by fourby4diesel on Sat, 26 Nov 2016 7:15 +0000
No & yes.
With genuine washers, Last i read, Proper Toyota procedure, is check valve clearance every 40,000k.
That is supposed to include remove injectors.
But, depending what they were when they were last checked, I say every 120k.
Generally, if fitted correctly, they will last 200,000k, so safe to say 120k is fine.
Check oil pickups to confirm.
But, with the BDG brass washers, you could check oil pick ups, & get em out at 40k, but from what I have seen, more will be leaking than not, so get them out. Cheaper & easier to get them out before blocked oil pickups.
Blowby cooks the nozzles, not sure if this will do permanent damage. Time may tell.
New DENSO Injectors are the go! New genuine parts.
Cheers, Anth - Technician - 1KD-FTV
Check your injectors about every 10,000k.
WARNING check oil pickup screen is clear
no chips no tune ups - why increase risk of piston cracking?