Ok guys I need some help, lately we have bin getting some heavy rain in Georgia and I was driving thru some water that didn't seem deep but the road dipped down, I was in first gear the whole time never and the water seemed to get deeper so I stopped and I quickly shut off my car, it was only about half a foot deep not high enough to reach the door but the front was hight enough to reach the bumper wich my cold air intake set up has the filter in the bottom corner of the bumper. The car was pulled out and popped the hood open to remove the pipe and saw only small droplets about as much as you would see when shake your hand after washing them. I tried to crank thw car and all I heard it a small clunk. The MAF was a little moist from the drop, haven't cranked it again waiting till the morning to try again any chance it could be a fried ground wire or what could cause it to do that. Sorry for the long explanation just want to give all the details for a better response

 

I hope it's nothing serious. Those CAI can be a pain in the rain.

 

if you had suspected water was pulled, why in the world would you crank it with the plugs in?! If you truly did suck up enough water, you might have bent a rod as water does not compress. Hopefully the thunk you heard was from the starter/alternator being saturated. If that's the case, just let it dry out.

Pull the plugs, inspect for water on the plugs as well as in the cylinder. Crank the engine without the plugs and look for water. If you see water/vapors, clean them out as best as you can. When you crank and there's no more water/vapor, put the plugs back in and change the oil/filter. Fire it up and go from there.

 

^^^ couldn't have said it better.

 

Quick update I did remove the water and started it up but now it's having a misfire what should I look into replacing I went ahead and replaced the spark plugs before starting it. Should I replace the coil packs or entire wire harness, or ecu?

 

I hope it's nothing serious.

 

Just wanted to add this...

The death of my first VQ was caused by hydrolocking. Well, sort of.

I was in traffic so there was no stopping or avoiding this 3 foot puddle caused by a clogged storm drain.

Cold air intake was in the bumper like OP.

Put the thing in neutral and hoped for the best.

The car shut off half way through the puddle, the water was about 12" deep where it sat.

Towed the car home, engine was completely locked up, wouldn't crank at all. Totaly F'd.

Pulled the spark plugs, cranked it over, water came out like a pressure washer.

Changed the oil, and it fired up like it never happened.

Nissan engineering... Or I was smart enough to take it out of gear, but it sounds like you'll be alright too OP. Needless to say I replaced the engine shortly after.

 

Did you have the "By-Pass" valve installed in the CAI?