AlexLs1

iTrader: (1)

My car will run fine, drive fine AC on or not, haul ***. Then just sitting there idiling/running it'll blow the valve cover gaskets clean off. Smoke and oil everywhere, loud backfire, etc.....

Why does it continue to do this?

The car does sound like it has a missfire. Pulled the plugs, and on the passenger side the 2 at the front were torched.

I thought maybe cause I dont have a breather. I started it up with out the oil cap on and as the engine runs you can see the rep of smoke as a piston would turn/make a stroke. Is it a burn't up piston/ring?

What could this be? A compression test and Leak down test are being performed as I type.

Any comments suggestions, experiences, solutions are more than appreciated. Thank you.


MODS in sig. (below)

cantdrv65

iTrader: (3)

NOT good. You shouldn't have cylinder pressure under the valve cover obviously. Cracked head or bent valve would be my guess. With the rockers off the valve tips should all be at the same height....

AlexLs1

iTrader: (1)

Thank you for the fast response.

Anymore comments anything at all are a great help.

cantdrv65

iTrader: (3)

What were the results of the leakdown and compression test?

Skinny

iTrader: (11)

The compression and leakdown tests should identify the problem.

AlexLs1

iTrader: (1)

I'll know in a few minutes.

Thanks.

SIC LSX

iTrader: (10)

your rings are gone! You have a ton of blow by! time for a rebuild. Put a breather where the oil cap goes is about all you can do. but when you get on it hard i will blow all under your hood!

AlexLs1

iTrader: (1)

Most likely. Pulling the head tomorrow.

What I don't understand is, why now, shouldn't it of done this 20K miles ago.

It has had very little spray put threw it. I'am not that hard on the car to begin with. Not at all to be honest.

Thank you all for your all input and comments.

cantdrv65

iTrader: (3)

I don't think its the rings or piston. That would pressurize the crankcase. (blow out the dipstick) IMO.

DaddySS

I assume you don't have a PCV system. If you are pressurizing the crankcase you have either a rare blown headgasket or bad rings. Leak down will tell you and PCV should help. The fact that you have a misfire is also a clue. When you say torched plugs what do you mean?

cantdrv65

iTrader: (3)

Hes blowing out valve cover gaskets.....not crankcase.

99blancoSS

iTrader: (115)

-Joseph-

iTrader: (12)

If you melted some plugs, I would check those 2 cylinders first for diagnosis as it may have taken out the rings. Melting plugs is one of the first obvious signs of running lean and/or detonating, neither of which is recommended. My guess is that the melted plugs are nitrous related, I've seen very few plugs melted on a N/A application (although its possible...)

I haven't seen valve cover gaskets blow out unless there was no breathing system at all, you should have some sort of breather or breathing system to allow crankcase vapors to escape. Be it stock from the valve cover to the TB, or just a K+N oil cap breather, one or the other is needed either way after you fix the engine.

DaddySS

Those are the same, that's why the Crankase Ventilation system is connected to the valve covers.

cantdrv65

iTrader: (3)

Your right but the dipstick would be going through the hood before the valve cover gasket would blow out IMO....

So any news OP?

RsSean

iTrader: (27)

My buddy had a STS kit it had a lot of blow by. What would happen was the oil cap itself would blow off. Seeing that the vavle cover is where most oil cap are. The pressure has to go some where. Since there is not a lot of pressure on the out\side of the vavle cover due to the center bolt desgin that just so happens to be the weak point of his engine is.

Also with torched plug would led me to belive that the motor went lean first, unknown reason. Fired the rings. Then caused a lot of blow by cauing the valve covers to pop. With the ring being destoryed the engine will continue to have a blow by problem. I might be wrong it what I said, but from what was said earlier that is what it sound like to me.

See if Texas Speed has a warranty... Wish you the best of luck.

AlexLs1

iTrader: (1)

All could be related. I will know the exact cause of the problem with the solution of fixing and avoiding this problem from ever happening again soon enough.

Thank you to those who responded in this thread, and a huge thank you to the people who are going out of there way get my car running properly. You people know who you are.

Thanks to amazing family and friends my car will be up and running soon.

I'll give a response later as soon as I know what is excatly wrong.

Thank you all once again.

99blancoSS

iTrader: (115)

What piston and rings were used?

AlexLs1

iTrader: (1)

Diamond Racing -2cc Flat-tops

Diamond Racing3.905 Pro Select rings

99blancoSS

iTrader: (115)

Keep us posted on what you find out. Were you using the n2o when something happened? I know you said you didnt use it much, did you use it and then notice these things start developing? You dont say if your using a wet or dry? Sorry for your loss but there could be some good info gained from this thread, please keep us informed.