valve cover puppet show

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I'm watching this and giggling. Uncontrollably.

I have a '62 Falcon with a '67 200/6. I have a two barrel carb and some headers. My valve cover is the generic blue job with a pcv valve in the rear and a chrome filter cap up front.

I couldn't help but notice that the top of my engine and surrounding devices keep getting dusted with oil. Apparently the filter cap keeps loosening up and allowing combusted soot-spew to leak all over the place.

It isn't exactly popping off. But its not exactly staying put. I'm getting tired of cleaning.

What gives?
 
Make sure that it seats really well. You may have to bend the tabs. There is definitely oil getting splattered around in there, no doubt about that. Ever run an engine with the valve cover off? =D
 
master fabricator Mark Stielow once bragged in the mags about using sweat bands to keep the C-brand engine in his '69 C-brand pro tourer from puking oil out of them breathers when competing in One Lap of America.
 
Oil coming out of the breather cap most likely means that the combustion gasses are escaping the combustion chamber and pressurizing the crank case. The gasses will vent thru leaking gaskets and the breather tube. Obviously the amount of gasses going into the crank case is greater than the flow capacity of the PVC system to suck back into the engine. My guess is bad rings.
 
I ran my 66 200 for 10 minutes or so at idle and was supprised that only a few drops splashed out but that was at idle so I imagine with a bit more pressure and faster moving parts it could get messy. Most of the splashes on mine came from 2 pushrods that seemed to spin faster than the rest. On mine the breather cap always ends up being pushed back a bit I assume just from air pressure at high speeds but thinking about it if there was that much air pressure under the hood you would think that a lot more stuff would get blown around like plug wires and such. If you got stuff coming out the breather you do have more blow by than the pcv system can handle and there is not much you can do if the pcv is working properly other than dealing with the mechanicals of the engine. You could try a pcv valve from a larger engine (v8?) that will flow more air but you will then need to retune your carb to compensate for the extra air. You could try some other sort of cap that has more baffles and filter stuff in it to try and trap more of the oil.
 
I used a hole saw and drilled a hole in the vent cap large enough to
accept a grommet and pcv valve, That helped alot as i have enough pressure buiding at idle that my engine smokes at idle. I am pretty sure my rings are shot, but it doesn't fowel plugs and runs really well.

Oh and does anyone know the safe high rpm for a 144?

Tom
 
I was having the same problem after sustained highway driving. I solved it by routing my pcv valve to the intake manifold. Creating a vacuum in the crankcase you pretty much solve that problem, along with a couple of other related issues. It made the engine run smoother. Theoldone.com had an article explaining why this is an important thing to do, but I can't seem to find it now.
 
I was giggling just because of the absurdity of it all. Typically when bad things happen I can't help but take a macro view of the whole thing and just laugh a little.

My PCV already went to the intake manifold.

So rings then! I'll change them when I buy of one the new aluminum heads when they become available.

No sense in taking the head of twice.
 
Hmm.

Today I finally got around to running a compression test. It all looks really good, much to my surprise. I have between 170-180 lbs of pressure for each cylinder. This is good, right?

Does this have any bearing on my problem?
 
As far as I can see it does. I've replaced it a couple of times with no change. I also have a brand new vacuum tube going straight from the valve to the intake manifold.
 
put a new pcv valve in anyway there only a few $$$
do you have a gasket on your filler lid? are you over filling the sump? is the hose on the pcv blocked up or reduced
 
I have a new bit of hose and its clean and unobstructed. I've tried new pcv valves. I wouldn't mind trying a different kind with a different weight, but I'm not sure what would retrofit.

Can you clarify about a gasket on the filler cap?
 
spankmeister7":28e39360 said:
Can you clarify about a gasket on the filler cap?
Click to expand...
On some filler caps there is a rubber gasket that goes between the cap and the cover. If the gasket is missing you could be losing oil from between the two as they wont be sealed together.

-ron
 
what he said
just take one to a parts shop a wreaking yard and go through them all.
have you tried t piecing the hose run 1 to your aircleaner 1 to the bas of the carby.
also on my 250 log and 2v i have them both vented to atmosphear and have very little oil come up with around the same comp ratio's
if i bloked the front then id have no drama (vented cap)
one more thing that sometime works is connect the front and back up into one hose then to the carby.
but if you got no gasket on filler then your pushing an elephant up hill.
 
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