1999 Tacoma 2.7L oil leak from timing chain cover
#1
1999 Tacoma 2.7L oil leak from timing chain cover
Hey all,
So I have had my truck, 1999 2.7L 4wd 5spd, for about 3 years now. Have done a bit of maintenance on it since buying, new clutch,flywheel, axle shafts, exhaust, etc, nothing much to the motor except routine stuff. My problem is I have an oil leak that has gotten worse over time, started out as a drip or two and now over 4k mile oil change intervals I probably add 1 - 1 1/2 quarts. Its leaking from the timing chain cover. I don't mind replacing it, however it's a big job. I have something else to drive so if it takes a month working on weekends its no big deal. I am just wondering should I go ahead and change all the components like timing chain, tensioners, water pump, etc, while I am looking at it with the cover off. Or is there any product that actually helps fix oil leaks. The mileage is 159,000 miles btw. Thanks
So I have had my truck, 1999 2.7L 4wd 5spd, for about 3 years now. Have done a bit of maintenance on it since buying, new clutch,flywheel, axle shafts, exhaust, etc, nothing much to the motor except routine stuff. My problem is I have an oil leak that has gotten worse over time, started out as a drip or two and now over 4k mile oil change intervals I probably add 1 - 1 1/2 quarts. Its leaking from the timing chain cover. I don't mind replacing it, however it's a big job. I have something else to drive so if it takes a month working on weekends its no big deal. I am just wondering should I go ahead and change all the components like timing chain, tensioners, water pump, etc, while I am looking at it with the cover off. Or is there any product that actually helps fix oil leaks. The mileage is 159,000 miles btw. Thanks
#4
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Your going to need to replace the HG if you take off the cover. Taking off the cover without replacing the HG will result in a bigger leak. Id suggest a valve job while you've got the head off if you haven't already
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#9
Timing chain is a lifetime part according to FSM. Toyota water pumps on a 2.7L are bullet proof. I would just replace the head and timing cover gsket. I would inspect the guides on the chain for excess wear but at 159K, I expect you will be fine.
#10
Registered User
Uh, yes. Toyota has an array of different sized shims. Crappy part is that they are 7 bucks each.
To do it, you either need the SST's or you can do it the easy way and pull the cams.
https://www.yotatech.com/forums/f128...t-tech-226997/
To do it, you either need the SST's or you can do it the easy way and pull the cams.
https://www.yotatech.com/forums/f128...t-tech-226997/
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