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Oil blowback out of vacuum hose to rocket cover

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  • Cars & Trucks Master
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Check the pvc valve.

Posted on Nov 03, 2012

Testimonial: "awesome will let my husband know cause i told him it was probably that thanks mate"

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SOURCE: dont know how to hook up vacuum hoses for 1978

u will need a book or that that will make it lots easyer

Posted on Dec 08, 2009

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1 Answer

What causes an oil blowback from oil cap in my 95,850 volvo


Clogged oil trap (PCV system, positive crank case ventilation). The hoses and oil trap need to be replaced (due to become brittle, dry rotted, and clogged) as well as cleaning out the sludge in the bottom of the engine block. The parts cost about $150 last I checked, and you will need to remove the intake manifold and spark plug wire cover to access the hoses and oil trap. On the bottom of the trap it connects to the engine block where you have to clean out the oil sludge. If you do not clean out the oil sludge it will still create back pressure through the oil cap and dip stick. I actually did an oil change at the same time, and drained the oil first and left the drain plug out while. I sprayed Sea Foam and compressed air down there to get the sludge out. I also used a coat hanger and brush to scrape/scrub it out. Worked good.

Oct 29, 2012 | 1995 Volvo 850

1 Answer

Oil leaking from top of engine


The oil could be leaking from the rocket cover. The rocker cover bolts may need tightening or the rocket cover gasket needs replacing.

Jul 23, 2012 | 1995 Volvo 850

1 Answer

Seems like air is seeping in but also leaking oil on the headers could this be cause of the gasket on the valve covers


Yes, a bad gasket would be the cause of the oil leaking out, but has nothing to do with any air getting in. There is no vacuum under the valve cover. Change the valve cover gasket and check the intake manifold and the vacuum hoses coming from it for vacuum leaks (air getting sucked in).

Jun 21, 2012 | Cars & Trucks

1 Answer

Oil shoot out through air filter


Hi,
That means your engine already have big blowback, air from engine crankshaft goes out into the engine oil cover and into the pcv valve to the air cleaner.
It is cause by the compression leakage from piston rings.
Better check and clean the PCV first or buy a new one if it is fully blocked. Located from the engine oil cover, follow the hose on top, hose goes into PCV and into air cleaner.

Hope that helps you out!

Sep 13, 2011 | 1998 Mazda Protege

1 Answer

I have a 2003 cts with a oil leak on the right upper back part of the engine against the fire wall. Both valve covers gaskets have been changed two months ago. the engine was steam cleaned to see where the...


Hi,
That's a blowback/EGR hose. Excess gas from the compression in the piston goes back in the crankcase and passes into the valve train/cover and the gas by means of EGR valve was sucked again by the intake manifold.

That is why there is oil in the hose, excessive oil means a blocked EGR valve. Either clean the or replace it with new one.

Hope that explains everything.
Thanks for asking FixYa!

Aug 07, 2011 | Cadillac CTS Cars & Trucks

1 Answer

Where is the pcv valve located ?


Hi,
It is a hose with a metal/plastic made one way valve. Locate on top of your engine oil cover ( you could see it by the side of the cover ), the air which came from the over excess compress gas from piston, its called blowback.
The blow back gas goes through that PVC valve and goes back to the intake manifold.
Just look for the hose from the cover of the engine and connected to the airfilter intake hose! Look at the hose closely between end you will see the valve.
Hope that helps you out!

Jun 22, 2011 | 2004 Mitsubishi Galant

2 Answers

When you drive it you can smell oil when it gets hot


Either oil is dripping on ur exhaust pipe and u smell it burning! Or Ur blowback oil/gas is the one ur smelling at, usually on top of ur engine valve cover there is a breather outlet connected with hose and goes thru the air claner housing! The hose might have cracks or been disconnected, check on that! Hope that might help you!

Nov 10, 2010 | 1998 Ford Escort

2 Answers

Cylinderhead torque stc.


Cylinder Head Removal & Installation SOHC To Remove:
  1. Relieve fuel system pressure.
  2. Remove timing belt cover. Camshaft timing marks kia-03-20-7032.gif

  3. Turn crankshaft until timing mark on front housing and the arrow "2" on the camshaft pulley align.
  4. Loosen lock bolt on tensioner.
  5. Pry tensioner away from timing belt and tighten lock bolt to relieve tension on the timing belt.
  6. Remove timing belt from camshaft pulley.
  7. Disconnect battery negative cable.
  8. Remove 3 bolts that secure accelerator cable and air intake hose to cylinder head cover.
  9. Detach accelerator cable and place off to side.
  10. Remove the following;
    • Air hose
    • Air ISC air hose
    • Breather hose
    • Vacuum hose from air intake hose
  11. Disconnect mass air flow sensor electrical connector.
  12. Remove air intake hose.
  13. Remove PCV valve from cylinder head cover.
  14. Remove ISC air hose from idle speed actuator.
  15. Remove air hose from behind intake manifold.
  16. Remove 2 screws from high tension wire protectors.
  17. Detach wire loom from holder at rear of cylinder head cover.
  18. Detach vacuum tube at rear of cylinder head cover.
  19. Remove vacuum pipe. Cylinder Head Cover kia-03-20-7042.gif

  20. Remove 7 cylinder head cover bolts.
  21. Remove cylinder head cover and gasket.
  22. Disconnect 2 ignition coil electrical connectors.
  23. Disconnect 2 fuel injection electrical connectors at rear of cylinder head.
  24. Disconnect the following electrical connectors;
    • Oxygen sensor
    • Throttle position sensor
    • Idle speed actuator
    • Oil pressure switch
    • EGR vacuum solenoid valve at intake manifold
  25. Disconnect heater hose from elbow.
  26. Disconnect brake booster vacuum hose and cruise control vacuum hose from surge tank.
  27. Detach wire harness from rear of cylinder head.
  28. Disconnect purge control solenoid vacuum hose from intake manifold.
  29. Disconnect fuel hose from fuel connector assembly.
  30. Remove grounding bracket.
  31. Remove 4 bolts and intake manifold bracket.
  32. Remove starter.
  33. Detach water bypass hose from bypass pipe.
  34. Disconnect water hoses from oil cooler.
  35. Disconnect fuel hose from fuel pipe.
  36. Remove exhaust manifold heat shield.
  37. Remove exhaust flange nuts and front exhaust bracket bolt.
  38. Lower exhaust system. Cylinder head bolt loosening sequence kia-03-20-7050.gif

  39. Loosen cylinder head bolts in 3 steps in proper sequence.
  40. Remove cylinder head bolts and washers.
  41. Remove cylinder head, intake manifold and exhaust manifold as an assembly.
To Install:
  1. Install NEW cylinder head gasket.
  2. Install cylinder head, intake manifold and exhaust manifold as an assembly.
  3. Tighten cylinder head bolts in 3 steps in reverse sequence that was used during removal. Tighten bolts to 62 ft lb (84 Nm).
  4. Install front exhaust bracket bolt. Tighten bolt to 20 ft lb (27 Nm).
  5. Install NEW lower exhaust flange gasket and 3 nuts. Tighten nuts to 24 ft lb (31 Nm).
  6. Install exhaust manifold heat shield. Tighten nuts to 35 in lb (4 Nm).
  7. Connect fuel hose to pipe.
  8. Connect 2 hoses to oil cooler.
  9. Attach water bypass hose to bypass pipe.
  10. Install starter and bolts. Tighten bolts to 34 ft lb (46 Nm).
  11. Install intake manifolds bracket and 4 bolts. Tighten bolts to 32 ft lb (45 Nm).
  12. Install grounding bracket.
  13. Connect fuel hose to fuel connector assembly.
  14. Connect the following electrical connectors;
    • Oxygen sensor
    • Throttle position sensor
    • Idle speed actuator
    • Oil pressure switch
    • EGR vacuum solenoid valve at intake manifold
  15. Connect purge control solenoid vacuum hose to intake manifold.
  16. Attach wire harness from rear of cylinder head.
  17. Connect brake booster vacuum hose and cruise control vacuum hose to surge tank.
  18. Connect heater hose to elbow.
  19. Connect 2 fuel injection electrical connectors at rear of cylinder head.
  20. Connect 2 ignition coil electrical connectors.
  21. Install cylinder head cover.
  22. Install 7 cylinder head cover bolts. Tighten bolts to 60 in lb (7 Nm).
  23. Install vacuum pipe and 2 bolts at rear of cylinder head cover. Tighten bolts to 60 in lb (7 Nm).
  24. Connect vacuum tube to pipe.
  25. Connect loom holder to rear of cylinder head cover.
  26. Install 2 screws to high tension wire protectors.
  27. Install air hose to behind intake manifold.
  28. Install ISC air hose to idle speed actuator.
  29. Install PCV valve to cylinder head cover.
  30. Install air intake hose.
  31. Connect mass air flow sensor electrical connector.
  32. Install the following;
    • Air hose
    • Air ISC air hose
    • Breather hose
    • Vacuum hose from air intake hose
  33. Attach accelerator cable.
  34. Install 3 bolts that secure accelerator cable and air intake hose to cylinder head cover. Timing belt pulley timing marks kia-03-20-7035.gif

    NOTE: Timing belt pulley timing mark and timing mark must be aligned.
    Camshaft timing marks kia-03-20-7032.gif

    NOTE: The arrow at "2" on camshaft pulley must be aligned with timing mark on front housing.
  35. Install timing belt.
  36. Install timing belt cover.
  37. Pressurize fuel system.
  38. Start engine and check ignition timing.

Jul 11, 2010 | 1999 Kia Sportage

1 Answer

Oil in the intake manifold air hose...


This is usually an indication of "blowback" caused by worn piston rings. How many miles on the engine? There is not a cheap solution if it is blowback.

Apr 28, 2009 | 2003 Volkswagen Passat

1 Answer

Serious oil blowback through air filter jaguar 3.2v8 1998 model


Replace the pcv valve. It will be on a vacuum hose the size of your finger. It's usually in the valve cover, just pushes in.

Apr 18, 2009 | 1998 Jaguar XJ8L

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