Stab & Steer SS

I would check this first. It sounds stupid but I pulled all my passenger side rockers and pushrods to later find a loose plug.

OUTLAWZ RACING

iTrader: (9)

Check your A>I>R lines if you still have them if not then check your block off plates. Macs tend to come loose.

2000BlackM6

iTrader: (6)

The lines are removed, I'll check the block off plates, and the plugs and wires are a week old, but i'll double check those too

socmguy

iTrader: (18)

Just fixed mine. Ended up being the rockers. Here's the thread:
https://ls1tech.com/forums/generation-iii-internal-engine/975450-fixed-ticking-squeeking-coming-my-valve-train.html

Schantin

iTrader: (6)

Yep, that will make a big ol' tick if those come loose. I had that happen once.

2000BlackM6

iTrader: (6)

well I pulled the valve covers and the rockers look fine, one of the push rods may be bent, so tomarrow I'm pulling off the rockers and push rods to get a closer look

nastyr-x-7

Yeah, Ive been where you are. My buddies car had a ticking noise and was setting a P0300 misfire code from # 7 cylinder. We first checked the pushrods and they were not bent, so then I did a compression check on #1 and #7 for a comparison, and #7 was about 65 lbs lower than #1, so that told me we either had a bent valve or hole in the piston. So we pulled the head off and sure enough we had a chunk of the piston gone about the size of quarter.

Swed55

Hi

Here is my engine before i replaced the lifters on the passengerside.

http://s175.photobucket.com/albums/w...0080718006.flv

And here is what it sounds like after.

http://s175.photobucket.com/albums/w...0080822014.flv

Its still some noise from the fuelrails.

2000BlackM6

iTrader: (6)

hopefully that's not the issue, but i was throwing a misfire code too, it just didn't tell me which cylinder

2000BlackM6

iTrader: (6)

that's what mine sounded like, but slightly worse, what brand of lifters did you use?

Swed55

i am sorry i dont know the brand, the company that i bought the engine from sent me 8 new lifters so i could replace them.

nastyr-x-7

Yeah I work at a chevy dealership, so I used a GM Tech 2. It tells you everything you will need to know.

cammedss2000

iTrader: (1)

sameee exact sound! buying new lifters thankk youu! Anybrand recommended.

dz999

iTrader: (3)

The LS7 (GM) lifters are recommended by many; a little more pricey are the Caddy (GM) lifters which can rev a lot higher.

cammedss2000

iTrader: (1)

This is weird. The sound went away. I retuned my idle and took my timing down more on my map and smoothed them more. I also lowered the idle speed to 825 cause before it was set at like 950. It idles good and runs like god, you dont think it was the timing do you? Well either way it is gone for freee! I know this is not my thread but thanks for the help.

dz999

iTrader: (3)

Well that is weird. I don't the timing would have anything to do with it ticking.

2000BlackM6

iTrader: (6)

well i found a slightly bent push rod, so i bought chromoly ones, and got some rockers that only had 33k miles on em, put it all back together, and no difference, still ticks, so its either a lifter, or bottom end, I'm leaning more towards lifters as I've read, I was just hoping to not have to do that

Lt1Porsche

iTrader: (6)

did you check your plugs. I did the same thing. Changed the plugs out one day about a week later it started ticking. got louder and louder as time went on. ended up being a loose plug.

2000BlackM6

iTrader: (6)

yea, I checked them, had a cracked plug, replaced it, still ticks