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6 votes
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What will happen if a small nut is lost under the valve cover?

Sooner or later it will give you headaches and you will need to "at least" remove the valves cover and/or oil sump. If the engine head has open ports that runs down to the oil sump, it may go over ...
Aram Alvarez's user avatar
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6 votes
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Preventing debris from falling in engine while changing valve cover gasket

Yes, debris will cause damage, however the valves cover gasket doesn't stick that hard and if it is the original, they come with some kind of rubber material, very easy to take out even in one piece ...
Aram Alvarez's user avatar
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5 votes

Should a sealant be used, or not, when replacing a molded rubber valve cover gasket?

Generally you don't need to use any sealant on this type of gasket, mainly because the gasket is pliable enough and will seal on it's own. If I were going to use any sealant on it, it would be where ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes

Should a sealant be used, or not, when replacing a molded rubber valve cover gasket?

You don't need a sealent on this gasket. The new gasket will stand much prouder than the flattened gasket you'll be removing, and the WSM doesn't specify sealent anywhere. Torquing the cover down to ...
PeteCon's user avatar
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3 votes
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How can I rectify Replacement filler cap?

Usually "super glue" type adhesives don't stick well to materials like that gasket is made of. It should stay put in the groove for it without any glue. If not, then it's not the right ...
jwh20's user avatar
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3 votes

Preventing debris from falling in engine while changing valve cover gasket

Any debris will cause abrasive damage: the bigger the debris, the bigger and quicker the damage will be. Other than being careful, you can always cover up the engine if you are working in a dirty, ...
tlhIngan's user avatar
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2 votes

Preventing debris from falling in engine while changing valve cover gasket

Fill the area with foamy shaving cream. Do all your gasket work, etc, and then vacuum out the area with a shop vac. wipe off any areas the shop vac can't get to. Rinse away any residue with fresh ...
SteveRacer's user avatar
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2 votes
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Is cap coming off too easily?

If you feel it needs tightening a little, then put a long screwdriver all the way through the holes and tighten it. Don’t overdo it though. You will then need to make sure you have a screwdriver ...
HandyHowie's user avatar
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2 votes

How can I rectify Replacement filler cap?

The easiest way to solve your dilemma is with rubber cement. This would just be replacement glue to keep the o-ring in place. Put some around the entire circumference on the cap and o-ring separately. ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
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Rough idle, loss of power and unstable RPM's with CEL

So it turned out not to be so complicated after all but a rather extensive investigative process. I can't for certain say it was this ONE thing that caused the problem, but rather a combination! It ...
Nouman's user avatar
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2 votes
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How do I remove a stuck valve cover?

The parts diagram shows 14 fasteners. Qty. 8, 2, and 4 of #5, #6, and #8 respsectively. After that you should be able to separate the cover from the cylinder head. If it won't come off with gentle ...
jwh20's user avatar
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2 votes
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Why are valve covers made of plastic if they warp?

While the valve cover is technically "plastic", it's actually a polymer which stands up to heat pretty well. While they don't usually warp, they can warp depending on how hot they get. Why ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Subaru crosstrek, forester, impreza, outback 8 bolt valve cover tightening sequence

The sequence shown below works for the (XV) Crosstrek, Impreza, and Forester (and possibly others) if it has the 8 bolt pattern for the valve cover. Tighten in order from 1 to 8. Good videos for ...
derelict's user avatar
  • 283
1 vote

Optra5 (Reno) bolt size on valve cover

The picture you are showing is misleading because it includes the valve cover. As long as you are referring to just the part outlined below, yes, you can run the engine without it. It is a simple ...
CharlieRB's user avatar
  • 9,015
1 vote
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Is there anything wrong with rocker cover hole?

all that is, is just gunk or dirt or very possibly even oil that was on the cap and wedged in those grooves and has been heated up and cooled down over and over causing it to solidify. What you can do ...
notbarnobi8585's user avatar
1 vote

Can Red High Temperature RTV be used for with a Valve Cover Gasket?

RTV sealant should never be used on gaskets. RTV sealant will cause the gasket to slide out of position resulting in a leak. On cork valve cover gaskets, RTV sealant is only used to hold the gasket in ...
Kevin A's user avatar
  • 166
1 vote
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Can Red High Temperature RTV be used for with a Valve Cover Gasket?

Provided that the red RTV you have is oil resistant (which, according to the packaging you linked, it is), it should be fine for this application. The packaging specifically says it's intended for ...
masospaghetti's user avatar
1 vote

How to "shine a light into the valve cover" to look for sludge buildup?

There is an misunderstanding: There are two kinds of oil sludge. The dark, semi-solid slurry. That is broken down oil (In a very rough sketch). It is a sign of missed oil changes or present problems ...
Martin's user avatar
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1 vote
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How to "shine a light into the valve cover" to look for sludge buildup?

Short trips do cause condensation which may lead to some build up. To do an adequate job for inspection the covers should come off. That being said I don't think it's necessary. For your driving ...
Jupiter's user avatar
  • 3,420
1 vote
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Is oil on the manifold dangerous or will it just burn off?

It really depends, but most of the time you won't get enough oil off of the valve cover to start a fire. You're right, there will be a lot of smoke. Before you start it, you should try and clean off ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Positive crankcase pressure in Astra H 2008 Z14XEP

Sound to me like I would want to rule out a cylinder head gasket, or possibly a cylinder head. You could have a leak from the coolant to the oil passage, which is causing coolant to mix with oil, ...
mongo's user avatar
  • 2,115
1 vote

Can I replace just one valve cover gasket?

You can always change both, one, or none ... it's always your choice. There are repercussions for doing so, though. With changing both gaskets, you fix the issue of oil leakage. It's a little ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote
Accepted

Azera Valve Cover Gaskets

Most valve cover gaskets suggest/require a dab of RTV silicone be applied on the corners of the head (cover>gasket>silicone>head). Looking at a picture of said gasket, it may also need a bit to be ...
Zshoulders's user avatar
  • 1,646
1 vote

Can a Bad Valve Cover Gasket Cause Oil to be Burned?

In my opinion, that's not true: the valves cover have an exhaust outlet to vent any combustion gases leaked from the valves operation, which is normal. That always happens, no matter how new or good ...
Aram Alvarez's user avatar
  • 3,346

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