CCV Mod Problem, Maybe?
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New User
Joined: May 2006
Posts: 19
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CCV Mod Problem, Maybe?
I did the CCV mod a couple of years ago and no problems, so far. Last week, the temperature outside was in the lower teens and snow was piled up about two feet. I had the block heater plugged in, so it started easily. I drove it about 10 miles and when I parked in a parking garage, I noticed a steady oil drip from underneath. I had an appointment to go to, so I figured I would crawl under the truck when I got back. I did, and I couldn't see anything. I checked, and there was no oil on the dipstick. I put in about 7 or 8 quarts of oil, fired it up and drove it straight to my mechanic, about 3 miles away. No oil leak when I got there. They put it in the shop and let it warm up overnight. Since then, the temperature outside has warmed into the mid 30s. They can't find a leak. Although, there is oil everywhere. Part of that is my fault. When I added the oil, it kept overflowing out of the filler tube on the cold day. They drove it around for an hour or so on a "warm" day, and still no leak. So, my question is... could the CCV mod hose have had enough oil residue in it to freeze up and cause this problem? The truck is a 2000 F350 dually 4x4 7.3L diesel.
Master of Strokes
Joined: Mar 2007
Posts: 6,808
Likes: 25
From: CA
Generally not unless you have a low point where oil / water could be stagnant and then freeze. Did you look at the oil cooler? In cold weather the old o rings get brittle and don't tend to seal well and opon first start up leak.
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
Not only that, but oil overflow'n the fill tube, cant be good. I'd say yuo got WAY too much in there, thus blowing/starting to ruin seals.
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New User
Joined: May 2006
Posts: 19
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I ran the hose over the hydraboost so it would allow the oil to drain back into the valve cover. There may be a low point where the hose makes a 90 degree bend to go under the truck. I usually start the truck and then check the end of the hose to see if air comes out of it. Didn't have time that day. I will look at the oil cooler this evening. When I ran it over to the mechanic, the oil pressure looked good on the gauge.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I cant see ccv causing that much oil loss...
Meanwhile, I hated the ccv delete!! It stinks and smokes in cold/wet weather. Horrible 'mod' with no benefit imho.
Meanwhile, I hated the ccv delete!! It stinks and smokes in cold/wet weather. Horrible 'mod' with no benefit imho.
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Senior User
Joined: Feb 2006
Posts: 441
Likes: 0
From: Byron, IL
I am having the same problem with mine again.. Is there a better way to run the CCV so that it wont freeze up and cause the leaks???
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Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
If you have the hose going over the HB master cylinder then straight down of sorts then thats the best way. If your running it down from there then along your frame rail to the back, thru those dips in the hose condinsation can form and blockage occurs, not all but it can happen. Oil blown out the exhaust side of the turbo into the exhaust I believe is a tell tail sign.
