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#1
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oil not getting to all the cams on m103 eng
I am returning to ask a follow up question concerning noise in engine.
I have a 1989 300sel. I had valve/rocker noise so I removed valve cover and the oil distributor(piece on top of cam with little holes-3 small bolts to remove) and cleaned it up/out or so I thought. Anyway there was crap on the rocker assembly so I cleaned them up, put oil on all cams and replaced everything. Started up and no noises at all! Thought I cured my problem. But, alas, after a few miles, the noise returned. Question....does this mean oil is blocked somewhere, not allowing it to get to rocker assembly? how does the oil get distributed? What can be done...short of overhaul? Thanks in advance Warren |
#2
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take valve cover off again and check all the bolts holding the rocker assemblies to head.they are known to pull threads and come loose.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg |
#3
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Thanks...I did do that...no change
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#4
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What brand and weight of oil are you using?
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2006 BMW M5 "Heidi" @ 109,000 miles 2005 MBZ C55 AMG "Lorelai" @ 165,000 miles 1991 MBZ 300E "Benzachino II" @ 165,000 miles 1990 MBZ 500SL "Shoshanna" @ 118,000 miles (On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!) |
#5
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M103's like heavy duty oil. I run Rotella synthetic 5w40 diesel oil in mine and it runs smooooth, even with 151k on it.
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#6
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you mean like delo 400??? what grade should I use??? Or Rotella...
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#7
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i use 15w-40 in ours ... i think delo is 8.50 gallon at wal mart... others are about 12.
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC] |
#8
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I use synthetic because I like to drive it pretty hard sometimes (why else would I own a gasser? ) and for the cold start lubrication when it is 0F outside.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#9
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Have the valve cover ready to remove (take all bolts and hoses off). Idle the engine, shut it off, and look to see if there is oil coming out of the galley or tube or whatever you want to call it.
If it's dry, then the oil passage to that tube is probably blocked, probably at the head gasket? The oil comes up in to that small nipple on the bottom of the tube. Gilly
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Click here to see the items I have up for auction at EBay Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold) |
#10
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Nipple? is that the post that the "what ever" we call it is attached to the head? There is a curved tube at the end of the oil gallery but the line curves up towards top of valve cover...I am confused!!!
And if the oil is blocked from head gasket....what are my options??? Thanks for your helpful advice Warren |
#11
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Oil enters this sheetmetal tube (you prefer to call a gallery, I can tell we are using different terms for the same thing) through a very short piece of pipe. This very short piece of pipe should be "down" facing the head and enters, oh heck, you figure out exactly where, I want to say a hole on one of the rockers. Is thereone rocker that is different? Heck I can't remember, but I do remember that the "gallery" goes on only one way, not only because of the 3 bolts, but because of this nipple that the oil enters.
Start examining the installation and see if it's possible you have this gallery installed backwards and upside down. Gilly EDIT actually you seem to know that the small holes that drip oil have to be facing the cam, so it's hard to believe it's upside down. The only curved tube I can remember is that vent thing on the underside of the valve cover itself, so not sure what you mean by "curved" tube. The nipple is a very short piece that fits in to the engine where the oil comes up and enters the "gallery". OH and if it's the head gasket, well, we'll cross that bridge when we come to it. Possibly there is sealant blocking the oil galley coming up through the head and you can try cleaning it out somehow, without disassmbly.
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Click here to see the items I have up for auction at EBay Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold) |
#12
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Ok I am going to follow your advice, check it out....thanks for staying with me.....
Be back |
#13
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post pictures, it will be helpful...
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1993 300E, 2.8 M104 ..... |
#14
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if the rocker assemblies have been off the head and one set has been put back incorrectly it could starve that assembly for oil.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg |
#15
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I removed valve cover and oil feeder line(over cams) cleaned and tested for blockage, sat valve cover back on head and started engine, idled and shut off. Oil is coming up thru nipple, so rail is feeding properly.
Put back together...started, I still have the noise...can the timing chain be adjusted? |
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