Rep Power: 0

I have a cold air intake that was right near the passenger front wheel and it sucked up a good amount of water into the engine, lugging it down (the engine) a few times and killed it twice on a long drive home yesterday. Now I've got some blue smoke coming from the exhaust when I start it and a knock to the engine. Spark plug replacement did not affect the knocking. I'm thinking I might have bent a valve because it's a constant metallic knock that speeds up and slows down with the engine. I did a compression test today and got readings of 130, 140, 220 and 185 on cylinders 1-4 respectively.


I included a 1 minute audio segment which can be viewed on youtube.com at:

http://www.youtube.com/watch?v=csTvrlz22t8


I would appreciate any advice on what you think is causing the knock and what it will take to repair. Thank you.

 
Rep Power: 0

Have you adjusted your valves lately? Could just be the valves. I know sucking water through the intake isnt a good thing but i honestly dont see how you could have sucked enough to really make a difference unless you drove through a river, lol.

 
Rep Power: 812

well based on those compression readings, a valve adjustment is the least of his worries. i think you have some major engine rebuild work ahead of you, or look for a used motor and have that swapped in.

 
Rep Power: 0

Standard should be 135-184. The maximum variation between cylinders is 28psi.
Looks like 1 of your cylinders is way out at 220. Do they hold pressure or drop down pretty fast? Well only the first 2 are within each other. The others are way off. The blue smoke you see when you start up is caused by bad valve seals.

 
Rep Power: 0

That sounds like a bad rod knock. Stop running it and open up the engine immediately. This needs to be checked out ASAP.