Next weekend I am going to change the timing Belt on my 99 4Runner with 185,000 miles, I will also be changing the water pump, tensioner, both Idler sub assemblies and the thermostat.

My question is should I change the cankshaft and cam seals if they are not leaking?

What do you guys think?

 

i say if it aint broke dont fix it. but if you got the skills and the money, it definitely wouldnt hurt anything. personally i'd wait till they went bad, then replace them

 

mine looked good so i didn't try to replace them