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Oil vapour valve - Cars & Trucks

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Please be more specific here this could mean anything on any make of vehicle

Posted on Jul 25, 2013

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Posted on Jan 02, 2017

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Has grey blue smoke at ldle what is thecause.?


blue cloud --blue smoke means your burning oil can be from a number of reasons such as head problems --valve guides cracks in head gasket -scorched cylinder wall -piston rings aslo check oil if murky brown or greyish brown coolant getting in oil indicates more towards upper engine problems

Jul 27, 2015 | Cars & Trucks

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EVAP - Fuel Vapour Evaporative Control System


<p><b><span>1.11)<span> </span><span> </span><u>EVAP - Fuel vapour evaporative control system </u>(actuator)<u></u></span></b><br /> <p><span> </span><br /> <p><b><span>What is it?<span> </span></span></b><span>The EVAP system is a collection of pipes and devices designed to prevent fuel vapour emission to protect the environment.<b></b></span><br /> <p><b><span> </span></b><br /> <p><b><span>Where is it located? </span></b><span>Pipes run from the top of the fuel tank to the carbon (vapour trap) canister which can be located between the inner and outer fenders (wings), on the inner fender or on the firewall (bulkhead).<b> </b><span> </span>A pipe connects the canister to the throttle: the pipe exits just in front of the throttle plate.<b></b></span><br /> <p><b><span> </span></b><br /> <p><b><span>How does it work?<span> </span></span></b><span>The EVAP system passively stores the vapour from the fuel tank in a charcoal filled canister.<span> </span>When the engine is running above idle speed the ECU opens a purge valve to the pipe leading to the throttle body.<span> </span>A vent valve allows the ingress of air into the canister and this encourages fuel vapour to be drawn out through the purge valve to be added to the air intake mixture to be burnt.<span> </span>The opening of the purge valve cycles with engine speed.<span> </span>The purge valve should be closed during idle.<b></b></span><br /> <p><b><span> </span></b><br /> <p><b><u><span><span> </span></span></u></b><br /> <p><b><u><span>Symptoms of faulty EVAP</span></u></b><br /> <p><b><span>Associated OBD2 error codes DTCs: <span> </span>P0440 - P0459; P1441</span></b><br /> <p><b><u><span><span> </span></span></u></b><br /> <ul> <li><b><span>Erratic idling - </span></b><span>If the purge valve fails to close the ingress of unmetered air will compromise the ECU's ability to maintain a suitable air/fuel ratio.<b></b></span></li> </ul> <p><b><span> </span></b><br /> <p><b><span>How to check?<span> </span></span></b><span>Simply clamping off the pipe from the EVAP purge valve should result in an immediate improvement in engine idling performance.<span> </span>Remove the purge valve and try to blow through it.<span> </span>If there is resistance then the valve is mechanically OK.<span> </span>Applying voltage to the electrical connections should open the valve and remove any resistance to blowing. <b></b></span><br /> <p><b><span> </span></b><br /> <p><b><span>How to fix?<span> </span></span></b><span>If the valve is jammed open permanently or fails to open when signaled to do so then replace it<b>.<span> </span></b>It may be possible, taking the greatest of care in the process to open the valve to clean it up in the hopes of affecting a repair.<span> </span>If the solenoid, however, shows open-circuit due to an electrical short it is best to replace it.<b></b></span><br /> <p><span><br /></span><br /> <p><span><b>NEXT 1.12) Oxygen (Lambda) sensor</b></span><br /> <p><span> </span><br />

on Jul 22, 2011 | Mercedes-Benz E-Class Cars & Trucks

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No compression number 1 cylinder did the leak test on valve no leaks piston looks ok please help


There are 4 main possibilities:
- Bad Valve seats
- Bad compression rings
- Bad head gasket
- Bad piston.
If there is no compression as in ZERO on a compression test, I'd look for a stuck open valve or a hole in the piston.
A blown head gasket will give different symptoms depending on where it's gone. Look for water in the oil, low coolant level, pull the oil filler cap and look for water vapour.

Mar 04, 2015 | 2001 Chevrolet Malibu

1 Answer

2003 pontiac grand am ticking no engine light on. what could it be


Camshaft wear/lifter not operating/damaged valve components.
Usually due to engine sludge from lack of servicing/wrong oil grade for conditions/short runs giving internal water vapour in oil.

Nov 07, 2013 | 2003 Pontiac Grand Am

1 Answer

Smell of brunt oil oil level is good but smoke of oil coming from engine


A very small amount of oil weeping onto something hot, manifold, turbo etc can give off considerable smell with little smoke. What's the miles?
When was the last service?
What condition is the engine?
Worn engine can give pressure in engine forcing oil fumes/vapour out of breathers onto hot surfaces which then enter car ventilation system.

Nov 07, 2013 | 2004 Pontiac Grand Am

1 Answer

WHY IS OIL GETTING IN THE AIR INTAKE IN MY 95 TOYOTA CAMRY


See here p147 for a diagram
http://www.turboninjas.com/camry/eg1.pdf

The PCV valve and hose are on the suction (vacuum) side of the throttle, and this is meant to **** oily crankcase vapours into the inlet manifold for burning.
This should be replaced by fresh air from the upstream or atmosphere side of the throttle, the top hose in the diagram.
When the PCV valve and its hose gets blocked, and the engine is a bit worn, Combustion blow by pressure and oil vapour in the crankcase builds up and is not sucked through the PCV valve. Instead it is forced into the intake tract.
So check the PCV valve, hose, and bleed return hose to make sure they are clear OK. If the problem persists, your engine has probably developed worn piston rings, and blow by is now too high to control properly.

Mar 27, 2012 | 1995 Toyota Camry

1 Answer

Should their be oil coming into the turbo?


Simple answer NO,, the valve stem oil seals are your only safe guard to leakage from the valves. Any excessive oil will be taken into turbo and pressurised and you may see signs of leakage at pipework ducting in the form of a vapour or oil stains. Good luck

Apr 09, 2010 | 2000 Volkswagen Beetle

1 Answer

99 A6 - 2.8 - engine vapour


ck to see if valve cover gasket is seeping oil onto hot exhaust manifold, making smoke and a pretty good odor

Nov 09, 2008 | 2006 Audi A4

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