Hello All,

I've got a '93 4Runner with the 3VZ engine, 135k miles and counting.

This past weekend I removed the valve covers among other things to fix some oil leaks. As I was writing down a list of parts I would need to put everything back together, I started thinking about what else I should go ahead and "service" while I'm in there.

So I was hoping to hear your suggestions. Of course, valve clearance adjustment comes to mind, but what about injector o-rings (for example)?

Thanks!

 

Welcome to Yotatech.

Good title. Good post.

Perhaps the timing chain, tstat, water pump since you are that far.

Plugs, wires, cap, etc.

 

welcome to YT...like Brian (wabbit) said, great post...well thought out.
I think between you and what Brian suggested it is just about covered...

If you need it, there is a link to online service manuals in my sig line...

 

Thanks for the help. I'm trying to find a good balance between preventative maintenance, and "if it ain't broke, don't fix it" mindset.

I put dye in the coolant and noticed that there is an ever-so-small external coolant leak from the RH head gasket. In about 50 miles of mixed city/hwy driving, the coolant leak was about five drops worth.
Is it easy to remove the head & replace the head gasket without pulling the engine? Or, do you think the coolant seep is negligible?

 

I'd say that's a pretty small leak. I wouldn't worry about it but those motors have a history of blowing the headgasket so I'd start amassing the things needed to do both sides. Things like the head gasket, manuals tools etc. Or you could have a shop do the work. The V6s I've had looked to be a pain to take out but I dunno... never pulled one. Just my 22r