I replace the spark plugs on my 07 aveo and find that one of them is soaked with oil on the thread. There is no oil in the spark plug tube, though. Any help for diagnosing and fixing it would be appreciated.
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I replace the spark plugs on my 07 aveo and find that one of them is soaked with oil on the thread. There is no oil in the spark plug tube, though. Any help for diagnosing and fixing it would be appreciated.
I have the same thing. My dealer told me it was the valve cover gasket leaking.
what do you mean by spark plug tube? it could be a drip of oil seeping to there from a valve cover gasket, or a spill filling, etc.
If the pug does not foul, the oil stays at capacity, and it doesnt happen more profusely i wouldnt worry about it too much.
I did compression tests (both wet and dry tests) and found that the cylinder where the spark plug has oil on the thread has very good compression, pretty much the same as the others. One thing that I don't understand, though, is that one of the dry cylinders (the one where plug has no oil on the thread) has 30% less compression than the rest for the dry compression test. The wet compression pressures are pretty much the same for all cylinders. This means that the piston rings aren't the root cause of my original problem. So, it's boiled down to which cylinder has a bad valve seal. The one with oil on the plug's thread or the one with 30% less compression. Man, I'm confused.
or its fine and the cylinder "lost" pressure as you were continuously cranking it over without it running in between..
Hi, I have the same problem with my 06. Pulled the plugs out and they were totally oil soaked. I think it might be more than a gasket, I'm thinking valve guides or seals. I just put new plugs in it and I will check it once a week, when they get soaked again I will take it to the dealer ( I bought an extended warrenty) I will report my findings later. This should not be happening at 45000 miles!!!!!!!!!
same happened with my 05.. we ripped the valve cover off and found the gasket wasnt sealing. so we put gasket back on as it was still good.. and siliconed it. fixed
If there is oil on the plugs, it is the valve cover gasket, nothing more, nothing less (for the posts above mgwalke's) I do not see the problem, it is a cheap fix.
Yep my 04 just had the same thing.Quote:
Originally Posted by thehunterooo
I had the same problem, just need new valve cover gasket.
I've just replaced my valve cover gasket as well, its pretty simple. The gasket is about $30 plus $5-7 for silicone.
What is that? I didnt used it.Quote:
Originally Posted by khan4rtist
its applied to the corners of the gasket to prevent leaks since the corners of gaskets are prone to leaks. just a precautionQuote:
Originally Posted by kashak
just a note it needs to be high temp oil resistant silicone, like gasket maker supplied at your local parts store.personally i usually use a little on both sides of the gasket before i put it together as xtra precaution on all my gaskets.Quote:
Originally Posted by khan4rtist
Sorry to keep this old thread going but I too have discovered oil on spark plug tubes 3 & 4. Everyone says it just a valve cover gasket that needs to be replaced but wouldn't the tube seals also need to be replaced? It looks like that would be the main cause of the oil leak but then again I am no mechanic so the possibilities of me being wrong are pretty good.
some engines have separate oring gaskets for the spark plug tubes and some just have a 1 piece this is the aveo 1.6, spark plug tubes are sealed with the 1 piece gasketAttachment 5355
Ahh, all in one....thank you for the insight! :)Quote:
Originally Posted by charlieb
Thanks for this info.I'm going to try it out.
What's the correct spark plugs to be used in a 2008 chev aveo 1.6?Do I've too use what the manual says?:confused:
Just look for the spark plugs online, the sites will also tell you the correct gap as well (and on the plugs when you recieve them)
2008 - Spark Plugs - AVEO - CHEVROLET - SummitRacing.com for example, just google it, you will find a ton of different brands.
Go by whatever manual says in short :D
Though, how does shipping work over there exactly? Do a lot of companies ship to your location?