Updated T-SB-0326-08 Oil Leak

Airbox

Start by removing the connector for the MAF.

Remove this hose from the airbox.

Loosen this screw to release the clamp's grip on the throttle body.

Remove these 2 bolts.

Remove this hose. At this point, check the airbox for plastic clips that will keep it from being removed(they are generally attached to electrical looms). Once they are off, lift the airbox while pulling it away from the throttle body. You may need to twist airbox to get it to release.

Upper Intake Manifold

Remove the coolant hoses from the throttle body and clamp/cover them with saran wrap.

Detach the electrical connector from the throttle body. Go ahead and remove this support bracket by removing the 2 bolts.

Remove the hoses shown in the picture from the upper intake manifold. Cover them as you did the others.

Detach the electrical connector in the picture. Then remove the brackets held on by the 4 bolts(1 not pictured).

There is a bracket that supports some hoses hidden behind the upper intake manifold. It is easier to remove the bracket by removing the bolt than detaching the hoses from the bracket. It is pictured with the UIM removed.

There are 2 nuts and 4 hex head bolts to remove here. After removing these, check for any plastic clips just as you did with the airbox. It should then lift off(watch for hoses blocking your path at the back).

No more hanging wires!
Time to get those pesky electrical harnesses out of the way. But first, carefully wipe the intake holes and then cover them with tape. Don't want anything to fall in there!

Then the fun begins! You may feel the want to label all of this, but it really will just fall back into place when you go to reinstall it. Carefully disconnect the electrical connectors from the coils, fuel injectors, and VVT system components(ones up front). There are multiple plastic clips attaching the wire looms to the valve covers. To remove them, put a screwdriver under them and lift. There was a ground wire on the driver's side near the alternator that I removed to gain clearance, and there may have been something on the passenger side too, but I can't remember. Just make sure you have the clearance you need and label anything you take off.

I secured the wire looms to the firewall using zipties.

More coming soon!

 

Crawling under my truck this past weekend, I found oil building up. I purchased an aftermarket warranty when I bought my truck so I just took it in for them to check out. They called today and yup, timing cover was leaking. Fully covered by my warranty minus the oil filter. $100 deductible +$5 for the filter and I'll be all fixed up. After looking at some of these DIY pics, I'm glad I got the warranty.

*picked up my truck tonight. Total cost would have been $1300 out of pocket. Oof.*

 

i have a question i have a 2007 tacoma 4.0 with 110,000, my timing cover is leaking, but i have a question i have a factory supercharger is the teardown the same or are there additional steps to complete the job, any info will help me, this will be the first time doing a big job on my truck

 

tacomaSuper619: I would probably say that it would be best to be sure that you are prepared to uninstall and reinstall the supercharger, though I could only say for sure if I knew exactly how it is installed. My advice to someone who has never done a big job on his truck is, yes you can do it, but I would get help from someone who is knowledgeable if possible. Also, I have been lazy and not finished my write-up, so hopefully I can change that soon.

 

Why isn't there a recall!? Wished I would've read this 2 years or 45k ago!!! Dealership is wanting to charge me $1300 to replace a $15 part like everyone is talking about ... hoping to find someone / place else to change this for less out of pocket

 

anyone have any pics of what this leak looks like? my fucking dealer wants to charge $45 bucks if i bring it in and it in fact is NOT leaking... so i want to make sure it is before i do it...

 

You will be able to see this easy. I had a oily, gunky slick down the passenger side of the engine all the way back to the transmission. If your power steering pump is covered, this will probably be the culprit(that or a bad valve cover gasket). Here are the pics you requested.

Arrow points to where the leak was coming from. It was not clear where exactly the leak was until the timing cover was removed, but it ended up being exactly where the TSB said it would be.

I knew it wasn't the valve cover because there was no seepage present until the arrow.

The valve cover after it was removed and partially cleaned up.

And here is the proof that it was leaking out the side. Sorry the picture is a bit blurry, but its all I got.

Like I stated before, I will get the rest of this write up done, but I also have a med school application I am working on, so this might take a while. If I would have had any kind of warranty, I would have taken her in, but as the 2nd owner at 90000 miles, there was nothing I could do. Hope this helps you identify your problem.

 

Sorry you are having this issue too...I think the reason it isn't a recall is there is no apparent risk of bodily harm. They only do recalls when something is unsafe. I guess until someone's truck goes up in smoke, we have to deal with it. The real issue with the cost isn't the parts, but the labor. If you have a reputable independent shop near you, I'm sure they could do it cheaper. Toyota charges an arm and a leg just to take a look! Maybe I'm just cheap

 

Guess I'm pretty cheap myself because I pulled out the paper work that I kept for my 'Platinum Extra Care Service Agreement' & it as far as I can tell this should be covered with this warranty. Called to confirm this from the Extra Care call center & now awaiting a call from the local service department to see if they will in fact cover this with the extra coverage I purchased or once again try & blow smoke. Fingers crossed that the $$ I've saved up for wheels & tires doesn't have to go towards this instead ... thanks for everyone's 2-cents & especially for this forum ... I've been able to read through all different topics that it's answered so many questions I was unable to find any where else HI5!!!

 

a lot of you talk about TSB what is that??

 

Technical
Service
Bulletin

They are written by Toyota and advise techs on common problems. They are generally not given to the public, but you can't stop the internet. Here is the list for 2nd gens: http://www.tacomaworld.com/forum/2nd-gen-tacomas/7107-tsb-list-2005-toyota-tacoma.html

 

Thanks for everyone's input! I have to set the time aside to do this

 

Starting on this endeavor, with the help from my buddy. I cant wait to get this done. It has been haunting me for the last 2 months

 

Just got a call from the dealer saying we have a Timing Cover that is Seeping. Of course my extended warranty ran out last June. My truck only has 78,000 miles on it. I am annoyed that to fix it they quoted me $1230.00!!!

 

Subbed

 

Ok I'm doing this. Can people give me advice on which brand to buy for the gasket set? Is there really any difference?
Also it seems the general consensus is to replace the valve cover gaskets and water pump at the same time... Right? Any brand preferences?

 

Done at 165,000 miles. Not too hard... yet not very easy. Just a lot of labor to get everything apart Anyways, I too circled where the leak was. I also replaced the water pump, idler pulleys, and serpentine belt. Much smoother sounding now

 

@northwesttaco

 

I have a 2006 Tacoma Automatic Transmission SR5 that has the oil leak. I am looking at doing this myself, but have a question. Do you have to remove the oil pan to get the timing chain cover off?

 

I think some have done it without removing the oil pan. But, the actual approved procedure requires the oil pan. Both lower and intermediate pans.