FLD120 blowing smoke, found oil in odd place

Discussion in 'Freightliner Forum' started by cfannin1, Nov 30, 2015.

  1. cfannin1

    cfannin1 Bobtail Member

    17
    1
    Sep 19, 2013
    0
    99 FLD120 with 60 series detroit. Ran a load early a.m. with no issues. Pulled on the highway with second load and all of a sudden blue smoke rolling out. Pulled off the side of the road to check it. Pulled the top hose off turbo, no oil there,but noticed some oil leaking from the elbow behind the turbo. No loss of power, no miss, no shudder or shake. Pulled back on the road and took to a good location a few miles down the road. Oil was dripping from all around the intake, air compressor area, dipstick, and exhaust. Pulled the tube going from air compressor to intake, no oil there. No oil in the air to air. We are about to pull the exhaust off the turbo now to see what's there. WTH could have caused oil to blow out the intake? I've never seen that happen. TIA
     
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  3. cfannin1

    cfannin1 Bobtail Member

    17
    1
    Sep 19, 2013
    0
    We also pulled the dipstick with the truck running, and when we accelerate, the amount of oil blowing from the dipstick doesn't increase.
     
  4. cfannin1

    cfannin1 Bobtail Member

    17
    1
    Sep 19, 2013
    0
    found blow by tube stopped up. what repurcussions can i watch for?
     
  5. AModelCat

    AModelCat Road Train Member

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    Blowby tube was plugged off? Worst case scenario would likely be blown front or rear main seals. If you don't see any oil leaking into the bellhousing area or from around the front damper after running for a couple hours you're probably ok.
     
    truckon Thanks this.
  6. BoxCarKidd

    BoxCarKidd Road Train Member

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    Saw a cat , 3406B, plug the breather screen shortly after an overhaul. It was assumed to be a preexisting condition. Breather was replaced and it happened again in a week or two. Ended up some excessive valve stem to guide clearance, 1/4" with the spring still on" was putting suit in the crankcase. It had no repurcussions after the head was replaced. It would push up the dipstick to relieve pressure. Hope that"s not your problem.
     
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