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new smoke
by
Malacaco
on 11 Oct, 2006 11:28
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hello everyone. Recently my car has been smoking badly. it's a blue color smoke and it's more noticeable when it's not at normal temperature. when it is i notice that it smokes a little when the turbo kicks in. im suspecting that the turbo is a little "tired" but i can't seem to find any performance loss. It whistles a lot but it always did that. what do you think, could be the turbo or maybe the injection? The car is a Mk1 1.6 td.
Note: i can't be sure if the smoke is really blue or a little greyish. with the car parked and revving it up i dont see any abnormal smoke than the usual black one...
Thanks in advance
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#1
by
SMOKEYDUB
on 11 Oct, 2006 15:47
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my guess would be the turbo but pull the air tubes off and see if there full of oil. if they are stick it bac together and start the engine. while the engine is running pull the oil fill cap off and look how much is puffinf out there. i have seen oil almost spraying out of there on a tired engine,and on a nice tight one there will only be a small amount of air.if there is a good huff coming out of there when the cap is on and you are driving it that chuff will be passing through the little hose that comes off the valve cover and goes into the turbo inlet causing to burn oil. if you pull the oil cap off and it seems to be all in good condition then your turbo seals are probably screwed.
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#2
by
Malacaco
on 15 Oct, 2006 17:01
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thnx buddy, i'll do that
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#3
by
Malacaco
on 17 Oct, 2006 10:49
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i've checked all the things you've said, when i pulled off the oil cap, there were some sprinkles occasionaly in the camshaft protection, but then the big question: i've checked the oil and the level is on the top mark, so it can't be oil. what the hell can it be?
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#4
by
Malacaco
on 17 Oct, 2006 10:51
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water levels are good too
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#5
by
jtanguay
on 17 Oct, 2006 11:07
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its probably bad compression or an injector. Turbo whistle is what you want to hear
does the blue/white smoke go away when the car is warm?
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#6
by
Malacaco
on 17 Oct, 2006 17:31
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yes, when the car gets at normal temperature the smoke holds on a bit except when the turbo kicks in and it whistles a lot, but it's a k24 and it always whistled a lot. Bad compression? that sounds seroius :shock:
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#7
by
jtanguay
on 17 Oct, 2006 17:39
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well don't want to ruin your night or anything... but my old jetta had blue smoke on cold starts (really bad compression)
i wasn't too sure of the state of the injectors on that car, but the compression was sitting at around 320-ish... and I think that is being very generous :lol:
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#8
by
Malacaco
on 17 Oct, 2006 17:54
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well, tell me the cure. But could it be only an injector. because the engine sounds a bit "spongy" at idling. but otherwise it runs pretty well. no performance loss at all
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#9
by
jtanguay
on 17 Oct, 2006 21:08
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it could be an injector... or two... like i said on my old car i never had the injectors checked out. car ran extremely well and easily pulled all the way up to 160km/h on the highway (and it stayed there quite nicely...)
but on the other hand... it was a tired engine with new rings.. (could have had good compression at first, but it did not like starting in the cold.)
come to think of it... the glowplugs might have been bad
but compression was still around 360 or so... at most
testing for just one injector is pretty stupid unless you own a pressure tester. i'd say just get them all rebuilt and be done with it for a long time.
testing your compression couldn't hurt either... just 4 heat shields, and the compression tester itself
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#10
by
Malacaco
on 18 Oct, 2006 04:33
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Im going to a Bosch car service today and have all the injectors checked. There are only two things right now on my mind, first the nozzles are bosch brand new and have about 10.000 miles (16.000 km), but at begining the timing was advanced for about 700 miles before it was fixed so it could have hurt the injectors, and second you talked about your jetta having difficulties in cold start, mine hasnt, it starts very easily and i almost dont have to pull the manual accelerator, so my guess goes to the injectors. the engine has a total of about 100.000 miles so i think it's a little early for the engine to be tired, wouldn't you agree?
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#11
by
Malacaco
on 18 Oct, 2006 04:34
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one more question, what are the standard compression values for a non-tired engine?
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#12
by
burn_your_money
on 18 Oct, 2006 09:41
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it all depends on how well cared for your engine was
I think anything above 450 is acceptable
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#13
by
malone
on 18 Oct, 2006 11:42
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If I recall correctly the compression wear limit according to a Bentley manual is 415 PSI.
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#14
by
myke_w
on 18 Oct, 2006 12:11
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it's more noticeable when it's not at normal temperature
What's normal temperature?
You mean it happens when the engine is cold? or when it's cold outside?