Anyone know where this oil leak might be from? (1 Viewer)
- Thread starter LC CT
- Start date
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JunkCrzr89
Competent Ignoramoose
That’s your timing belt tensioner. Oil leak is likely from either the TB No. 1 idler pulley bolt or passenger side cam shaft seal. Common mistake when doing TB job is not coating the idler pulley bolt with threadlocker (or buying a new precoated bolt from Toyota).
- Thread starter
- #3
Damn, not what I wanted to hear. The TB was done in Texas at a Toyota dealer 30k ago. I am now in CT with the truck. Work was done before I owned it. This a big job to fix?
JunkCrzr89
Competent Ignoramoose
Unfortunately, dealer service depts. often do not replace anything other than the belt and water pump when doing the job. The timing belt has to be removed to replace the idler bolt and/or cam seal.
- Thread starter
- #5
Ouch, so is this an immediate get fixed item? I just noticed this. No oil drips on the pavement from it.
JunkCrzr89
Competent Ignoramoose
If oil gets on the timing belt it could meet an early death.
JunkCrzr89
Competent Ignoramoose
First thing I would do is remove the drive belt, the 3 bolts and 1 nut holding the passenger side (no. 3) timing cover, and pull that cover off to have a look inside. You’ll be able to see if the cam seal is leaking or not. Removing the no.2 timing cover to see if the idler bolt is the source of the leak is a bit more involved.
- Thread starter
- #8
This is a good start. Appreciate the info. I’ll take a peek and see what I can find.
- Thread starter
- #9
Here’s some pics with the PS cover off. I don’t see oil leaking from the seal. Everything on the PS cam area looks dry to me.
JunkCrzr89
Competent Ignoramoose
Yep - cam seal looks fine.
- Thread starter
- #11
I cleaned the tensioner off, I’m wondering if it’s old grime from a prior leak. I only put a few miles on the truck since I got it. I couldn’t figure out the driver side cover before the rain.
JunkCrzr89
Competent Ignoramoose
Anything is possible because it was done by a dealer. They typically don’t replace the tensioner. But the oil on it looks rather fresh to me. Run it for a while and check again.
