This is the stuff that makes small shops look bad

[Hammermechanicman]

These are the plugs i took out of a KT745
Also the shop couldn't diagnose broken choke hardware causing poor running.

 

[slomo]

Are you working at a local Chevy dealer now? LOL Plug on the right is a leaker.

Not seeing the issue with the plugs.

 

[ILENGINE]

Are you working at a local Chevy dealer now? LOL Plug on the right is a leaker.

Not seeing the issue with the plugs.

Here is the correct plug for comparison Notice the thread length difference and the washer instead of the tapered seal

 

[slomo]

Those AC's are not even close. Good find ILENGINE.

 

[Scrubcadet10]

Maybe they thought shorter plugs would work like a non fouler....

 

[Hammermechanicman]

I have a list of things the shop or rather clown with tools did. Wrong plugs, missing screws, broken choke, loose oil filter, didn't change fuel filter.

 

[Auto Doc's]

Maybe they thought shorter plugs would work like a non fouler....

DIY, self-inflicted?

That or the "other shop" was a buddy who had a couple of plugs laying around and just put them in. After all, one plug is as good as another.... isn't it. LOL.

Heck, the parts store counter person could have likely just give them the wrong plugs just to make a sale.