hmmmm....How sure are you on that?

The Isuzu Owners Manual for my 1998 Amigo says the lifters need adjusting every 60,000 miles

There is a sticker on the hood with vacuum line diagrams and hot and cold valve clearance tolerances.

My 1998 Amigo/Rodeo Helm manual lists tolerances and adjusting/shimming procedures for the 1998 DOHC 3.2L V6.

The dealers had no problem looking up parts and labor for the task. I called them and asked them how much it cost to have it done.

I find it odd that all of these vehicle and year specific sources seem to indicate that the valve lash indeed does need to be and can be adjusted.

the 2.2L 4cyl DOES use hydraulic lifters however.

FWIW I have tried the racing the engine technique with no luck. I've been driving like normal as well.

Mike