104 plugs ... WRONG !
Just a quick post to tell others. Going on a past thread I installed Autolite 104 plugs ( gapped at .055 ) after my mods.
SEVERAL members stated that this may be too cold of a plug. Being the hard head that I am I forged ahead.
To make a long story short, I'm pulling them out this weekend and installing a set of 605'*.
I get cold misfires. While they have not been in long enough to foul they do have a dark grey tint to them after about 500 miles.
They work great when warm. I just can't take the cold weather start up compromise.
Just trying to prevent others from urinating away money for no reason. It pays to listen.
It cost to be a hard head.
1992 SSEI Bonneville with all the options except heated windshield and ride control.
Mods Include 1998 SC'd Delco Ignition with Belden wires.
Autolite 104 plugs ,180 degree tstat
K&N Filter with ricepipe, 2.3 inch pulley with ZZP idler
Ported exhaust headers, Poly end links.
High flow cat. TPS tweak, Boost bypass mod
High low fan override.
" Always try it yourself. I bet the guy you pay to repair it broke a few before he fixed your'*. "