spark plugs
Burning Brakes
Joined: Mar 2006
Posts: 915
Likes: 2
From: Lima, OH -- 69 L71 427/435hp
I use the specified AC plugs in mine and have had no problems for the last 2 years...so i'm curious as to how/why your fouling them out so quick?
What symptoms are you having before you feel it's time to change plugs? What do the plugs look like when you pull them?
Basically it sounds like you have more going on than you think...there should be no way your running through 2-3 sets of plugs a year...and to get plat tip plugs, well that's just throwing money to the wind until you find out what's going on...but i'm not a big fan of them anyway.
My guesstimate would be carb tuning and/or ignition problem.
What symptoms are you having before you feel it's time to change plugs? What do the plugs look like when you pull them?
Basically it sounds like you have more going on than you think...there should be no way your running through 2-3 sets of plugs a year...and to get plat tip plugs, well that's just throwing money to the wind until you find out what's going on...but i'm not a big fan of them anyway.
My guesstimate would be carb tuning and/or ignition problem.
Instructor
Joined: Oct 2007
Posts: 167
Likes: 0
From: Penfield NY
The plugs should last much much longer. Platinum plugs are not the quick fix. You need to fix the problem that is causing the fouling of the plugs, not just keep changing them. This could cause damage to the engine. Plugs gapped correctly? Fuel mixture too rich? Oil blow-by in the cylinders? A Chilton's manual has a section showing various basic spark plug problem conditions.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
If you are burning the tips off of them, you need cooler plugs, your carb is running too lean, or you need to fix your ignition problems. Put new plugs in, run the car on the highway for a bit, then pull one plug and see what it 'tells' you. Fix appropriate problem depending on the tip condition/color you find.
