eho35 oil problem

Discussion in '4-Stroke Engines' started by astring, Jul 16, 2008.

  1. astring

    astring Member

    This has been a problem since I got my motor (on a GEBE system). I had leaks on my first 5 -10 miles Dennis from GEBE said it was due to too much oil so I drained some out. It ran pretty good for the next 80 or so miles but tonight after a short (2 mile) trip it was leaking again and smelled like burnt oil. Also there was oil coming out of the top spark plug cover. Any thoughts to help me out on this? I am thinking of draining a bit more oil but I do not want to go to low. I am using 10W40 grade oil, should I try SAE 30? any thoughts would help. Oh and I am driving it in Arizona which is 103 to 112 degrees lately.
     

  2. stude13

    stude13 Active Member

    first, get a turkey baster and remove all of the oil and refill with the exact amount recommended. take the cover off engine and check head bolts and spark plug. clean all oil off, run it without cover a couple of miles. when you get back you will find the leak.
     
  3. darwin

    darwin Well-Known Member

    10/40 OIL in those temps is a good idea. You want a lighter oil only at startup and in very cold temps.
     
  4. Egor

    Egor Guest

    This is a Echo 4 stroke? I don't think I would run the engine with the cover removed, It will fling oil everywhere. The oil level is important. The 10-40 should be good, those numbers just mean that the oil is 10 weight when it is cold and 40 as it gets hot, its how thick the oil is. If the engine is installed laid over you will have to remove all the oil and measure out the correct amount. if it is in the correct position then you just fill till the oil is at the filler hole, there should be a stick on the plug, if it touches the stick then it is OK. It will pump oil out if it is to high, that is a rocker cover not a spark plug cover. Have fun Dave
     
  5. astring

    astring Member

    that is the robin Subaru 33cc engine.
     
  6. Egor

    Egor Guest

    OK I checked it out, at Stantons site. But yes everything I said, I am used to the Honda. Have fun, Dave

    PS: I do like the OHC in the Honda, but the Iron liner in the Subaru makes it far better than the Honda.
     
  7. Nuttsy

    Nuttsy Member

    Astring,
    Going over my engine and parts manuals for the Subaru there do not seem to be any valve seals on this engine. Most likely, the guides ARE the seals. IF you had too much oil in the engine to begin with, what happens is 2-fold. One, the oil will start to foam. Not a good thing as the foam, instead of the FLUID oil is NOT lubricating the system properly. The second problem is that too much oil will cause a high pressure which can blow out seals/gaskets. I suspect that is what you are experiencing in that high head pressure blew out the valve cover gasket and/or the cam cover gasket. The smell is just the oil burning on the outside of the engine. The way this engine is designed, there is no way (barring an internal check ball failure) that the engine is getting any oil in the cylinder as it is made to run in ANY position. Hopefully it didn't blow the crank seals. Check the valve cover screws and make sure they are tight. Then try as, mentioned above, to remove and then refill the crankcase with slightly over 3oz.US of oil. MAKE SURE the engine is level; front to back and right to left.
    Good luck. You may just need to replace the valve cover and/or cam cover gaskets if any at all.
    Cheers, WC
     
  8. astring

    astring Member

    I have less than 100 miles. I can't imagine that i would have to replace a gasket.
     
  9. Torques

    Torques Guest

    If the engine is sitting level, the oil should just reach the bottom of the hole. It is clearly stated in the owner's manual. I'm not sure how it could be overfilled after reading the instructions but if if somehow was overfilled, I believe engine damage could occur, no fault of the new motor itself.
     
  10. astring

    astring Member

    not quite level but close. Have you ever had an oil leak problem?
     
  11. Nuttsy

    Nuttsy Member

    Well, I guess it's possible that you got a bad build. Someone else on here just got one that had a broken intake and is now awaiting a replacement.
     
  12. Torques

    Torques Guest

  13. Torques

    Torques Guest

    If it was overfilled it could seep out but I don't know what the ramifications are after that. I would talk to GEBE about it. If you spilled oil outside of the filler hole, it can seep down onto the top of the fuel tank, then slowing drip out the sides the next few days/weeks. It is possible that's where the oil is coming from? I would be happy to look at it if you bring it over to see if there is something that was overlooked but I don't do engine repair if there is physical damage.
     
    Last edited by a moderator: Jul 17, 2008
  14. astring

    astring Member

    It may be that spilled out side of the filler hole thing because it is draining down over the top of the tank. thanks for the offer, for now I will see if it clears up, if so, it was just some spill over. The thing runs just great, I cruise at 20 mph no problem (I did 30 miles the other day with no problem at all). the fact that it is running like a champ makes me think that it is not a gasket or foamy oil or any weird stuff like that.
     
  15. Egor

    Egor Guest

    It should have a breather hose going to the air intake. The crankcase on a 4 stroke has to be vented. If the oil is allowed to get up there it will push it into the air filter and into the engine. Some of the ways it can get there is, Blow By, the rings are not seated. A bad check valve on the breather. Too much oil in the crank case. Have fun, Dave
     
  16. beachcruiser

    beachcruiser Member

    Oil Leak

    Egor is right on. I overfilled my oil on my motor. It leaked oil out of air cleaner . If the rings are seated properly ,the oil in the combustion chamber will cause your motor to seem like it lock up.
     
  17. I found with my 2 Subaru Robin engines that 100ccs of oil, as called for in the owner's manual, is too much oil and will blow out into the air cleaner. Use no more than 1/3 cup of oil, or fill the oil to 1/2 way up on the dip stick with the engine level. I have over 3,000 miles on one engine and over 2,000 miles on the other engine with not one single engine problem at all using 1/2 full of oil. The oil blowing out into the air cleaner causes sooty black deposits on the back of the bike and a fouled, blackened plug.
     
  18. Old Bob

    Old Bob Member

    Also there was oil coming out of the top spark plug cover.

    Tighten everything on the motor, I've seen more than one of those EHO engines come through with loose screws.


    I've never seen such a collection of miss information or bad information as this thread.

    PS: I do like the OHC in the Honda, but the Iron liner in the Subaru makes it far better than the Honda.

    Wrong no iron liner in the EHO

    IF you had too much oil in the engine to begin with, what happens is 2-fold. One, the oil will start to foam. Not a good thing as the foam, instead of the FLUID oil is NOT lubricating the system properly. The second problem is that too much oil will cause a high pressure which can blow out seals/gaskets.

    can't happen on the EHO as the oil reservior is seperate from the crankcase

    A bad check valve on the breather.


    no check valve on the EHO


    100ccs of oil, as called for in the owner's manual, is too much


    Run what Robin says to run, the oil is part of the cooling system, do not run it low.
     
  19. 1/2 full on the dipstick is not really low, just not chock-a-block full. I've been filling with about 1/3 cup of oil instead of 100cc and have had no problems with over heating, no excessive wear, no oil dripping from the air cleaner cover, and a plug that stays cleaner much longer.
     
  20. give me vtec

    give me vtec Active Member

    I always use 100ml of oil as recommended... not 100cc, I use 30w in mine and 10w-30 mobil1 in my dads. Never had a problem w/oil in air filter or soot on back. We ride almost everyday in 100+ degree weather. No engine problems yet and we have both ridden about 10 gallons worth so far. Use the funnel with a on off twist valve and measurements on the side ... it makes it easy.
     
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