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Replacing valve seals

Do you put locktite on the inner seal before mounting g valve stem seal

Posted by Anonymous on

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: How to replace valve stem oil seals?

To change any valve stem seal, you need to remove everything above the valve itself, including the spring. On most engines it is possible to do with the heads on the engine depending upon how much room you have. To keep the valve from falling into the cylinder, I use a length of 1/4" cotton rope (like you hang clothes on). Insert it into the cylinder when near TDC and gently turn the engine till it's pressing on the valve, Then when removing the spring the rope will suport the valve. There is a spring removal tool that looks like a larger version of a top terminal battery cable remover. You can use that to take spring off. DO NOT TURN THE ENGINE 'TILL ROPE HAS BEEN REMOVED. TURN ENGINE BACK SLIGHTLY TO RELEASE IT. If you find that any valve stems rock back and forth more than a very tiny bit, remove the heads and have the guides replaced. If your repair requires cams to be removed, be sure you have instructions to re set cam positions (same as timing chain replacement) Some people retain the valve with compressed air, but if the air flow stops or you press down on the valve it can relaease and fall.
Good sure that there is a reason for doing this work and that you don't have worn rings.

Posted on Jul 28, 2009

  • 6674 Answers

SOURCE: replace valve stem oil seals

Make up an airline fitting that will screw into spark plug hole, or buy from autoparts , or tools supply place. You put compressed air in cylinder while changing, which holds valves in place.

Posted on Feb 21, 2009

  • 86 Answers

SOURCE: 94 toyota paseo need to replace valve stem seals

YES if you don't have the right tools
or the know how.
may want to take this one to a good shop.

Posted on Sep 09, 2009

  • 131 Answers

SOURCE: 1988 Lancer, 5 speed, 4G15 engine. Blow by hose

This problem is usually the result of worn rings but since you already did that, then check the passage that the PCV valve is connected to. It might be clogged, causing a restriction. If that isn't it, then drill a hole at least a quarter inch in size in the top of an old valve cover filler cap and install it. Drive the vehicle and see if things improve. If they do, then check to make sure that you have the correct PCV valve installed.

Posted on May 22, 2011

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1 Answer

Can I fit valve stem seals without taking the head off on 1600 sentra 1997

No you can't..
Fitting valve stem seals involves removing the valve springs. This means the valve has to be held in place by a valve spring compressor (bought from almost any spares outlet). The springs are compressed by placing one end of the compressor tool on the valve face and the other end over the spring cap, then squeezing the tool to compress the spring, then removing the split collets that hold the spring in place, removing the spring cap and spring, then eventually you have access to the stem seals.
The head has to be removed to accomplish all this.

Mar 28, 2014 | 1997 Nissan Sentra

1 Answer

Valve stem seal

Value stem seals are under the valve cover.(under the top of the engine)

Worn value stem seals will allow oil to blow into cylinders during cold start.

NOT a job for beginner,

Jan 11, 2014 | Cars & Trucks

1 Answer

Mercury mystique throws out a huge amount of smoke and the engine idles what can it be ?

Smoke from an idling engine that shows when the engine is reved up indicates worn valve stem seals and worn valve guides. If the engine has some age on it then the stem seals are probably hard and cracked allowing the oil to be drawn into the combustion chamber past the valve stem. A skilled mechanic with the right equipment can replace the seals without removing the head so ask around for some one who does it on a regular basis.

Sep 14, 2013 | 1995 Mercury Mystique

1 Answer

How to replace vave seals 93 mitsibishe montaro

Your valve seals cant be replaced by removing your valve cover. The valve rockers assembly needs to be removed to access the valve stems and springs. You need a valve spring compressor to collapse the springs and remove them making sure that the valve does not drop into the cylinder area of the engine. You can wrap a rubber band around the stem of the valve so it does not fall in or remove spark plug and push a rag into the cylinder to also stop the valve. Then you would grab the valve stem seals with a pair of pliars and by lifting and turning them, work them out of the head. They should come out rather easily as you twist back and forth. Replace each one with new seals being careful to seat them all the way down against the head. Replace the valve springs and spring keepers exactly how they were prior to removing them. After seals are finished, reinstall your valve rocker assembly as a unit and then readjust your valve rockers if they need to be done. This is a moderately hard job for the backyard mechanic and if you are ready to take it on, please purchase an auto repair manual for the vehicle and review the steps prior to the work. This will save you time and money in the long run.

Aug 26, 2013 | Mitsubishi Montero Cars & Trucks

1 Answer

How do i replace valve stem seals on 1990 nissan pulsar GL

To replace the seals in ANY cars valve stems you need to buy the valve core. They screw into the stem.

Apr 23, 2011 | 1990 Nissan Pulsar

1 Answer

Hi my ford granada 2.8 carb 1984 started idleing rought and kicking blue smoke out just bought new head gasket set but the valve stem seals are tight and is that a problem danny

Blue smoke = oil is burned. You have an oil seal that is worn out so yes, the valve stem seals might be the ones. Replace them and check again.

Aug 04, 2010 | Ford Granada Cars & Trucks

1 Answer

Replace valve stem seal

do you have an air compressor, valve spring compression tool, etc. if not get it done

Oct 27, 2009 | 1990 Ford F150

2 Answers

1994 chevy cheyenne smokes

If its white Check your water is keeping its level Could be head gasket bown.If its blue then its burning oil witch could be valve stem seals or piston ring wear,

Jun 03, 2009 | 1994 Chevrolet C1500

3 Answers

WHAT'S LEAKING? Is it the valve stem seals or piston rings???

If it is the valve seals,you can replace the head,but it would be cheaper to replace the seals,If you pull the head,you can do a leak down test on the pistons to check the rings as well.

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Jan 23, 2009 | 2004 Ford Crown Victoria

2 Answers

1993 TOYOTA TERCEL 1500cc Valve Seals Replaced now smokes much worse

You either have had the wrong valve seals installed, they are physically missing, or the valves are incorrect (too loose in the guides/stem too thin). The rocker arm seals will not contribute to your issue. If it did not have the oil smoke before you took the head off, the issue is with whatever the machine shop did. Valve seals have to fit TIGHT, or oil will go down the valve stem into the intake.
Take the head back to the machine shop & tell them to fix it. For free.

Aug 23, 2008 | 1993 Toyota Tercel

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