200tdi need help with bluish smoke - Defender Source
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  #1  
Old March 24th, 2010, 10:57 AM
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Jared Stone
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200tdi need help with bluish smoke

I have a 200tdi, I drove it from NC and when I was almost home (Utah) It started to smoke bluish smoke. I was using the gears to slow me down as I came down a big pass here. All of a sudden it just started to blow out lots of bluish smoke. I thought it was piston rings, from knowing a little about gas engines. I took it to a mechanic, he said it had great compression over 400lb each cyl. But it also had what he thought to be oil on the glow plugs. I was wondering if elevation has anything to do with it. The 200tdi went from 400 ft above sea level to 5000 ft. I don't have any idea how to adjust the injection pump. I have changed the fuel filter. It ran hot almost the whole way home but the temp gauge was a little faulty, but since having it I have replaced the radiator. It had holes it the top of it. I am also wondering if the valves are bad. How do you check those? any help would be appreciated. Thanks guys.
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  #2  
Old March 24th, 2010, 01:11 PM
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Bill Adams
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Yeah, compression can be good but if the valve guide seals are blown you'd definitely be pushing smoke. Try new seals first and see where that leaves you.
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  #3  
Old March 24th, 2010, 01:22 PM
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Jamie Austin
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Oil on the glowplug/s could just mean that that particular glowplug isn't working, and hasn't burnt any oil off of it. Tdi's will start easily with no pre-head.

Valve seals are easy to change, so a good starting point.
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Old March 24th, 2010, 01:31 PM
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Don Lang
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can also be turbo seals leaking... has it done it since? can pull off the intake hose and check for oil there....
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Old March 24th, 2010, 04:28 PM
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The mechanic said it was miss firing. At a low rev, all the cyl are not firing. Sorry I forgot to mention it before in the first post. would bad valve seats cause it to miss fire? I live in Utah, would a shop have the seats or could I do it myself? If so where would I get seats? Thanks for responding so fast guys.

Jared
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Old March 24th, 2010, 04:57 PM
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2 things,1 Was it "hot" at any point.. as you said the temp was high? Pos head-head gasket concern from getting hot.. if it is not using coolant or pushing it out then not likely.
2 if you have good compression readings.. less then 10% difference between all cyls... with a misfire I would be looking towards a bad injector.... bad valve stem seals will not cause a miss... esp with good and repeatable compression readings. blue smoke yes misfire no.
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Old March 24th, 2010, 05:35 PM
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If you are at high altitude and not using the go pedal at all while going down a hill you will get loads of white smoke, that's very normal. But it sounds like it continued on the flat and while under power. I would suspect the timing..
Compression isn't happening at the right time.
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  #8  
Old March 24th, 2010, 06:56 PM
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Check the timing. Smoke on overrun is usually retarded timing, but can be a bad injector or pump as well.
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  #9  
Old March 24th, 2010, 07:07 PM
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I would have the injectors checked and do the valve seals at the same time. Then take it from there. Also check the timing. Do you know when the belt was changed last?
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  #10  
Old March 24th, 2010, 08:19 PM
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No, it doesn't use any water, I think the head gasket is fine. From the sounds of it what people are saying, I think I will start with the injectors first and then do timing and then do valve seals.
I don't know when the timing belt was last done, I figured if I did the valve seals I would do the timing belt at the same time.
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  #11  
Old March 24th, 2010, 10:33 PM
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To make a valve seals replacement, one need to lift the head out? and if so that head need to be checked for flatness in a shop. It might warp and you might need to have it cut back to flat. Then have a proper head gasket (right thickness). Am I mistaking on that? I think I remember have seen someone using an air line to stick that valve while removing the springs... Memories have a tendency to play some tricks!
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  #12  
Old March 25th, 2010, 07:16 AM
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hows your oil level? i blew the turbo on my 300tdi and it sucks up your oil and burns in your exhaust
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Old March 25th, 2010, 03:11 PM
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If your timing belt is getting ready to fail you might end up having to do the valve stem seals.... And the valves...
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  #14  
Old March 25th, 2010, 04:11 PM
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First rule of a timing belt with undocumented mileage, CHANGE IT.
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  #15  
Old March 26th, 2010, 01:43 AM
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Quote:
Originally Posted by KevinNY View Post
First rule of a timing belt with undocumented mileage, CHANGE IT.
Quoted for truth.
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