This is the stuff that makes small shops look bad

Hammermechanicman

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #1

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

 

S

slomo

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #2

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

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #3

slomo said:

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

Not seeing the issue with the plugs.

Click to expand...

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

 

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slomo

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #4

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

 

Scrubcadet10

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #5

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

 

Hammermechanicman

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #6

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.

 

A

Auto Doc's

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• Jul 29, 2025 / This is the stuff that makes small shops look bad

• #7

Scrubcadet10 said:

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

Click to expand...

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.

 

F

Forest#2

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• Aug 1, 2025 / This is the stuff that makes small shops look bad

• #8

I've seen that same thing and more stuff just as bad on a really nice onan engine. (as one example of several)
The wrong plugs had been run so long that I had to chase the threads for the longer reach plug threads due to carbon build-up.
Engine was on a really nice looking Case 448 that I bought non-running. Bubba had messed up several other things, carb, ignition due to wrong plugs being installed.
Gets really disgusting trying straighten out a Bubba mess.

 

ILENGINE

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• Aug 1, 2025 / This is the stuff that makes small shops look bad

• #9

Order a carb kit and accelerator pump kit for a Rehlko Command CV730 last week and just got around today to pulling the carb. and found that some yahoo had replaced the carb with one from a Courage twin. So different carb kit, which won't be here until middle of next week, and now I am not even sure how it will run after repairing the Courage carb.

 

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bentrim

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• Yesterday at 11:05 AM / This is the stuff that makes small shops look bad

• #10

Oh my. How about a homeowner or his "hold my beer" I'll fix it buddy used a RC12YC in aflat head that used RJ19LM. "it just won't run".