IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: Sixpack on June 27 2013, 02:05:37 AM

Title: Plugs
Post by: Sixpack on June 27 2013, 02:05:37 AM

Pulled the plugs out the car today and the ceramic below the electrode was orange any ideas why? plugs looked okay did a compression chk also number 3 cyl was at 125 psi the others were 135 -130 the plugs got me stumped?

Title: Re: Plugs
Post by: Steve Wood on June 27 2013, 11:38:13 AM

You been putting octane booster in the tank?  Which is a waste of money btw :)

Title: Re: Plugs
Post by: Sixpack on June 27 2013, 07:32:57 PM

actually been using race fuel leaded stuff

Title: Re: Plugs
Post by: Steve Wood on June 27 2013, 07:34:06 PM

the it is an additive in the gas...old age is getting to me but it is something like MMT or such...turns the plugs red

Title: Re: Plugs
Post by: tb3 on June 27 2013, 08:55:40 PM

Steve,  If  your chip/tuned for, say... 91 ocatane, and your highest octane option at a out of town gas stop is 89.  Might a true octane booster put you back (or close) in the safe zone for boost?
I don't know, is why I'm asking. 

Title: Re: Plugs
Post by: Steve Wood on June 27 2013, 09:22:56 PM

Nope.... octane boosters typically increase octane about 1/3 of a point...so 89.333

with a modern chip reduce the timing a couple of degrees would be the better idea

Title: Re: Plugs
Post by: tb3 on June 27 2013, 09:30:13 PM

dang it!