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JB
Dodge Dakota
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12/19/2006
22:51:09
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 Subject: Water in engine
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Have any of you guys ever swamped your engine? I hate to ask on the Dakota forum since it's not for my '88 Dak but it's the only forum I know.
My friend has a Lexus IS 300 and she drove into a huge puddle in the big storm we just had in Washington. Any way, the car stalled out and now everyone is telling her she needs a new engine. I told her all she should have to do is pull the plugs and maybe have some electrical/computer problems. Any ideas?
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4.7onN20
Dodge Dakota
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12/19/2006
23:58:45
| RE: Water in engine
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Will the motor turn at all or is it completely locked. To much water in the intake can litterly make the pistons and rings come apart. Ive seen it done before. If you can, pull off the oil pan and take a peek around for bent rods or pieces of metal in the pan. If your starter is clicking and the motor isnt turning at all I would say theres a 90% chance it is shot.
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GB2000
GenIII
12/20/2006
00:46:20
| RE: Water in engine
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If nothing is bent, she can prolly pull the plugs and crank it over to get the excess water out of the cylinders...then replace em and start it up. I think there's something you're sposed to do to prevent stuff from rusting out, but I don't have any experience with hydrolocking car engines...just four-wheelers SOMEWHAT.
From what I've heard though...if you get enough water in there, as 4.7onN20 mentioned...usually stuff bends/breaks. Chances are pretty good, it completely locked up and it's trash...
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little jer
Dodge Dakota
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12/20/2006
01:36:58
| RE: Water in engine
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I always heard never to start the car if there is water in the engine as it will not compress and will bend the rods if you try starting it. Driving through a puddle won't hurt as long as the engine stays running and everything is sealed good
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GB2000
GenIII
12/20/2006
07:52:04
| RE: Water in engine
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"Driving through a puddle won't hurt as long as the engine stays running and everything is sealed good"
Not necessarily...if the water makes it into the intake, it's gonna end up in the cylinders and it'll end up being compressed...til something breaks and/or the car stalls.
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.boB
Dodge Dakota
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12/20/2006
16:20:00
| RE: Water in engine
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She probably does need a new engine. If there's a fair amount of water in the crank case, then it most likely stalled because of water in one or more cylinders. That can do significant damage to almost everything. Time for a crate motor.
If the crank case is clear, it probably stalled from shorting out the computer. Pulling all the electrical plugs and blowing them dry should fix the problem.
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eddie
Dodge Dakota
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12/20/2006
16:39:04
| RE: Water in engine
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My brother drove my 95 neon through a water puddle and bent a rod. Didn't help that the car was lowered 3 in and cold air intake. i had just gave it to him like 3 days before.
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OBIO3
Dodge Dakota
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12/20/2006
22:56:16
| RE: Water in engine
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I'm surprised no shop was honest enough to tell her she has a 50/50 chance the engine is ok. It all depends on how high the engine was reving at the time. Most people are smart enough to realize you do not race into any water situation for fear of hydroplaning.
First you pull the plugs. see if it will turn over. Starter may be drown also preventing this. As a rule it isn't. If it turns over, it will pump out most of the water but not all and not enough to try starting. If it is a standard, you can pull it in gear to get the rest out . If not you need a 1.4 inch tubing with a connecter that fits your air hose. Bring a piston up to TDC and stick it in the hole and plow it out. TDC insures all valves are closed. Be sure to protect your face doing this. Now is the time to turn it over. If it turns, do a compression chick on all cylenders. This will give you a good idea if there is dammage. If all seems to be ok after you do this to all cylenders, pull the oil plug and drain it. Put in new oil and filter incase it run long enough to pick up some water and pump it into the filter. Install your plugs and using the same tube on your air hose, dry every thing in sight. Try to start. If it's a no start let it sit in a warm place with hood open and dry out well. After doing the compression check, if one or more show bad, stop here and deside what you want to do . tear it down or replace the engine.
I've done a few engines over the years. Guys try to push ice fishing season to far and there to lazy to walk out on the ice so they drive. Summer time I did an occational boat engine that fell off the boat mount.
One thing that might help someone some day. A motor UNDER WATER will stay rust free for a pretty good lengh of time. Once you pull it out you have zero time to get all water out.
Truck/cars that fall through the ice here got to be removed fast. 25,000 dollors each day it is down there. Insurance companies do not cover the fine or the recovery.
So many problems .... So little time
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N56629
Dodge Dakota
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12/21/2006
06:40:09
| RE: Water in engine
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I'm surprised that everyone is trying to diagnose a problem based on such sketchy information. If this guy really wanted an answer he would at least have the courtesy to check back and give more information.
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JB
Dodge Dakota
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12/21/2006
11:23:12
| RE: Water in engine
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Thank you guys! I knew I could rely on this forum for at least some good advice and a few steps to get started.
I am sorry I haven't provided more info, all that I've heard has been over the phone. Not to mention that the storm that did this to her car knocked my power out for 5.5 days! I posted the question from a friends house.
Thanks again, I'll let you know what we find!
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little jer
Dodge Dakota
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12/21/2006
18:53:18
| RE: Water in engine
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He said "puddle" not lake or stream. Water would have to be deep enough to be at the level of the exhaust valves to get in engine. And if the engine is running the exhaust should keep the water out. Once it stalls and dies, then you may be in trouble. Just don't expect your car to be an Amphicar. It's also not good for your wheel bearings.
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Kowalski
GenIII
12/22/2006
08:21:42
| RE: Water in engine
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little jer - the water doesn't have to be as deep as the valves for this. Many intakes are placed low enough that this can be caused by a large puddle. It only has to be deep enough to cover the intake.
Lead, follow, or get out of the way
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little jer
Dodge Dakota
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12/22/2006
12:36:01
| RE: Water in engine
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still has to be a pretty deep puddle for that. Still, people sometimes lose their common sense in the rain. Trying to cross roads with swiftly running water that washes their car off the road. It doesn't have to be deep either. The power of rushing water is more than one thinks.
They think their car is heavy enough to make it through but they are in for surprise, as we've seen on many news shows. Also the fan tends to spray water all over the engine and often is the cause of a stall, either by it dragging the engine to stall point or by the water drowning out the distributer or shorting some other electrical componant. Yet they have vehicles with deep water fording capability with snorkels and everything sealed up tight. wonder how the engine fan plays in there?
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4.7onN20
Dodge Dakota
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12/23/2006
21:57:21
| RE: Water in engine
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My friend blew up his taurus in a puddle that wasnt that deep. The intake was so low it just sucked it right up and blew out 2 rings along with some piston chunks.
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