Just installed new plugs

[blackty]

Installed ac cr42ts over the weekend, stomped on it for the first time yesterday and feels like there is a miss. Grounded all 6 plug wires on dist. cap (new last month). Can hear a distinct miss at idle. When I hold my hand a few inches from exhaust, can feel a puff every once in a while. Still sounds like a miss, right? Have read on the sight about cr43ts plugs, any better? Regardless, should not miss.

 

[CLONE]

Check the plugs for cracks and the plug wires for damage. Ignition problems are very common. Use a good set of wires like Taylor Spiro-pro's and a good cap and rotor like the conrad unit from autozone. The many FAQ's floating around address the ignition over and over again. There's a good reason for that

Do not use cr43ts plugs. Use cr42ts, NGK ur5, ur6, ur5ix or ur6ix spark plugs. Those are all plugs that I have personally seen work well and would recommend (I have tried all but the ur5ix in my own truck).

 

[blackty]

Thanks, I was thinking a wire could have gotten damaged. It is a Conrad cap and rotor. I'll pull the plugs tomorrow and look for the wet spot. Where in Pa are you?

 

[grahamstein]

I was just wondering, what are the negative affects of using the cr43ts plugs? and just to clarify, those are the ac delco rapid fires right?

 

[CLONE]

I was just wondering, what are the negative affects of using the cr43ts plugs? and just to clarify, those are the ac delco rapid fires right?

cr43ts is a hotter plug leading to the possibility of more pre-ignition.

They are not rapid fire's.

 

[blackty]

Pulled plugs today. Two of them had scorch marks on porcelin below electrode. Good thing I bought 8. Runs like a sumbitch now, better than before plugs. Also drilled (4) 1 3/8" holes in air intake. Gonna go for a spin in a few.