more questions: PCV Valve and Grommet
- Thread starter gillti
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You sure you don't have the grommet? Without the grommet I don't see how the PCV valve will seal to the engine. I don't think this would hurt the performance of your engine, unless something like water or debris got into your engine.
I didn't think I had a grommet, until I got close enough to see that the grommet had hardened. I thought it was part of the metal tube that holds the PCV until I broke part of it off. I had to carefully chip it into pieces to remove it.
I didn't think I had a grommet, until I got close enough to see that the grommet had hardened. I thought it was part of the metal tube that holds the PCV until I broke part of it off. I had to carefully chip it into pieces to remove it.
- Thread starter
- #3
i'm almost positive it is not there, the size is way too big for the pcv valve. It just flops around in there.
the 60 is in the shop, but I've pm'd cdan in order to get a new grommet. From the pic on sor I sure don't think I have one. when I get it back you can bet it is the first thing I will check. I've been reading more on this with search, I worry about build up of gasses, if it is just open, would that be a problem?
tjg
the 60 is in the shop, but I've pm'd cdan in order to get a new grommet. From the pic on sor I sure don't think I have one. when I get it back you can bet it is the first thing I will check. I've been reading more on this with search, I worry about build up of gasses, if it is just open, would that be a problem?
tjg
The PCV system is used to collect the blowby gasses and bring them into intake manifold so they will be (re) burned during combustion. The PCV valve regulates the amount of gas that is recirculated to the intake based on engine speed. As long as the top of the PCV valve is connected to the hose that crosses over the engine and connects to the base of carburetor, then the flow into the intake is being controlled properly. A loose valve fit a the engine mainly means that some of the blowby will leak out, which is bad for the environment, but not necessarily bad for your engine. However, since the gas that goes through the PCV valve into the intake is not filtered, there is a small chance that debris can get into the intake. And there's the chance that something will fall into your engine. So it's best to put a grommet on there.
I replace the PCV and grommet every time I change the plugs. It's cheap. You can also clean the PCV with solvent such as B-12. They get gummed up and the valve either sticks open or shut. Most often they just need to be cleaned. You can do this as often as you like. FYI: when clean or new the PCV valve should rattle when shook. This means it is working.
Ummm,
The PCV valve doesn't really 'regulate' flow, more like keeping any 'backfire' from tavelling to the crankcase & boom with the oil vapours.
You may fine when you replace grommett, the engine to run slightly differently.
( emphasis ion "may" and "slightly")
carb settings compensate for 'air inleakage' through PCV - air into 'engine' is thru air cleaner which is at a slight vacuum. crankcase is, therefore, at a slight vacuum. with missing grommett, air flow into intake manifold, thru PCV is more then when crankcase is sealed.
( you notice on a correct system, a change in engine when the oil filler cap is removed...too much fresh air....should respond like a very mild vacuum leak)
The PCV valve doesn't really 'regulate' flow, more like keeping any 'backfire' from tavelling to the crankcase & boom with the oil vapours.
You may fine when you replace grommett, the engine to run slightly differently.
( emphasis ion "may" and "slightly")
carb settings compensate for 'air inleakage' through PCV - air into 'engine' is thru air cleaner which is at a slight vacuum. crankcase is, therefore, at a slight vacuum. with missing grommett, air flow into intake manifold, thru PCV is more then when crankcase is sealed.
( you notice on a correct system, a change in engine when the oil filler cap is removed...too much fresh air....should respond like a very mild vacuum leak)