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| Changed thermostat, now lots of grey smoke | |
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| Tweet Topic Started: Nov 11 2016, 09:17 PM (773 Views) | |
| JackVan | Nov 11 2016, 09:17 PM Post #1 |
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Hi all, Been lurking for a while and reading up on things... but now I need help! I changed the thermostat in our van today, wasn't getting hot enough. Took off various hoses and moved what looks like an oil return line out the way (it was bolted through the thermostat housing). Put it all back together again but didn't bolt up the line again (seemed like a PITA, and didn't see the point since it wasn't going anywhere). Well, I started it up and gave it a few revs stationary to get the air out the system. Running well at this point engine still cold. Then I went to move it down the hill it was sat on, and at the bottom it died suddenly (200m distance, like I'd turn the key off). I managed to get it started again but there was lots of grey smoke coming from the exhaust. My instinct is that the oil line I didn't bolt up again needed an earth and without it the turbo had too much oil pressure - resulting in oil in the turbo? Unless that thing does something else, but it goes to a pressure sensor on the turbo so would be logical. I've run it 12 miles to the nearest village and back, still kicks out smoke and is under powered but this gets better when the boost comes in at 2000rpm. Seems to have gotten slightly better though. Any other suggestions? Not sure if the turbo will be FUBAR if the oil pressures been too much? |
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| trance | Nov 14 2016, 12:08 PM Post #2 |
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Not exactly sure what pipe your talking about. Pressure sensor on turbo? If your turbo was gubbed it would generally be black smoke I think grey/blue smoke is usually burning oil. I find when mine is cold it burns some oil, due to tolerences etc. Sorry not much help..... Is the engine getting up to temp now you have replaced the thermostat? Edited by trance, Nov 14 2016, 12:10 PM.
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| johnr | Nov 17 2016, 12:39 AM Post #3 |
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just out of interest, have you checked that you havent got water in your fuel. there should be a drain on the bottom of the fuel filter cartridge that you can unscrew to drain the water from the bottom of the filter (oil floats on top of the water. |
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| JackVan | Dec 14 2016, 11:02 PM Post #4 |
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Hi all, Thanks for the replies, I don't get on here much!! Turns out I was talking rubbish earlier, and that thing I couldn't identify was the thermostarter injector which runs off the return line from the injectors. Nothing to do with the turbo or anything. I did a little more research on the topic and found that it was likely that the timing belt had slipped. Matched up with all the symptoms, rough running, knocking, grey smoke, smell of diesel, then not starting at all. The timing belt runs the power steering which would tie in with me turning the van around at the time too. Took it all apart earlier, only took 2 hours or so to get to it (including getting tools to van, then car to van to jump start, then a helper etc etc). It was the timing belt, when the cam was aligned the crank and injector pump were both off by varying degrees. Put the old belt back on and retensioned it (it was really loose) and started up straight away. Got a kit on order from Germany for £70. Doesn't appear to have done any damage, so got off lightly!! |
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| ivecojoe | Dec 18 2016, 11:38 PM Post #5 |
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result,couldnt for the life of me understand why changing just the thermostat would cause those symtoms ! anyways you got away with no damage and sorted,nice one.and welcome .Joe |
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| yiannism | Dec 19 2016, 05:25 PM Post #6 |
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Hello, One thing I don't understand after reading your topic. A pipe ( line was going through the thermostat ?? ) and is a thermostarter injector line which runs off the return line from the injectors? can you be more specific or upload a pic please? I haven't heard or seen anything like what you describe. John |
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| JackVan | Dec 21 2016, 06:53 PM Post #7 |
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Hi John, I wasn't very clear in the first post! The line I was talking about was a fuel line that runs off the injector return. When I was it was bolted through the thermostat housing, I meant it was held in place by a bolt that was holding the thermostat housing together. Hope that's a little clearer! |
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| Graf Von Spee | Dec 22 2016, 09:24 PM Post #8 |
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You should check your fuel hose. There is a chance that water somehow mix with diesel, resulting with white smoke" from your exhaust pipe. |
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