Spark plugs

[mazdaspeed75]

Ok guys took the plugs out . How do you think they look Looks to me iam still running rich at 9 psi What do you guys think? Thanks Tony

 

[mazdaspeed75]

n

Whats it look like rich ok need to change what what hahahahha

 

[MSP#735]

looks good to me man. looks like normal wear.

 

[DSMConvert]

yep you're rich, which should be no suprise I suppose...might as well go ahead and switch to the 1 stage colder copper plug...

 

[wicked]

DSM-look closer at those plugs,yes he is running rich,but he does not need colder plugs.the combustion chamber is already cooling to fast.

 

[igdrasil]

Looks like platinum plugs. And they are telling you are running a correct A/F ratio and the correct heat range. BUT, I would not use those plugs...it shows running lean randomly.

 

[wicked]

Looks like platinum plugs. And they are telling you are running a correct A/F ratio and the correct heat range. BUT, I would not use those plugs...it shows running lean randomly.

I thought that at first, but by looking at the electrode you would notice why,they need replacement,
and they look like the NGK double PLATS

 

[mazdaspeed75]

h

Looks like platinum plugs. And they are telling you are running a correct A/F ratio and the correct heat range. BUT, I would not use those plugs...it shows running lean randomly.

Hey these are the pzf7g-g extended reach one step colder than stock my aem wbo2 goes in sometime this week to see what the air fuel is doing . So what plug do you think i should run . Ive benn told the stock plug is fine up to 12 psi . I am runnning 9 right now . These plugs have been in for 4 or 5 months now. What you think? Thanks guys