FJ40 Oil Woes

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Living in the Past said:
:hhmm:I'm glad SOR was able to help you out with how where the PCV is on a 68. I guess you didn't read my first post.:meh: I agree it's a good idea to replace the hoses with ones that wouldn't collapse under vacuum :cheers:
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Oops! I did read it but just didn't understand what I was reading. If it is any concillation, I went back and re-read it and now know exactly what you were saying.

I'm learning. I appreciate everyone's patience and great advice.

The torrential downpours are back so I haven't gotten to check to see if the pcv valve is plugged. I really wish I had a garage to do these things......

I assume I can pickup proper oil resistant hose at NAPA? (my only automotive option on my island, otherwise it is mail order.)

Chris
 
If they don't have it in stock, they should be able to order it for you. UUUUUUUps, I see now Grant already hit on this issue. ;p
Here is another one, honest not picking on you, but a prior owner (as far as I know) must have moved your fuel filter to above your intake, or maybe added another. Usually, they are down on the frame, before the fuel pump. I don't like the idea of having any rubber fuel hoses right there above your exhaust. Too much heat breaks them down and increases the risk of engine fire. Mine is metal line from the pump to the carb.
 
rsbcruiser said:
If they don't have it in stock, they should be able to order it for you. UUUUUUUps, I see now Grant already hit on this issue. ;p
Here is another one, honest not picking on you, but a prior owner (as far as I know) must have moved your fuel filter to above your intake, or maybe added another. Usually, they are down on the frame, before the fuel pump. I don't like the idea of having any rubber fuel hoses right there above your exhaust. Too much heat breaks them down and increases the risk of engine fire. Mine is metal line from the pump to the carb.
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Stop picking on me!! Waaaaa....Just kidding. I need all the help I can get. I really appreciate everyone's input.

Good to know. I wondered about. Another thing to add to my thing to do list.
 
I pulled the pcv valve out today and it isn't plugged. Erggh....so apparently that isn't the problem.
I guess next I'll take it to the garage and have them run a compression and a leakdown test.

As to the fuel line, for some reason a PO installed a second gas filter on the other side of the fuel pump too. I'm not sure why but I'll have to fab a new one and pick up some oil hose at NAPA.

I was really hoping a plugged pcv valve was the problem.....
 
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Old post hijack.....muahaha

AK Chris I have a 1969 FJ40 with not quite the same issue you have but it does push oil out of the dipstick. (mainly where the tube meets the block) So after looking at your pics I will go home and check to see if that little tube from my oil filler is plugged. I dont have the PCV? Mine is a 1969 and you guys stated that 1969 models have it? Oh well

Robert
 
My 69 has the PCV on the oil fill
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The term "chrome-moly" rings refers to the composition/construction of the top two rings. Typically the top ring has a skive turned lathe groove in the middle of the ring. Into this groove is sprayed hot molybdenum which is then shaved off in a lapping die because it is very tough and that is why the ring lasts so long. The second ring is, as you stated, chrome faced, which is an electroplating process. The oil ring, since the late sixties, has usually been comprised of two flat rings with a spirolox oil separator ring behind/between them. The legs in the spirolox are "captured" by the rings above and below. As always it is very important to stagger the gaps of all rings so there is no direct path from combustion chamber to crankcase. Such a condition will most certainly pull oil up into the chamber as well as push spent gases back down into the crankcase. Oh, there was also a plasma coated ring. These are usually used in heavy diesel engines whether over the road tractors or generators. Those ring faces are so hard they will literally wear out the block. I remember the dyno room running a big Ford diesel and one set of rings wiped out four blocks in their trial test runs. Pretty cool.
 
I had a Model "A" ford for years--back then a PCV valve was unheard of--wonder how this thing ran for 60+ years without one??
 
Jim it was like a flame spraying process. The plasma coating, whatever the chemical make up was, was sprayed/imbedded into the groove cut into the face of the ring. It is harder than the molybdenum that was used in the "regular" rings. Also the cast iron of the general rings was called M1 and would easily break when expanded or twisted. However, the material used for the heavy diesel rings was called M9 and you could twist it into a pretzel and it wouldn't break. Had to be careful so as not to slice your hands as the sharp edges would cut a man easily. These were the rings that the plasma coating was sprayed onto. Of course this was all a very long time ago in the early seventies when I apprenticed in tool and die at Ramco piston rings in St. Louis (the "R" in TRW and now Sealed Power). I suspect that over the years different equipment has been developed for the production of piston rings as the cam turn lathes dated to the fifties.
 
Coming back to a really old thread. My 1968 with f145 engine does not have the crank case ventilations with PCV valve, only the downdraft tube from oil filler neck. Its pushing oil through dipstick. Have not measured leakdown... Anybody solved these similar challenges?
 
Not sure how blow by pressure can build up with a draft tube 1/2" + in diameter to make the oil push out a 1/4" plugged hole ie the dipstick. Perhaps a gasket/o-ring be installed/replaced on the dip stick. Maybe a mouse or something built a home in the bottom end of the draft tube - One of those cheap inspection camera's off Amoron <$30 that plugs into your phone is very handy for such tasks
 
The draft tube is not filled by a mouse nest- checked that :). While revving the car stationary, no oil is puking out. After a drive a small amount had come out. I tried to make the fitment of the dipstick tigher... lets see how it affects the case.
 
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