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  1. #1
    Member
    Join Date
    Aug 2012
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    38
    Location
    PHELAN ,CALIFORNIA
    Tractor
    NORTRAC NT-20C /Jinma Y380 engine

    Default NOISE FROM INTAKE

    HEY GUYS, I JUST STARTED HEARING WHAT SOUNDS LIKE EXHAUST THRU MY BREATHER????????/
    I'M TOLD IT'S A JINMA 20HP 3 CYLINDER DIESEL(NOR TRAC NT204-C) 293HRS. ON IT, HAS HAD REG. SCHEDULED MAINT.

    ANY IDEAS?

  2. #2
    R.I.P.
    Join Date
    Dec 2008
    Posts
    5,883
    Location
    North Carolina
    Tractor
    Kubota BX2200

    Default Re: NOISE FROM INTAKE

    An other symptoms...is the power down?
    Which is bigger?: a) $100 per month since the Big Bang or b) the US National Debt.

  3. #3
    Super Star Member LD1's Avatar
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    Apr 2008
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    12,034
    Location
    Central Ohio
    Tractor
    Kubota l3400

    Default Re: NOISE FROM INTAKE

    Hopefully you shut the tractor off. Sounds as if it is running backwards. (yes diesels can do that), in which the exhaust becomes the intake and the intake becomes the exhaust.

    It is usually caused by doing hard work, and pretty much stalling the engine, and then whatever you are working releases pressure and caused the engine to "start" backwards.

    An example would be be like pulling something heavy, and you pop a wheelie, and stall. If you dont press the clutch, when the tractor sets back down, it spins the motor in reverse.
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
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    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
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    (4) Sachs-Dolmar 116SI Ported
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  4. #4
    Veteran Member Bob Rooks's Avatar
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    Feb 2007
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    2,405
    Location
    Bothell & Silverdale, WA
    Tractor
    Yuchai Bulldozer

    Default Re: NOISE FROM INTAKE

    Adjust the valves and it will go away.
    Four stroke engines won't run backwards without the proper camshaft. Two strokes will.
    Yuchai 306R dozer, Mustang 2040 skid steer, Mitsubishi MS035 Mini-Ex with four buckets and a rake, 7' Dual Dozer with dual Trimble GCR-2 laser receivers.

  5. #5
    Member
    Join Date
    Aug 2012
    Posts
    38
    Location
    PHELAN ,CALIFORNIA
    Tractor
    NORTRAC NT-20C /Jinma Y380 engine

    Default Re: NOISE FROM INTAKE

    NO POWER'S NOT DOWN

  6. #6
    Member
    Join Date
    Aug 2012
    Posts
    38
    Location
    PHELAN ,CALIFORNIA
    Tractor
    NORTRAC NT-20C /Jinma Y380 engine

    Default Re: NOISE FROM INTAKE

    THANKS WILL ADJUST VALVES...IS THIS COMMON ? SHOULD I RETORQUE HEAD BOLTS TOO?

  7. #7
    Veteran Member Bob Rooks's Avatar
    Join Date
    Feb 2007
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    2,405
    Location
    Bothell & Silverdale, WA
    Tractor
    Yuchai Bulldozer

    Default Re: NOISE FROM INTAKE

    Quote Originally Posted by DUMMASS View Post
    THANKS WILL ADJUST VALVES...IS THIS COMMON ? SHOULD I RETORQUE HEAD BOLTS TOO?
    Re-torque all head bolts first, in sequence, then adjust valves.
    Those symptoms are usually avoided by performing this maintenance within the first 50 hours of operation.
    Yuchai 306R dozer, Mustang 2040 skid steer, Mitsubishi MS035 Mini-Ex with four buckets and a rake, 7' Dual Dozer with dual Trimble GCR-2 laser receivers.

  8. #8
    Super Star Member LD1's Avatar
    Join Date
    Apr 2008
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    12,034
    Location
    Central Ohio
    Tractor
    Kubota l3400

    Default Re: NOISE FROM INTAKE

    Quote Originally Posted by Bob Rooks View Post
    Adjust the valves and it will go away.
    Four stroke engines won't run backwards without the proper camshaft. Two strokes will.
    Really?

    http://www.tractorbynet.com/forums/h...-reversed.html
    http://www.tractorbynet.com/forums/k...backwards.html
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
    Kubota L3400GST W/LA463 FEL
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  9. #9
    Veteran Member Bob Rooks's Avatar
    Join Date
    Feb 2007
    Posts
    2,405
    Location
    Bothell & Silverdale, WA
    Tractor
    Yuchai Bulldozer

    Default Re: NOISE FROM INTAKE

    Quote Originally Posted by LD1 View Post
    Really?
    Ya, REALLY! Sorry 'bout that. I was thinking direct reversible engines, and right-hand rotation engines. Only an inexperienced operator would allow an engine to stall anyway.

    But I'm sticking by the valve adjustment.
    Yuchai 306R dozer, Mustang 2040 skid steer, Mitsubishi MS035 Mini-Ex with four buckets and a rake, 7' Dual Dozer with dual Trimble GCR-2 laser receivers.

  10. #10
    Super Member greg_g's Avatar
    Join Date
    Dec 2003
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    6,086
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: NOISE FROM INTAKE

    If this is your first diesel, intake is voracious (compared to petrol engines). I assume you're describing "sounds like exhaust" when the air filter is removed. In that respect, a good air filter might be considered to act as a muffler. If you're hearing excessive intake noises with the filter installed - check for damage to the filter itself. If it's ok, look for a hole in the airflow path between the filter and the intake manifold. Finally, make sure the intake manifold hasn't started to come loose and/or that the manifold gasket is intact.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

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