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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 11-14-2004, 01:42 PM   #1 (permalink)
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wife was driving car last night. Car started to smoke. She was not too far and was able to drive home. Car was at red indicator. Opened hood and antifreeze was everywhere and mainly toward back of engine. Looked this morning. Hoses look fine. Added water and it started to leak from rear of engine. Anyone know what this might be?
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Old 11-14-2004, 01:50 PM   #2 (permalink)
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you probably can't see it, but there is another hose lower on the rear of the engine that goes into the engine. it probably broke. I can't believe she drove it while on red. take off the intake manifold and you'll see the hose. You'll be lucky if the engine didn't burn any components.
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Old 11-14-2004, 03:30 PM   #3 (permalink)
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Sounds like heater hoses; just hoping she didn't burn the head gasket. rather expensive job.

good luck
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Old 11-14-2004, 06:28 PM   #4 (permalink)
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Yeah you guys were right. It is the bypass or heater hose. It had come off. I tried to reconnect it and tighten clamp. I drove the car around and it seemed to be okay. I drove it up driveway and opened hood to see if there were anymore leaks. I was about to claim it fixed and bam, it came off again. Antifreeze shot all over the engine again. The hose is weird. It is 1" on one end and 3/4" on the other. The 1" end is the end that comes off. Could there be another reason why the hose comes off other than it is just bad. The end does not allow you to mount it well. Any thoughts?
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Old 11-14-2004, 06:58 PM   #5 (permalink)
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I would get a new hose not much $$ if too tight to mount a drop of oil will do the trick, just make sure to get a good quality hose/clamps. Try not to use the old hose simply it is dry from the heat and it may crack again at the wrong time in the place.

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Old 11-14-2004, 07:27 PM   #6 (permalink)
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Since the block is aluminum its NEVER a good idea to drive it when its on red, if it gets hot just stop and call for a tow truck, don't try and make it.. you'll be sorry.

I have a friend thats a mechanic and he told me about a lady who drove an older 750il while it was overheating, yeah she made it ito the gas station, but the engine was TOAST..

I'm glad to hear thats not what happend with your car!!!
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Old 11-15-2004, 06:54 AM   #7 (permalink)
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Quote:
Originally posted by jroberts312@Nov 14 2004, 06:28 PM
Yeah you guys were right. It is the bypass or heater hose. It had come off. I tried to reconnect it and tighten clamp. I drove the car around and it seemed to be okay. I drove it up driveway and opened hood to see if there were anymore leaks. I was about to claim it fixed and bam, it came off again. Antifreeze shot all over the engine again. The hose is weird. It is 1" on one end and 3/4" on the other. The 1" end is the end that comes off. Could there be another reason why the hose comes off other than it is just bad. The end does not allow you to mount it well. Any thoughts?
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Man,
If I were you I'd go and get a pressure test done straight away. Those hoses under normal pressure should stay on but if you have a build up of pressure forcing it off it's very possible you have a cracked/warped head or knackered head gasket. I might be being a bit of a drama queen here but please save doing anymore damage by driving it and go get it tested, they can test the block at the same time.

Good luck my friend.
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Old 11-15-2004, 09:51 AM   #8 (permalink)
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Found what the problem was. The hose connects to a plastic piece that broke off inside the hose. What is this part called? It connects to the block.
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Old 11-15-2004, 11:37 AM   #9 (permalink)
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Originally posted by jroberts312@Nov 15 2004, 09:51 AM
Found what the problem was. The hose connects to a plastic piece that broke off inside the hose. What is this part called? It connects to the block.
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Old 11-15-2004, 11:40 AM   #10 (permalink)
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Quote:
Originally posted by Bear+Nov 15 2004, 11:37 AM--><div class='quotetop'>QUOTE(Bear @ Nov 15 2004, 11:37 AM)</div><div class='quotemain'><!--QuoteBegin-jroberts312@Nov 15 2004, 09:51 AM
Found what the problem was.* The hose connects to a plastic piece that broke off inside the hose.* What is this part called?* It connects to the block.
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I am a E32 guy, but is the plastic piece the nozzle off of the expansion tank, I had this happen on my 750 and the metal bushing inside the plastic piece had slid forward into the hose and you could not a grip on the hose to tighten (plastic kept collapsing) I tapped the bushing back in place and all has been well for several months.
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