How do these spark plugs look?

[LAC_STS]

Sorry if for the blurryness but it was a PITA to try to get my Iphone 4's camera to focus on the plug.

How do these look?

What is the preferred plug for the 5.7 OMC engine?

These are what came in the engine when I bought it.

They are Autolite 25.


As always, thanks

 

[zbnutcase]

Re: How do these spark plugs look?

Autolite plugs are decent for car use, but the shells rust WAY too quickly for marine use. Use NGK or AC-Delco MR series instead.

 

[Don S]

Re: How do these spark plugs look?

What pictures ????????

 

[LAC_STS]

Re: How do these spark plugs look?

Sorry thought I attached them.

 

[Bondo]

Re: How do these spark plugs look?

What is the preferred plug for the 5.7 OMC engine?

Ayuh,.... AC Delco MR43T sparkplugs...
The 1s in your hand look normal...

 

[antsmands]

Re: How do these spark plugs look?

Sorry thought I attached them.

View attachment 63616

View attachment 63617

Those plugs look fine to. May just need regapping due to normal electrode wear.

 

[dgopetactical]

Re: How do these spark plugs look?

Looks good to me, clean them up a tad and re-gap.
Denny

 

[EddiePetty]

Re: How do these spark plugs look?

.....here's a color chart provided by..........Champion.

http://www.verrill.com/moto/sellingguide/sparkplugs/plugcolorchart.htm​

 

[tractoman]

Re: How do these spark plugs look?

I use the 25's in my '76 F250 with a 460. I wish mine looked that nice.