Camshaft not getting oil
#31
#32
#33
Hmmm, so what happens to the oil pressure when the journals for the cam are ground down to nothing? It drops. Then what happens to the oil pump screen as it collects the shavings? It plugs. Then what happens to the pump when the shavings that make it past the screen get into it? It gets smoked. This is kindergarden *****. One more, doesn't an oil filter have a bypass? Yes. Quote:
PRIMARY FILTERS
Primary filters are standard on most engines. They are also called “full-flow” because 100% of the engine oil passes through them in normal operation. The filters must work without introducing a lot of restriction, or else oil will not flow into the engine during cold start-ups. This is one reason the full-flow filter allows passage of the comparatively small contaminants; trying to catch everything would restrict flow.
If blockage occurs in the filter, bypass valves open. This allows oil to go around the filter and back to the engine. In this situation, lubrication with unfiltered oil is better than none at all.
PRIMARY FILTERS
Primary filters are standard on most engines. They are also called “full-flow” because 100% of the engine oil passes through them in normal operation. The filters must work without introducing a lot of restriction, or else oil will not flow into the engine during cold start-ups. This is one reason the full-flow filter allows passage of the comparatively small contaminants; trying to catch everything would restrict flow.
If blockage occurs in the filter, bypass valves open. This allows oil to go around the filter and back to the engine. In this situation, lubrication with unfiltered oil is better than none at all.
#34
Hmmm, so what happens to the oil pressure when the journals for the cam are ground down to nothing? Then what happens to the oil pump screen as it collects the shavings? Then what happens to the pump when the shavings that make it past the screen get into it? This is kindergarden *****. One more, doesn't an oil filter have a bypass? Yes. Quote:
PRIMARY FILTERS
Primary filters are standard on most engines. They are also called “full-flow” because 100% of the engine oil passes through them in normal operation. The filters must work without introducing a lot of restriction, or else oil will not flow into the engine during cold start-ups. This is one reason the full-flow filter allows passage of the comparatively small contaminants; trying to catch everything would restrict flow.
If blockage occurs in the filter, bypass valves open. This allows oil to go around the filter and back to the engine. In this situation, lubrication with unfiltered oil is better than none at all.
PRIMARY FILTERS
Primary filters are standard on most engines. They are also called “full-flow” because 100% of the engine oil passes through them in normal operation. The filters must work without introducing a lot of restriction, or else oil will not flow into the engine during cold start-ups. This is one reason the full-flow filter allows passage of the comparatively small contaminants; trying to catch everything would restrict flow.
If blockage occurs in the filter, bypass valves open. This allows oil to go around the filter and back to the engine. In this situation, lubrication with unfiltered oil is better than none at all.
JL
#35
#36
You don't know me, nor do you know what I know and have experience with. If the OP pulls the other cam cover and finds that cylinder head in good condition, then I can assure you that the main and rod bearings are still good. He hasn't lost enough material on that cylinder head to completely clog the filter,or in my experience enough to bypass the filter internally.
JL
#37
You're being a bit arrogant and assuming alot aren't you?
You don't know me, nor do you know what I know and have experience with. If the OP pulls the other cam cover and finds that cylinder head in good condition, then I can assure you that the main and rod bearings are still good. He hasn't lost enough material on that cylinder head to completely clog the filter,or in my experience enough to bypass the filter internally.
JL
You don't know me, nor do you know what I know and have experience with. If the OP pulls the other cam cover and finds that cylinder head in good condition, then I can assure you that the main and rod bearings are still good. He hasn't lost enough material on that cylinder head to completely clog the filter,or in my experience enough to bypass the filter internally.
JL
#38
OK guys, heres the scoop. I dont have any experience with internal engines. I have replaced water pumps, alternators, transmission etc but never messed with the internals. Thats why I am asking for experienced help. I know there are shavings in the cam area but I do not see any sludge build up. When I took off the cam caps I could see way down in the oil ports and they looked cleaned. I am not saying they are not clogged at the other end but they do look clean at the upper end.
Now the reason for all the problem is from low oil. I had not checked the oil level in a while and did not know the truck was low or was consuming oil. My wife has a Hummer H3 and I never have to add oil to it. I do check the oil level periodically but never had to add any between oil changes. I had been using the wrong oil in the F150. I have used 10w40, 5w30, 20w50 but never used 5w20.
I was driving and heard the knocking sound and pulled over to check it. It was dark and no flashlight with me but I thought maybe it was a belt tensioner pulley gone bad. I continued to drive about another 10 miles and the truck died. I coasted into a parking lot and checked the oil. It was about 2 1/2 qts low. No need to tell me Im an idiot because I have already kicked my own *** a couple dozen times over this. I bought some 10w30 and filled it back up and it cranked up but was still knocking. Thats when I towed it to a recommened mechanic. Later found out he knew nothing about this engine and was calling his friend at the Ford dealership for advise.
The truck will crank, doesnt run hot or smoke.
I will take the other valve cover off this evening and check to see if it was starved of oil or signs of wear/shavings.
Now the reason for all the problem is from low oil. I had not checked the oil level in a while and did not know the truck was low or was consuming oil. My wife has a Hummer H3 and I never have to add oil to it. I do check the oil level periodically but never had to add any between oil changes. I had been using the wrong oil in the F150. I have used 10w40, 5w30, 20w50 but never used 5w20.
I was driving and heard the knocking sound and pulled over to check it. It was dark and no flashlight with me but I thought maybe it was a belt tensioner pulley gone bad. I continued to drive about another 10 miles and the truck died. I coasted into a parking lot and checked the oil. It was about 2 1/2 qts low. No need to tell me Im an idiot because I have already kicked my own *** a couple dozen times over this. I bought some 10w30 and filled it back up and it cranked up but was still knocking. Thats when I towed it to a recommened mechanic. Later found out he knew nothing about this engine and was calling his friend at the Ford dealership for advise.
The truck will crank, doesnt run hot or smoke.
I will take the other valve cover off this evening and check to see if it was starved of oil or signs of wear/shavings.
#40
I'm with johnny on this one. It's possible for one cylinder head to be oil starved without damage to the other head or the crank. There is an orifice in each head that restricts the oil. They are in the rear cam cap on the pass side and the front cam cap on the driver's side. All the oil the head gets must flow through the orifice first. Ford has a special service message about aftermarket oil filters coming apart and clogging an orifice. I have seen it one time with a Fram. The black glue that holds the media to the cardboard end caps broke loose and clogged the pass orifice on a 2006 E-150. The cam journals got scored and the chain guide wore to the metal on that side. I replaced the guide and cleaned the glue out of the orifice and it ran fine. Point being is the OP needs to check the driver's side before condemning the engine. As a side note, Fram puts the bypass valve at the end of the filter where all the dirt collects so when it does bypass, all the dirt gets flushed back into the engine. Motorcraft filters have the bypass at the threaded end so when it bypasses, the dirt stays in the filter.
#43
I'm with johnny on this one. It's possible for one cylinder head to be oil starved without damage to the other head or the crank. There is an orifice in each head that restricts the oil. They are in the rear cam cap on the pass side and the front cam cap on the driver's side. All the oil the head gets must flow through the orifice first. Ford has a special service message about aftermarket oil filters coming apart and clogging an orifice. I have seen it one time with a Fram. The black glue that holds the media to the cardboard end caps broke loose and clogged the pass orifice on a 2006 E-150. The cam journals got scored and the chain guide wore to the metal on that side. I replaced the guide and cleaned the glue out of the orifice and it ran fine. Point being is the OP needs to check the driver's side before condemning the engine. As a side note, Fram puts the bypass valve at the end of the filter where all the dirt collects so when it does bypass, all the dirt gets flushed back into the engine. Motorcraft filters have the bypass at the threaded end so when it bypasses, the dirt stays in the filter.
#44
Pics of drivers side cam shows more shavings but not as bad as passengers side.
http://s368.photobucket.com/albums/o...%20Side%20Cam/
I found a 4.6 from a wrecked 98 Expedition that I may buy for 750.00.
I think I should just replace the motor and be done with it
http://s368.photobucket.com/albums/o...%20Side%20Cam/
I found a 4.6 from a wrecked 98 Expedition that I may buy for 750.00.
I think I should just replace the motor and be done with it
#45
Pics of drivers side cam shows more shavings but not as bad as passengers side.
Drivers Side Cam pictures by BigWill1767 - Photobucket
I found a 4.6 from a wrecked 98 Expedition that I may buy for 750.00.
I think I should just replace the motor and be done with it
Drivers Side Cam pictures by BigWill1767 - Photobucket
I found a 4.6 from a wrecked 98 Expedition that I may buy for 750.00.
I think I should just replace the motor and be done with it
JL