H20 in PVC catch can???
Thread Starter
TECH Veteran
Joined: Aug 2002
Posts: 4,055
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From: Hartsdale, NY
H20 in PVC catch can??? I recently failed NY State inspection for excessive hydrocarbons (H/C car with LT heades)
I tuned the car with LS1 Edit reducing the LTRIMS to slightly negitive. I then drove 2000 miles on vacation. During the trip, I filled the gas tank with a double shot of carberator cleaner on each tank full.
Upon returning , I inspected the PCV oil catch can and found about one teasoon of crankcase oil and about 1/4 cup of water!!!!!
I assume the water came from the addition of carb cleaner to the gas, but I not sure.... the car runs great; there is no oil or water in the crankcase oil or radiator and the car runs great...
I added a fresh tank of 93 octane gas with no carb cleaner and 12 small cans of methonal (dry gas) to 1/4 tank of fuel for the emmissions re-test which will be done today....
..Any thoughts on the water in my PVC catch can?????
Thanks...
I tuned the car with LS1 Edit reducing the LTRIMS to slightly negitive. I then drove 2000 miles on vacation. During the trip, I filled the gas tank with a double shot of carberator cleaner on each tank full.
Upon returning , I inspected the PCV oil catch can and found about one teasoon of crankcase oil and about 1/4 cup of water!!!!!
I assume the water came from the addition of carb cleaner to the gas, but I not sure.... the car runs great; there is no oil or water in the crankcase oil or radiator and the car runs great...
I added a fresh tank of 93 octane gas with no carb cleaner and 12 small cans of methonal (dry gas) to 1/4 tank of fuel for the emmissions re-test which will be done today....
..Any thoughts on the water in my PVC catch can?????
Thanks...
That's an awful lot of water for just blowby
condensate. But you might draw humid air
through the PCV and drop the water. The
presence of DexCool in the glop would tell
you whether it's internal leakage or just
dew. Colder, foggy weather can push a lot
of water through the system.
The methanol would take up any fuel tank
water and bring it to the cylinders to be
part of blowby. Also makes a higher H2O /
CO2 fraction in the exhaust gas for blowby.
Light hydrocarbons have more hydrogen
per molecule.
Did you switch to a fresh, heavier oil for
your retest?
condensate. But you might draw humid air
through the PCV and drop the water. The
presence of DexCool in the glop would tell
you whether it's internal leakage or just
dew. Colder, foggy weather can push a lot
of water through the system.
The methanol would take up any fuel tank
water and bring it to the cylinders to be
part of blowby. Also makes a higher H2O /
CO2 fraction in the exhaust gas for blowby.
Light hydrocarbons have more hydrogen
per molecule.
Did you switch to a fresh, heavier oil for
your retest?
Alcohol is very hydroscopic, meaning it absorbs water. So the menthanol you added to the tank probably just made existing water in the bottom of the tank mix with the rest of the fuel and come forward to the engine.
Thread Starter
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
....the oil change now has 2K miles on it....I added a quart of heavy gear oil (90 wt) to the synthetic Moble One 10-30....
...the oil is still clean, however, so I'm going with it and hoping for the best....
...the oil is still clean, however, so I'm going with it and hoping for the best....
You are better off on an emissions check to have straight synthetic oil. It burns at such a high temperature, that very little of it actually burns after getting in the combustion chamber; it is just vaporized and blown out the the exhaust causing zero contribution to emissions.
Gear oil? Yikes!
I'm not liking the idea of what a bunch of
metal & sulfur might do to the cats & O2s.
If this is the normal gear oil that has lots
of molybdenum disulfide in it....
I'm not liking the idea of what a bunch of
metal & sulfur might do to the cats & O2s.
If this is the normal gear oil that has lots
of molybdenum disulfide in it....
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Verdad Gallardo Thread Starter
TECH Veteran
Joined: Aug 2002
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From: Hartsdale, NY
I'm still confused about the H20 in catch can. It did not contain any pink residue from the cooling system,,,, just straight water....
weird since I have had a catch can on for many months and I never got much of anything in the can...
I recently did an oil analysis by Blackstone labs after the head and cam swap.....they said everything is great!
weird since I have had a catch can on for many months and I never got much of anything in the can...
I recently did an oil analysis by Blackstone labs after the head and cam swap.....they said everything is great!
Originally Posted by robertbartsch
I PASSED!!!!!!
...car was tested with an LS1Edit tune and 12 bottles of dry gas (methonal) and some really thick crankcase oil....
I am SO happy!!!!!
...car was tested with an LS1Edit tune and 12 bottles of dry gas (methonal) and some really thick crankcase oil....
I am SO happy!!!!!
