Newbie to diesel, looking at a Duramax LB7

[Zero speed]

Can anyone help me out? I'm looking at a SPOTLESS truck my friend's dealership took on trade. It's a 2wd 2002 Sierra Duramax LB7 with 144xxx. It's in awesome shape and I had my buddy who's a diesel mechanic check it out. It looks to be totally spotless. It's a one owner truck from down south, personal vehicle, I am in Michigan.

Although she's totally spotless and seemingly great (drivetrain looks great, undercarriage looks brand new, everything is super tight)...I'm worried about what seems to be a sure thing of an injector failure with these trucks. I am a decent mechanic, I build my own race cars from ground up...and my close friend is a diesel mechanic so I (think) I can do an injector swap if need be later.

Anyone have any experience with these trucks? Is it really a for sure injector failure? How long should these trucks be expected to live? Thanks!!!

The truck goes retail for $13,500 and I would be getting it at $10,000 out the door from my buddy...just what the guy traded it in for.

 

[Big Block 88]

From my experience ALL lb7's will have injectors fail eventually but then again so will any CR engine they see extreme injection pressures and heat.

I have been through 5 sets in my lb7 with the 6th in my garage waiting to go in. But a buddy has an 02 with almost 300k and it's on it's second set

 

[ThebigGids]

If you can build race cars you can replace injectors. Not a hard job to do, just time consuming. And when they do go out its always a excuse to go bigger:happy2:

 

[Zero speed]

Yeah I figured I probably could. I just know nothinggggggggg about regular cars. I can't and don't build my engines, but we build all our chassis. I lash valves, clean injectors on the sprint car, set timing, change oil, I've flipped the motor over and changed bearings and that's about as far as I go on the motor.

 

[Whitetail Addict]

Get an LLY. The LB7 is a design flaw.

 

[Big Block 88]

Get an LLY. The LB7 is a design flaw.

Lol I wouldn't call it a design flaw the injectors are flawed no doubt but the engines as a hole is very stout.

Lly's over heat and injectors still fail, lbz cracks pistons, lmm crack pistons and emissions suck and mileage sucks, lml emissions suck but mileage is good

All models have there issues, lb7 is a stout engine I wouldn't hesitate to buy one again, that said I may also do the lly top end swap on mine

 

[blk smoke lb7]

Welcome to DD:thumb:

Nothing at all wrong with a good LB7