On my 90 4Runner, I need to access the very front driver's side fuel injector, the one closest to the distributor.
It looks like I can access the fuel rail by just removing the throttle body. Is this possible or do I have to pull the plenum, again?

Thanks,
Phil

 

I've tried your idea - still had to raise the intake plenum by an inch or so. Not a problem if the intake plenum gasket is new, but if it hasn't be replaced in the last 3K miles or so, you'll probably tear it and drop a bunch of gunk into the intake manifold. I'd say - as long as you're doing one injector, pull all of them and replace everything rubber and all of the gaskets - it'll save you a headache later in the year.