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Why does your intake valve push rod keep coming unseated?


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2009-05-01 21:15:33
2009-05-01 21:15:33

I would suspect a bent pushrod but check the rocker for wear also. Good luck.


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PCV valve may need replaced or the air intake may be leaking. Check for holes in the intake system or vacuum leaks.

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Did you mean PCV [positive crankcase ventilation]....that valve helps keep engine gasses from going to the atmosphere but wont allow intake pressure back to the crankcase.

A non-positive shut off valve is one that is controlled by the user. You hold down the valve to keep the water or whatever coming out, and when you want it to stop, you release the valve.

There is a butterfly valve for the idle air intake. Buy a can of cleaner for this valve from the local auto store, give it a spray, and the motor will probably keep running.

Near the front of the intake manifold, you will see the EGR valve. Disconnect the electrical connector, remove the two 10 mm head bolts, remove the lead coated gasket from the intake. Be sure to clean the surface of all evidence of the gasket, using care to not get any into the intake. Place the new gasket on the EGR valve, using the bolts to keep it in place, put the new EGR on the intake. Tighten the bolts up evenly, plug the connector back in, and Rock and Roll.

It is the valve at the top of the stomach. It's job is to keep food from leaving the stomach and coming back up into the esophagus.

If you are referring to intake valves on an engine the engineers use two valves to get a larger valve opening with reduced weight so you can achieve higher rpm without valve float. valve float occurs when a engine spins so fast the valve spring can't keep the valve in contact with the lifter or the cam lobe causing the valve to float.

A valve guide keeps the valve straight. Valve keepers keep the valve secured.

in my exsperience egr valve code not usually the culprit try to clean all intake parts w/carb cleaner fuel inj cleaner may need to check fuel to air mix valve and remove and clean also clean butterfly valve for intake very well if thiis doesnt work repost tom and ill walk u thruogh the rest Tom my question is on 1997 ford exploer the code says insufficent flow to egr valve but replaced everything pertaining to egr system

Valves regulate the flow of fluids in any system. In the human body, specifically, they keep blood from going to the improper places.If you are asking about cylinder head valves there are two types. Intake valves allow fuel and air into the cylinder and exhaust valves allow the smoke to leave the cylinder. The piston moves down sucking in the fuel/air mixture with the intake valve open (intake stroke). The Intake valve closes at the bottom of the piston stroke then the piston moves up compressing the air and fuel (compression stroke). The spark plug ignites the fuel and air when the cylinder is back at the top causing an explosion that forces the piston back down ( power stroke ). The exaust valve then opens and the piston moves back up forcing out the exhaust (exhaust stroke). The exhaust valve closes and the intake valve opens and the cycle starts over.

neccessary, no. beneficial, yes. Your EGR valve is there to keep your oil from getting gummed up.

Too much pressure or defective valve.

They are gaskets under your valve covers that keep oil from leaking out.

I just replaced my egr valve and my light went off, however some reasons for yours not to go off might be that the hose/pipe coming out to the eghaust manifold into the egr valve has enough deposits in it to cause a blockage.....signifying that your old egr valve was good, just not getting any unburned fuel to it. I don't know how to clean the blockage out so maybe search the net and see if you can find out how to do that. perhaps a carborator cleaner will work?

PCV is usually located on the valve cover sealed by a grommet. 1995 F150 2wheel drive with a 302 engine may require removal of the intake manifold. It is connected to an oil separator to keep excessive oil form entering the cylinder combustion chamber.

The PCV valve has a check ball in it, That's what you are hearing. REPLACE PCV VALVE

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It's on the intake manifold, just to the right of the throttle body. Two bolts hold it in place. When you lift the EGR valve, make sure you have a new gasket to replace the old one. At that point, it's just a matter of cleaning the built up deposits. Use a shop-vac to keep the deposits from entering back into the intake.

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The float level needs to be adjusted too. Sounds like the water level is too high in the tank, and some keeps spilling out the overflow ... when that happens, the float senses this and opens the valve letting in more water.

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