SportGoldSS

Started a street tune on my car yesterday and once we got it about where it needed to be I took the tuner home and headed to work. On my way to work I heard a knock, and it got louder. I pulled into work and checked my oil... It was very low. I had just checked the oil a couple days ago and it was fine and I hadnt driven it since then. I called a friend and he brought me some oil, it took two quarts to fill it back up.

About the knock. I cant hear it at idle and it is most noticable at around 2000 rpms under a load. Sounds like its comming from the valver cover and it sounds almost hollow, like somethings hitting the valve cover.

3rdCoastPowerSports

iTrader: (5)

i would take the valve cover off and have a look... it is not going to get any better by ignoring it or hoping it will go away,,, might be something you can easily fix now but in a few more days it might turn catistrophic

CHADsterss

Check your spark plugs and make sure they're tight (I had a similar problem and a loose plug was causing it) and check for an exhaust leak. I would do those before pulling the valve cover.

3rdCoastPowerSports

iTrader: (5)

that right there is good advice

SportGoldSS

Im prretty sure its not an exhaust leak but I will check spark plugs for sure.

lemons12

iTrader: (71)

It takes 5 mins to pull a cover.

Low oil will kill a motor quick.. ls1s are notorious for it. Check oil 2-3 times a week for a dd.. Every time you drive for a weekend/track car.

3rdCoastPowerSports

iTrader: (5)

that must be nice, take a while on the vette's

lemons12

iTrader: (71)

Well it also doesn't hurt I have coils relocated. Haha

SportGoldSS

Guess ill pull a cover tomorrow and check it out. It was down two quarts. Would that be enough to do catastrophic damage.

lemons12

iTrader: (71)

Absolutely.

I was less than 1 quart low and spun a bearing.. Granted I was close to 6400rpms, but It still didnt help.

Low oil kills these motors extremely quick.

Cooldude5231

iTrader: (6)

were you driving it hard when you noticed the knocking?

SportGoldSS

No I was not, it was after driving it hard.

lemons12

iTrader: (71)

My guess Is It is worse than you think.. Could be a lifter... Maybe even a spring.. Bent push rod. Any of those will show when you pull the cover.

How is the idle? Where is your oil pressure now?

SportGoldSS

idle is still choppy as **** due to the MS4 but oil pressure is normal. Springs are double .650 lift springs, pushrods are the hardened ones texas speed gives with the package.

lemons12

iTrader: (71)

My money is you have a rod knocking. Hope I'm wrong.

SportGoldSS

Wouldnt a rod knock at idle?

lemons12

iTrader: (71)

It should.. You should also hear a litter, push rod, or spring at idle as well however.

Take a broom handle or piece of wood and stick it where you think the noise is coming from etc..

98silvermaro

iTrader: (8)

if it was rod knock you would hear it at idle for sure... been there, done that... my bet is that it is a lifter

SportGoldSS

Would a bad lifter hurt my cam?

Ironembraced

cut the oil filter in half and cross your fingers.