Test driving a 89 trooperII need some info

[InJ3cted]

I'm going to be test driving a 1989 trooper II 4cyl for a winter vehicle and I was wondering:

What are the procedures to engage 4wheel drive?

Are these EFI or MPFI

What are troopers notrious for having problem wise, so I can check... I'm new to isuzu's I understand from reading other forums that their heads can crack but it can be prevented with simple matainence. Also adjusting the valves? well thats what i've heard so can someone confirm this.

TIA

[94redrodeo]

They are MPFI
The four wheel drive is manually operated and not shift on the fly some have auto locking hubs and some have manual locking hubs. to put it in 4wd put the transmission in neutral and move the stick into the desired position.
the issues you mentioned about the engine are the main problems.
also check for broken CV boots

[CPOM]

MPFI is a type of EFI, so that trooper is both
check oil color, should be light brown with no bubbles
periodic adjusting of the valves is required to prevent damage, they get tighter as they age due to their design.

listen for strange noises, smells, drips, leaks etc.

get under the truck and look at the condition of the frame,. It's going to be rusty but you shouldn't be able to poke a hole anywhere with a screwdriver or see holes. haha...

[InJ3cted]

Thanks for the responses

I guess what I meant was if it was multi port, or dual point like 2 injector carbuerated type thing.

Ok I'll check for the rust under the frame, I live in utah so there will be some.


anymore responses would be helpful maybe even a guide on how to adjust the valves I know on hondas that they are squash nut type and you use feeler gauges and loosen or tighten as much. How are the Isuzu's set up?

[800XL]

Another spot to look for rust would be around the fender wells and the underside of the cab floorboard. I had a truck from Utah and the road salt had done a number on the floorboard and the fenders just rear of the tire.

The valves have a bolt at the valve end of the rocker arm and a lock nut on it. You loosen the lock nut, slide the feeler gauge between the valve stem and the rocker, then adjust the bolt. Then you tighten up the lock nut and recheck them as it will change the reading. The first one might take a little practicing to get a feel for how tightening the lock nut affects things, but otherwise it is pretty simple.

[InJ3cted]

hehe I bought it it was for a fair price, Now for some matainence and cleaning. Thanks for your responses

[InJ3cted]

Anyone know the Valve lash specs?