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Why would oil come from exhaust of b&s 5hpmower engine

Why would oil come from exhaust ?

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Most likely the rings are stuck in the piston, letting oil into the combustion chamber, it could also be the valves are not seating right or the mower was over-filled with oil.

Posted on Sep 11, 2009

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Posted on Jan 02, 2017

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2 Answers

Oil coming out exhaust pipe, wont idle on 1968 VW motor


You need to remove the motor & dismantle it, then check the cylinder sleeves & pistons for wear, the rings will definately be worn. Best is to have the motor reconditioned if you are unable to do it yourself. There are no short cuts if oil is emitting from the exhaust.

Sep 21, 2015 | 1968 Volkswagen Karmann-Ghia Cabriolet

1 Answer

21 HP briggs & stratton engine burns 6oz of oil & the spark plug is black with oil & carbon there is no smoke from the exhaust


Check in your user manual and see what weight of oil you should use in your engine. If the weight of oil is too low it will let it burn pass the rings and the valves. I use Briggs & Stratton 30 SAE oil in all my engines. If the engine is old you may have to do a valve job or clean the valves and head which do carbon up and need to be cleaned from time to time.

Aug 22, 2011 | Garden

1 Answer

Hi , i have a porsche 928 s2 . when the engine has been running for a couple of mins it starts to smoke from the engine bay , it looks like oil is coming out of one of the gaskets at the top ? help jim


if the oil is leaking onto the exhaust pipe this will cause smoke as the exhaust pipe gets very hot & burns the oil, you will need to find out just where the oil is leaking from & repair the leak by replacing the gasket or whatever is causing the leak.....hope this helps......cheers.

Jul 08, 2011 | 1983 Porsche 928

2 Answers

I have an oil problem I am losing oil and do not know where it is going There is no oil the cement or on the side of the motor


see how dark and oily it is around your exhaust pipe tip. at 11 years old your valve guides and piston rings are beyond their normal service life and oil may getting past them and out the tail pipe.

look inside your air cleaner. old motors often pump oil through the PCV valve into the air cleaner box.

look at the back of the car itself. a bad seal can dump oil which turns into a fine mist which then collects as a layer of slime on the back of the car, like road dust.

Jan 07, 2011 | 1999 Saturn SL

1 Answer

Where are the four O2 sensors on a 2003 Montero Sport? Is $300 reasonable to replace the two upstream sensors?


According to the service literature I read, the 2003 Montero Sport with the 3.0 or 3.5 L engine does not have O2 sensors listed even in the maintenance schedule. The 2.4 L engine has it on the exhaust manifold though.
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However, the following lists the par, though for before or after the catalytic converter:

http://www.partstrain.com/store/index.php?VN=4294967180+4294966587+4294964143+&Nr=AND(universal:0)&N=0&Ntt=Oxygen%20Sensor

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I think that $250 to $300 is reasonable if the Oxygen sensors are stuck in there with rust and the threads are preserved by the technician. Oxygen Sensor replacement can be tricky.
---
Good luck on this repair.

Exhaust Manifold

REMOVAL & INSTALLATION

2.4L Engine


  1. Remove or disconnect the following:

    • Negative battery cable

    CAUTION
    Wait at least 90 seconds after the negative
    battery cable is disconnected to prevent possible deployment of the air bag.


  2. Heat cowl from the exhaust manifold
  3. Aspirator valve assembly, if equipped
  4. Oil dipstick and guide
  5. Oxygen (O2S) sensor connector and ground cable, if equipped
  6. Exhaust pipe from the manifold
  7. Exhaust manifold and gasket from the engine
    To install:

  8. Install or connect the following:

    • Exhaust manifold. Torque the M8 mounting nuts to 22 ft. lbs. (29 Nm) and the
      M10 mounting bolts 36 ft. lbs. (49 Nm). starting from the middle and working
      outward.
    • O2S sensor connector and ground cable, if equipped
    • Exhaust pipe to the manifold. Torque the nuts to 35ft. (49 Nm).
    • Aspirator valve assembly, if removed
    • Heat cowl to the exhaust manifold. Torque the bolts to 117 inch lbs. (13
      Nm).
    • Negative battery cable

  9. Start the engine and check for exhaust leaks.


3.0L and 3.5L Engines


  1. Remove or disconnect the following:

    • Negative battery cable
    • Exhaust pipe from the exhaust manifolds
    • Oil dipstick, guide and O-ring
    • Heat shields
    • Exhaust manifolds

  2. Clean the gasket mounting surfaces. Inspect the manifolds for cracks,
    flatness and/or damage.
    To install:

  3. Install or connect the following:

    • New gasket and exhaust manifold. Torque the nuts to 33 ft. lbs. (44 Nm) on
      3.0L engines and 22 ft. lbs. (29 Nm) on 3.5L engines.
    • Heat shield, Torque the bolts to 10 ft. lbs. (14 Nm).
    • Exhaust pipe to the exhaust manifolds. Torque the nuts to 35ft. (49 Nm).
    • Oil dipstick, guide and new O-ring
    • Negative battery cable

  4. Start the engine and check for exhaust leaks.


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Oct 07, 2010 | 2003 Mitsubishi Montero Sport

1 Answer

Oil pan leak


buy a tube of sealer called Right Stuff
1. Remove the flexible exhaust pipe
2. Disconnect the downstream catalyst monitor sendor (OXYGEN SENSOR)
3. Drain engine oil
4. Remove the 15 bolts and the oil pan
5. Clean pan & surface area.
6. Apply sealer 10mm (0.40 inch) diameter of sealer
7. Position oil pan and hand-tighten the oil pan bolts
8. Start with front of oil pan tighten each bolts going around oil pan till all are tighten up.
9. Install exhaust flexible exhaust pipe
10. Connect OXYGEN SENSOR connector
11. Lower the vehicle.
12. Fill oil 5w20 (Spec)

Feb 10, 2010 | 2001 Ford Escape

1 Answer

2004 huyndai elentra code po 010


The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the exhaust camshaft. There is no variation in valve timing of the exhaust cam because the exhaust camshaft is driven by the timing belt. The timing of the intake cam is varied by the relative operation the CVVT vane to the housing. This system helps the engine decrease exhaust gases and increase engine power and fuel economy by changing the valve open/close timing of the intake camshaft. The deviation of the camshaft position from the target point is evaluated during stable driving condition. The PCM accumulates this deviation for a certain period and sets DTC P0010 when the accumulated deviation is too high. The target camshaft position is a predetermineded value depending on engine speed and throttle angle communicated to the PCM. The MOST FREQUENT CAUSE is DIRTY OIL. The NEXT most frequent cause is restriction/obstruction of OIL FLOW to the CVVT unit (oil control valve supplies this). Remove this valve & inspect it for aluminium flashing (bits of metal which might be interferring with the valve's operation). We use Z-MAX treatment to solve this problem at our service center (after changing oil & filter (genuine Hyundai Oil Filter).b0f9f5a.jpg

Jun 15, 2009 | 2004 Hyundai Elantra

2 Answers

Oil pressure sending unit


On all 2.0L and 2.4L engines, the oil pressure sending unit switch is located on the engine block, below the exhaust manifold, on the firewall side. On all 2.5L engines, the oil pressure sending unit switch is located on the engine block, below the front exhaust manifold on the radiator side.

May 24, 2009 | 1996 Plymouth Breeze

3 Answers

Smoke comes from around engine


Probably a vavle cover gasket leak, small but enought to produce oil, in or on the surface of the motor doesnt take much to a lil smoke from aa hot engine...it could be collectiing in the canals ontop of the motor where the vlave covers sit on the head? or a head gasket problem....inspect it well after you run the car for a lil while, b4 it starts to smoke

May 18, 2009 | 1986 Oldsmobile Cutlass Supreme

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