Question about 1999 Toyota Avalon

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Leaking from rear main and knocking in enegine what can i do?

I was told that i need to repair the rear main seal, but it is also knocking, I put in some bar's leak rear main seal repair my question what do about the knocking and can i still add something for the knocking, because right now I dont have the $800 to get it fix saving up for, so is there something i can for a tempoary fix?

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That knocking may be permanent internal damage due to low oil or a bearing. If u still have the knocking w oil full, get ready for some serious engine work. Think about how much u want to invest. Fixing the seal is 1 issue but u may have 2 very expensive issues. Rebuilt motor would be my suggestion. Good luck

Posted on Nov 06, 2017


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Posted on Jan 02, 2017



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SOURCE: engine oil leak

Big job....
You have to drop the motor and tranny out as one unit. It comes out the bottom.
Once you have it out, it's pretty straight forward, seperate the two, change the seal, reassenble, put the power unit (motor and tranny) back into the car.

That's the simplified version of it, but that the overall idea of how you have to do it.
If you need additional information, please let me know.

Posted on Sep 07, 2008


  • 12 Answers

SOURCE: oil leak on main seal

Well those are hard to do it by yourself so I suggest you go to your auto repair shop and have them do it. Of course you can go to different shops so you can see the difference in pricing if any.

Posted on Jan 20, 2009


  • 188 Answers

SOURCE: 94' toyota 4runner rear differential seal

1st, check to see ifthe vent is plugged on the Differental????? This will make the oil to come out when the oil heats up amd makes gases & pressure. The gases & pressure has to go somewhere!!!! Did the person put a new Crush sleeve, to take the slack out of the pinion, which will makes to pinion move from side to side. Replacing it is no problem. Just time! Gear oil, Seal, Gasket, & Crush sleeve. Place everything on the ground in the order that you take it off. Also check upper & lower bearing & races to see if they need to be replaced. This will also make slack, which will mess up your seal, and star leaking again. Good luck,and take your time.

Posted on Feb 08, 2009


  • 10 Answers

SOURCE: oil leaking from rear main seal, how hard is this

Replacing the rear main seal is kind of a long one. It involves seperating the motor and trans. Depending if it is manual or auto,would weather you have to remove the flex plate (auto trans) or fly wheel (manual trans). Then of course there is removing the old seal, making sure it is free of burrs and putting the new one in, and reassembly.

Posted on Mar 28, 2009



  • 85222 Answers

SOURCE: 1989 Toyota PickUp Truck V6 4x4

there is no way to fix a rear main leak except to replace it, sorry but if there was a way to jerry rig this every tech would use it.

Posted on Jul 27, 2009

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