lifter or cam is messed up

i was on the freeway the other day doing about 3500rpm, when i exited i noticed that the engine had a rough idle, ticking noise, and the exhaust sounded strange. i took off the rocker cover, started the engine and saw that one of the rockers next to the fuel pump was hardly moving, i adjusted it a little and the idle got a little better but its still not moving much compared to the others. i think its time to buy a new cam and lifters.

Hydraulic lifter? Could it just not be pumping up?

IIWIYS...
push rod bent? compared to others
lifter scored? compare to others
rocker shaft scored? compare to other spots
rocker bent/cracked? inspection

that's what I would do, but if all checks good, i would just replace lifter for a test. but if scored or dmg'd, cam+lifters

if the new lifter test doesn't fix problem, cam is bad.
if new lifter does fix problem, it's possible it's a bandaid, it'll work till ???? or it really fixed it.

then if ANY other lifter fails after installing the new lifter then yes, I would do cam and lifters.

post findings!! and pics

Do it the easy way.
1. Remove rocker arm shaft. Rotate crankshaft & measure pushrod movement on the bad cylinder & compare it to one other camshaft lobe. This removes the valve spring from the equation.
This will see if you have a collapsed lifter or a wiped camshaft.
A wiped camshaft will wear the contact area of a lifter & cause it to collapse.
Time to call Mike if you need camshaft & lifters. Good luck.

i think ill just replace the cam maybe a solid lifter cam, my cam was an ok cam but i didnt know what cam it was and it would fall on its face after hitting 50mph. I dont know a bunch about picking a cam so ill tell you all what im looking for and maybe you all can help.

I have a tri- weber 34 ict progressive setup.

3.55 rear gears 15" rim, tall tires

select shift, H-servo, B&M shift kit : C4 trans

my thoughts are that the 6 is already fast off the line, id like a little more pull in 2nd gear

with the old cam, it would go 0-50 very quick then fall on its face

i forgot to mention that my oil pressure went down a little after the lifter problem, its at 30-35psi at idle now, it was at 40-50 before using 10w40 oil