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Discussion Starter #1
Its raining cats & dogs here in Charleston. A friend of mine got his '02 BMW 330i bogged down in calf-deep water. He was able to push it out; I got there in time to help push it to even higher ground. Now it will try to turn over but won't catch.

Any BMW-knowledge guys have any tips on how to get it going again - or why it won't start- wet wires or maybe the computer senses water in the exhaust pipe??

Any help is appreciated. We are now trawling the net, hot cocoa in hand...
 

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get off my lawn
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pop off the distrubutor cap and dry it out, heck dry off any wire you see,, BMW's and water dont mix
 

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Discussion Starter #5
These BMW's have a distributor cap like classic detroit iron I'm used to looking at?

Unfortunately there is no garage to pull the car into. The car is in a church parking lot. At least its on high ground.
 

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I hit **** with sticks!
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Remove the coil packs and plugs, crank the engine to purge any water from the cylinders. Replace the plugs. Pull the air intake, and dry off the throttle body, map sensor, and piping. Im guessing he sucked water up into the intake, they are pretty low on those.

If water didnt get into the engine in that matter, it may have gotten into something else, like a controller or module under the hood, cant remember where they are on the 330i....without looking at one. Send it to the Beemer dealer and call the insurance company at that point.
 

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Discussion Starter #9
Update. The rain abated somewhat so we could go back and take a look. First off, I looked at the filter. Soaked. There was a trace of water in the bottom of the filter box as well as deteriorated black foam crumbs.

Next I took apart the tubing that leads from the filter box to the engine block. Water was sitting in the bottom of that tube-- 1-2" of water. We scooped/splashed the rest of the water out. I could see where there was a flap in line with the side wall of the block. I have no idea if this a watertight flap/valve? I could smell gas in the water.

We are worried that my friend's 3-5 attempts to start the car after he first pushed it out of the giant puddle actually cranked the pistons over to suck water into the cylinders, or it was just get the starter to crank, but nothing was really happening?

I also did not mention before, but he lost one of the 'kidneys' from the grille. It was already loose, though. I theorize that at the speed he hit the water, the water splashed up/back into the intake above the fans and had enough force to knock the grille piece out and also get h20 sucked up into the air cleaner.
He is going to have it towed to a bimmer specialist tomorrow and is calling the insurance co.

Thanks to all who have responded to my thread.
 

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1st Gen FTW - It's AutoMedic!
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Towing in and having someone look at it is the best idea, especailly if there is insurance... otherwise, you could try what Dan suggested of pulling the plugs and cranking it over a bunch. It will also need an oil change.
 

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If there was water in the intake, and you tried to turn the motor over - there is a good chance you've done some good damage in there (bent valves, etc). You can try doing what Dan said - remove the coils/plugs and turn the motor over to purge any water that is in the cylinders -but I have a feeling it won't help.

I'd take it to a dealer/reputable BMW mechanic and deal with insurance.
 
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