BlueLS

when i started taking off panels to get to the valvecover bolts it was obvious it leaking around the valve covers it was even leaking a lil on to the driver exhaust manifold. i hope tighten the bolts work.

jeriah77

Andyman32@but you are talking about Jaguar, not Lexus. I didn't see half-moon from the rear.

python

iTrader: (4)

its there...semi-circular plug and a circular plug...theres 2,maybe one is part of the valve cover gasket set?

jeriah77

Python@-I think you are right. No, they are not included with valve cover gasket set.

python

iTrader: (4)

i know im right bro...i have the exploded view right in front of me

GSteg

iTrader: (15)

Remember to add some RTV at any corners if you plan on replacing the gasket. I HIGHLY recommend Toyota's Form In Place Gasket (FIPG). It's the best damn thing ever. Liquid rubber might be the appropriate term. Slightly expensive, but I honestly can't go back to using some of the Permatex stuff anymore. My buddy who runs a mechanic shop uses it to make valve cover gaskets all the time and the failure rate is 0%.

jeriah77

GSteg@-I used Permatex Black Ultra, I am planning to change the timing belt at the next 50K so I hope it's good enough.

Guys, I took the big circular plug off (2" diameter) along with semi-circular camshaft (I don't know what it's called, it's holding between the head and valve cover with 2" diameter circular plug) from the rear of the head on driver's side. I put some ATV around the plug and put it back on. I strongly believe oil was leaking out of the plug.

By the way, I accidently stripped and broke off one of valve cover bolts. I hope it's okay with seven bolts if I tighten much more?

python

iTrader: (4)

was it sealed with rtv before?? what is the plug made of? i think this is whats causing my oil leak as well...thx

jeriah77

Python@-no, it was not sealed with RTV before. I believe 2" diameter plug is made of aluminum, it is covered with plastic or paint. From a human's eyes, it looks like black plastic but when I touched it. I could feel the weight. I didn't put ATV on the plug on the passenger's side because it didn't leak plus it's VERY VERY difficult to remove and put it back on!!! I wish there is a door for us to enter to repair on the back of the engine from the floor panel area. Maybe I should make one? HA

python

iTrader: (4)

there is a way for that to leak oil then correct? if so my car is finally going to get fixed

deanshark

NO it wont be OK with a broken bolt. What, are ya nuts? There's alot of pressure that's gonna push oil right out of there. If you tighten the other bolts more, all you're doing is crushing the gasket. You're not helping out were the broken bolt is at all. My advise would be take off the valve cover, you might be able to grab and turn out the broken bolt with vise grips or something. If not, you can probably get it with an easy out, they're not that tight. Either do it right or you're always gonna have an oil leak.

jeriah77

deanshark@-So you have been there?

deanshark

No, and I wouldn't even dream of leaving a bolt out. Maybe on an interior plastic panel but not on something as important as a valve cover. Common sense will tell you if there's a bolt there it needs to be there and tightened to the correct torque.

jeriah77

deanshark@-Ok, I will let you know after 1,000 miles. Wish me luck!

deanshark

Ha, let me know after 10 miles. Is the bolt one that you can see? I mean, an easy out will only take 15 minutes to get it out if you can see it and then ya don't have to keep checking it to see if it's leaking.