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CCV Hose Collapsed-and Need Help Attaching oil separator Hose
1. One of the CCV hoses completely collapses when the engine is running. When I pull the dipstick, I can feel a lot of suction. I plan to replace the CCV diaphragm only (edit: and hoses). Given the hose is collapsing and has lots of suction, should I be looking at other issues? The hose is very soft so it doesn't take much to collapse but concerned there is too much suction. Any reason to replace the entire CCV instead of just the diaphragm? 2. Hose #9 that attached to the bottom of the oil separator I wanted to check and replace (see lots of posts where this hose goes bad or gets plugged). How in the heck do you get to the connection where that hose attaches to the tube back to the oil pan? I cannot even see the clamp it's so hidden. Last edited by Explorerlyon; 08-23-2022 at 05:02 PM. |
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#2
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Can’t say why the hose is collapsing, except perhaps it sounds like the system is plugged at the other end somehow. I’m not sure how too much suction could be created by the system. You could put a vacuum gauge on it. Or just throw a new separator, hoses and valve on it as the parts aren’t too expensive for a full refresh of the system. Especially because you may need to do some disassembly just to do the small hose if you aren’t Stretch Armstrong.
As far as connecting number 9…it’s a full on PITA. Pull the cowl first and see if that gives you enough room to maneuver. Lube up the hose end and the end of the pipe, and use a long, long offset pliers to wiggle the hose onto the return tube. If not you could pull the intake, which will give you more room, and allow you to replace hose 12 too. Mine had disintegrated on the motor I pulled from my X5. Just be careful not to break the nipple off (by “13”) where it attaches. I was able to drill the hole out slightly and JB Weld the nipple back after I snapped it off by not being careful. You could also try to unbolt them separator from the back of the intake (might as well replace it at this point) and see if it is easier to attach hose 10 with the separator loose. Then you could reattach it and connect the top hoses.
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Current Original owner 2002 E53 X5 4.4i to 4.6i swap 1993 Mopar 318 Jeep Grand Cherokee - original owner 2015 V6 Jeep Grand Cherokee - the nice car for my wife Former 1972 Audi Fox 1986 Saab 900S 1996 BMW Z3 1998 BMW E36 M3 Sedan 2004 BMW E46 M3 2006 Audi A3 Quatro Last edited by Henn28; 08-23-2022 at 03:13 PM. |
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Quote:
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Quote:
Pulling the intake makes some things easier, but who knows what you’ll find under there! Also, the whole thing needs to come back together at the same time…in that the head has to go back on at the same time the hoses get reattached. A helper could make the difference.
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Current Original owner 2002 E53 X5 4.4i to 4.6i swap 1993 Mopar 318 Jeep Grand Cherokee - original owner 2015 V6 Jeep Grand Cherokee - the nice car for my wife Former 1972 Audi Fox 1986 Saab 900S 1996 BMW Z3 1998 BMW E36 M3 Sedan 2004 BMW E46 M3 2006 Audi A3 Quatro |
#5
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Can you put something down the middle of the hose that helps align it? Maybe 3/8" bent rod. Then using something like a 1/2" conduit with a washer tack welded to the end, push the hose down.
NAPA has a product called Syl Glide that comes in real handy for moments like this.
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2001 x5 3.0 (sold with broken motor), 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed, |
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Quote:
I was under my car doing the control arms/wishbones yesterday and realized too that it would be very easy to unbolt the return line from the oil pan, and at the top of the line from the head, then pull it up, attach the hoses and bolt it back in. Kind of last resort maybe, but no harder than pulling the intake, and probably easier. The banjo bolt is in plain sight by the starter heat shield with the car in the air and the wheel off. I’d definitely use a new crush washer and be careful re-torquing the banjo. I can’t recall if Bentley has the torque numbers for this one I think, but it is similar to one of the power steering banjos in size, if I recall, and those are in the book.
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Current Original owner 2002 E53 X5 4.4i to 4.6i swap 1993 Mopar 318 Jeep Grand Cherokee - original owner 2015 V6 Jeep Grand Cherokee - the nice car for my wife Former 1972 Audi Fox 1986 Saab 900S 1996 BMW Z3 1998 BMW E36 M3 Sedan 2004 BMW E46 M3 2006 Audi A3 Quatro Last edited by Henn28; 08-25-2022 at 10:26 PM. |
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I used something similar on my 3.0 CCV. It was a 1/2" conduit ~24" long with the end smashed and a 1/4" notch ground into the end. I caught the notch on the metal flap similar to the one between 11 and 13 above. I was able to push that hose onto my dipstick tube with much greater ease than anything else I tried.
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2001 x5 3.0 (sold with broken motor), 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed, |
#8
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Ar least we can agree that the only place worse to put the ventilation system would be under the timing chain covers…oh, wait…sorry 540 guys.
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Current Original owner 2002 E53 X5 4.4i to 4.6i swap 1993 Mopar 318 Jeep Grand Cherokee - original owner 2015 V6 Jeep Grand Cherokee - the nice car for my wife Former 1972 Audi Fox 1986 Saab 900S 1996 BMW Z3 1998 BMW E36 M3 Sedan 2004 BMW E46 M3 2006 Audi A3 Quatro |
#9
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Good news..hose #9 that I was worried about has been previously replaced. I removed the air/oil separator (#1 in the diagram) for better access and could feel the hose was in good shape. I then ran a piece of trimmer line down the hose towards the oil pan...all clear. I am going to leave that hose as is and replace the air/oil separator, along with the two hoses above that collapse.
The CCV...I saw several posts and youtube videos where just the cap with the diaphragm was removed. Mine is different than the cap in those videos and not sure I can just swap the diaphragm and cap. Thoughts? |
#10
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I ended up just pulling the intake manifold. Should have done that to start with. It really was not that bad removing it and made everything else easier. Found a LOT of oil inside the intake and oil under the intake. Oil was draining out the two weep holes in the back of the valley where coolant leaks out when the valley pan leaks. Ended up replacing:
CCV Air/oil seperator Hoses Intake manifold gaskets. Hopefully, all is good now. |
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