BOSCH 4 prong

[Ronyo]

Anyone knows if BOSCH spark plugs with the 4 prongs work ok or better then ACDelco on 04 Tahoe?

 

[Big Buttons]

4 prongs don't do anything more than a regular spark can. Rule of electricity is that it finds the easiest ground and thats all. So just regular ac delcos work.

 

[Ronyo]

I thought I'll boost performance and they also cheaper than the ACD.

 

[Big Buttons]

Not no but hell no they dont do anything more... ac delcos also last for 100K miles.

 

[Ronyo]

Great, that's all I needed to hear.
Nothing like experience.
Thank you.

 

[godoy]

Great, that's all I needed to hear.
Nothing like experience.
Thank you.

And they break easily and pop!!

Sent from my HTC VLE_U using Tapatalk 2

 

[Ronyo]

I will get the AC Delco.
Looking at the old plug it seem it's running lean,
Any idea how to change that?

 

[livingez_123]

these truck run real clean on the plugs, they very seldom have any color to them. you might find one or two that have a shade of brown on them but nothing like a carbureted engine would have.