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blue/black smoke

 
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Old 02-04-2010, 12:58 PM
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blue/black smoke

Ok I just started my car and gave it a little rev and notied alot of smoke coming out. I revved it a bit more and there was alot of blue/black smoke coming out of it! The fuel smelt really rich aswell. I checked my oid and it seems ok and there's no sign of any milkyness. Does anyone know what this could be?

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Old 02-04-2010, 01:05 PM
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Re: blue/black smoke

blue smoke is oil. black is too rich.

this just happened all of a sudden?
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Old 02-04-2010, 01:07 PM
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Re: blue/black smoke

It could be Oil.... Or too rich
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Old 02-04-2010, 02:10 PM
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Re: blue/black smoke

Well I haven't noticed it before. The oil burns quick but nothing more then i'd expect from the vtec. Any idea what it could be?
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Old 02-04-2010, 06:13 PM
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Re: blue/black smoke

can you smell fuel when you sniff your oil? if so, don't start the engine and call a mechanic...

if not...the problem could be a bad fuel pump, leaking fuel injector, or possibly computer or a sensor...Have you checked your fuel mileage? If this is a persistent problem, you may see a decrease in your fuel mileage...which would be indicative of the car running rich...

just a thought...hope I don't sound like a complete dumbass here...just thinking out loud...LOL
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Old 02-04-2010, 07:05 PM
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Re: blue/black smoke

Sounds like your running alittle rich or you might have compression problems...just my .02
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Old 02-05-2010, 02:52 AM
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Re: blue/black smoke

Oil rings, Valves ? when your car is just sitting there in idle for a couple of minutes and you rev it does smoke come out? if so could be valves? I have an accord that when I start it from it sitting for a bit blue smoke comes out. Ive been told it was valve seets. Its got 234,000 on engine so I can see that happening.
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Old 02-05-2010, 05:30 AM
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Re: blue/black smoke

Hey guys thanks for the help. I've just had a closer look at the oil and it's a milky brown colour. Looks like it is the head gasket! Has anyone done one of these before? Is it more complicated then a normal engine?
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Old 02-08-2010, 04:24 PM
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Re: blue/black smoke

update. i took it to the garage and it turns out it wasn't the head gasket. Aparantaly it's the valve stem oil seals. Which if i'm honest I have only just heard of. The thing is i'm not sure if I believed him. I don't think he gave it a proper diagnostic. He seemed a bit unsure. Can anyone help?

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Old 02-08-2010, 04:53 PM
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Re: blue/black smoke

At our garage we have a kit to check for blowen headgaskets.We Put this chemical in this bottle that has a pump on one end and insert the other end into the radiator. while car is running we pump the bottle and it will detect if there is any exhaust fumes coming through the radiator do to a blowen headgasket. I personally havent used this kit at our work but the other emlpoyes have.Now valves seals can go bad and you can leak oil past them and blow smoke out of the tailpipe. My green honda accord will do that after it has sat for a bit. I personaly would take it to a second shop for another opinion. Hope this helps.
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Old 02-08-2010, 05:00 PM
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Re: blue/black smoke

Yeah that's a big help thanks. So is the valve seal a major issue? Thing is, I know the head would have to come off and that means the head gasket and timing belt. So it's even worse I suppose.
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Old 02-08-2010, 05:21 PM
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Re: blue/black smoke

Just google valve seals on the internet and all the info on what is involved in the prosses is at you finger tips! If you have never done this ( replace valve seals and or head gasket) take it to a shop. It can get involved and if you dont no what your doing you can screw the the engine up. Valve adjusting, timing, tork specs,special equipment to just name a few things. To me from what i have read sounds like vavle seals and blown headgasket. If you have a blowen headgasket then its always a good thing to take the head to a shop that can check for cracks or a warped head. If its warped they might be able to shave the head? Now im not saying the gasket is blown ect. But from my guess it sounds to be.But usually a blown headgasket means white smoke. So take it to a reputible shop for a second opinion. Hope this helps.
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