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Old 03-02-2007, 10:14 PM   #1
inline 6
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So I hydrolocked the engine today...

I was driving to a friends house out in the burbs, north of boston where it rained like hell today. Not knowing the streets too well like where all the water ussually gets backed up or how deep the streets are, i went into what i thought was a small puddle which turn out to be a lake. I was going about 20-30mph before i realized that is was a big freaking lake. I hit the brakes and tried backing out of it, the car chugged as it pulled back then stalled out . I was able to get the car out of the lake before it died.

Tried to start it but it wouldnt, turned once and none on the second time. So i got the car towed to by friend place. Tried a couple more times to start it but it would turn, which i regret now after checking a couple of threads saying that by trying to start it i may have bent the rods and damaged the pisten seals. So i thinking my next step is to pull the plugs, crank the engine to get the water out, then dry the MAF and filter. Then change the oil and oil filter and see if everying is OK?

I know shouldnt be driving through lakes and large puddles if you have a CAI, but whats done is done. Please give me any advise if im missing anything.
TIA inline 6.
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Old 03-02-2007, 10:44 PM   #2
Lexie330ci
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Find a good indy mechanic and get your car towed to him to diagnose. My advice is do not try to fix this car, esp if you dont know anything. Do not make anything worse, just on monday, call a few mechanics that specialize in BMWs and get it towed there. The BMW dealership will charge you an ass load, so keep your distance.
Next time be sure to go Short ram or buy the aem bypass valve.
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Old 03-02-2007, 10:45 PM   #3
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Its very possible that you did bent something internally in the motor. For your sake I really hope you didn't. I would do all that you mentioned but start the car and let it run for 10 mintues maybe take it for a short drive if it starts after the oil change. Change it again when you get back drive it for another 500 to a thousand miles and change it again. And feel it out make sure theres no wierd noises or anything coming from the motor that wasn't there before. If all sounds good and you change the oil somethin similar to what I recomended you should be golden. And extremely lucky for that matter. I have never had any problems with cold air intakes on my cars with hydrolocking though..
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Old 03-02-2007, 10:47 PM   #4
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lol, im telling you, the safest thing to do is to take it to get it towed to a mechanic, do not try to fix it yourself, this is not a DIY.
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Old 03-02-2007, 10:49 PM   #5
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If your not comfortable with doing anything further in terms of tryin to fix it yourself then don't. I recomended the above because thats what my friend did after hydrolocking his car. And yes it worked perfectly. I'm sure almost everyone will totally disagree with everything I said.
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Old 03-02-2007, 10:54 PM   #6
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lol, im telling you, the safest thing to do is to take it to get it towed to a mechanic, do not try to fix it yourself, this is not a DIY.
I am comfortable with working on the car, I ussually do all my upgrade diy, but is there nothing that i can do to perhaps fix this? its just hard to let her sit the there after i did this to my baby.
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Old 03-02-2007, 11:49 PM   #7
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Only advice from me would be to take the plugs out, and crank the car so as much water as possible could come out....
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Old 03-03-2007, 12:04 AM   #8
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ah man
this is what i'm afraid of
i live in san diego california
do you think it's necesary to buy a bypass valve?
i mean it really never rains here
but i just got my CAI today
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Old 03-03-2007, 12:45 AM   #9
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Sorry to hear about your engine problem, that is scary. I also live in San Diego and I am really close to getting a Dinan CAI which has an intake in the brake ducts low up front. Is that what you had too?
Thanks.

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Old 03-03-2007, 07:27 AM   #10
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Quote:
Originally Posted by inline 6 View Post
I was driving to a friends house out in the burbs, north of boston where it rained like hell today. Not knowing the streets too well like where all the water ussually gets backed up or how deep the streets are, i went into what i thought was a small puddle which turn out to be a lake. I was going about 20-30mph before i realized that is was a big freaking lake. I hit the brakes and tried backing out of it, the car chugged as it pulled back then stalled out . I was able to get the car out of the lake before it died.

Tried to start it but it wouldnt, turned once and none on the second time. So i got the car towed to by friend place. Tried a couple more times to start it but it would turn, which i regret now after checking a couple of threads saying that by trying to start it i may have bent the rods and damaged the pisten seals. So i thinking my next step is to pull the plugs, crank the engine to get the water out, then dry the MAF and filter. Then change the oil and oil filter and see if everying is OK?

I know shouldnt be driving through lakes and large puddles if you have a CAI, but whats done is done. Please give me any advise if im missing anything.
TIA inline 6.
Call the guys at Bavarian Performance Group in Stoneham... www.bavarianperformancegroup.com they'll be able to help you
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Old 03-03-2007, 08:54 AM   #11
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damn dude, you gotta always be prepared and worried when you got the CAI in and it's raining harder than it has in 10 years. my wife was out in taht isht and they started to close down major highways all over the place down here in new bedford cause it was so bad. i had leakage come through the mouldings above windows that i've never seen before and like 3 inches of water in the bulkhead in the basement. i had to pump it out with an old fishtank hose! that thing is a lifesaver!!!!

after i put my UUC TSE3 on, i am having second thoughts about putting my AFE CAI back in.. ever since i did that i'd have random stalling issues, especially when it got cold here in new england. so i figured what use is a CAI when it's freaking cold all the time anyways, except for the summer? the exhaust give me such a sweet growl, i don't even feel like i need the cai.. i'll try it again in the spring, and i am sure the growl will be louder, so i might change my mind, but i am impressed with the normal design of the air box. by the way, i was browsing parts the other day and do you know how much the stock air box costs?!!!?!

get a load of this: $264.60!!!!! holy isht! i am sure it's designed that way so that if the car took on water, it would pool underneath the actual filter in that deep part of the box so this wouldn't be an issue... CAI's are like a friggin snorkel if they get near water
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Old 03-03-2007, 09:23 AM   #12
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Do you have insurance? We've seen several hydrolocks over the years, and as long as you have full insurance, you're covered!
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Old 03-03-2007, 09:37 AM   #13
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Do you have insurance? We've seen several hydrolocks over the years, and as long as you have full insurance, you're covered!
id er, take the CAI out before I took it in... is that covered under collision???
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Old 03-03-2007, 09:50 AM   #14
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thats why i went wit the e.c.i.s
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Old 03-03-2007, 09:55 AM   #15
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thats why i went wit the e.c.i.s
you got a pic of the ECIS one? my AFE is better than the DINAN one that bends down and acts like it wants to suck up every inch of water on the road...
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Old 03-03-2007, 09:57 AM   #16
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hmmmt, just saw a pic, the AFE is better IMO, it's got the nice aluminum cover too, and no bends in the tube, in fact, no tube at all. it's like STRAIGHT into the MAF through an aluminum billet ring
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Old 03-03-2007, 10:18 AM   #17
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Are you kidding. .

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Originally Posted by inline 6 View Post

I know shouldnt be driving through lakes and large puddles if you have a CAI, but whats done is done.
What you should have done is install a AEM bypass valve in line with your CAI. You then will not hydrolock. Simple.
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Old 03-03-2007, 10:55 AM   #18
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What you should have done is install a AEM bypass valve in line with your CAI. You then will not hydrolock. Simple.
I was looking into the AEM bypass but it only came 3 inches diameter, the Dinan is 3.5 inches
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Old 03-03-2007, 10:58 AM   #19
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I never shouldve upgrade the ECIS I had to the Dinan, now i might be screwed. Gonna take out the plugs and intake and see how bad everthing is on my break. thanks for all the replies everybody.
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Old 03-03-2007, 05:32 PM   #20
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Good luck! Let us know how it turns out.
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