Does the volume of air coming out of the oil fill hole have any significance? What exactly does it mean? I opened the cap on the Buick in my sig (24 years old) and no air was coming out while running, NONE. Where as my Accord has a considerable amount of air forcefully puffing out, no oil is added between changes in the Accord, have not owned the Buick long enough to know whether or not oil will need to be added in between changed. Does this have to do with the rings? Stem seals? Both have the PCV valve replaced.
Air puffing out of fill hole, what does it mean?
- Thread starter gregk24
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The air coming out of the oil filler cap hole is likely from excessive build-up of pressure (i.e. blow-by from stuck piston rings in your 25 year old Buick) in the crankcase, whose ventilation system might be plugged up.
I'd change your PCV valve and ventilation hoses ASAP for starters. Your valve stem seals are likely hardened and letting oil by for burning in the combustion chamber.
I'd change your PCV valve and ventilation hoses ASAP for starters. Your valve stem seals are likely hardened and letting oil by for burning in the combustion chamber.
Kestas
Staff member
147_Grain, it is the Accord that has the excessive blowby, not the Buick.
I think you read the original post incorrectly. NO air from the old Buick, lots from the 2006 Accord!
I don't know if your Accord has some kind of filter between the valve cover and its breather hose. If so, the filter may be clogged with goey oil and prevent proper venting. The type filter is usually inside the valve cover and looks similar to a grease trap filter. It can be cleaned and washed out with solvents.
hotwheels
hotwheels
I had deep concern about this with my 2001 Ford Ranger. I put a small plastic bag over the fill hole and it didn't even fill up. Conclusion (in my case, yours may be different): Air was not blowing out, but the action of the valve train was creating a lot of turbulence. The valve train was exposed just a little ways under the fill hole with no shield. On another vehicle with a filler neck and a shield, I did not feel the turbulence.
I think you might have a broken vacuum hose somewhere on the Accord related to the crankcase vent system.
Originally Posted By: ram_man
It's because there is cams in the head and will blow air out of fill hole on some cars depending on fill hole location ect. The Buick has a cam in the block therefore does not whip oil in the head like the Honda design does
Exactly (and well said), and if you were used to cam in block cars, as I was, then this can be disturbing, but is no problem.
It's because there is cams in the head and will blow air out of fill hole on some cars depending on fill hole location ect. The Buick has a cam in the block therefore does not whip oil in the head like the Honda design does
Exactly (and well said), and if you were used to cam in block cars, as I was, then this can be disturbing, but is no problem.
It's going to blow! Sell it now.
Just kidding. Nothing to see here, it's just GregK24 posting.
Just kidding. Nothing to see here, it's just GregK24 posting.
Originally Posted By: gregk24
Originally Posted By: LotI
It's going to blow! Sell it now.
Just kidding. Nothing to see here, it's just GregK24 posting.
It's just a question, if you don't want to positively contribute then don't. No need to demean others.
Which question? You asked four.
Originally Posted By: LotI
It's going to blow! Sell it now.
Just kidding. Nothing to see here, it's just GregK24 posting.
It's just a question, if you don't want to positively contribute then don't. No need to demean others.
Which question? You asked four.
It is perfectly normal. /thread
Originally Posted By: gregk24
Originally Posted By: LotI
It's going to blow! Sell it now.
Just kidding. Nothing to see here, it's just GregK24 posting.
It's just a question, if you don't want to positively contribute then don't. No need to demean others.
The thing that confuses me is half of your posts are about how great Hondas are, and the other half are you paranoid that something is wrong with your Honda...
Originally Posted By: LotI
It's going to blow! Sell it now.
Just kidding. Nothing to see here, it's just GregK24 posting.
It's just a question, if you don't want to positively contribute then don't. No need to demean others.
The thing that confuses me is half of your posts are about how great Hondas are, and the other half are you paranoid that something is wrong with your Honda...
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