem.

 

[camaronut79]

I have a new solid cam and lifter set from crane I planed on putting in there, now maybe sooner then later. but it wont go in for another 3months
(when I graduate)

 

[camaronut79]

no mechanical pump or rod in the block.

 

[dawg]

cool then I guess i know what youll be doing soon.
make sure to use the cam breakin oil.
and low spring pressure valve springs for the breakin.

 

[camaronut79]

yeah I just wanted to make sure I did not sound like anything else to you guys

 

[zdld17]

If its a failed lifter internals, Old school me, I would disassemble that lifter and clean it good before placing a new lifter on that cam.. something may have gotten inside the little pittle valve or become stuck. you might get lucky. If not , sounds like you will be pulling the manifold again in 3 months.

 

[77wolf10.85]

Do you have screw in, or press in rocker studs?
The press in studs are notorious for coming out.

 

[camaronut79]

screw in

 

[77wolf10.85]

Have they checked for a bent pushrod on the loose rocker?