Originally Posted by gwgracing
thank you topspeedlowet like i said every thing checked out and it still wouldnt start so i changed the coil and it started right up the coil i took off was firing but not strong enough so i want to thank those who tried to help thanks ...............Greg
I am glad you were successful starting your engine and you are very welcome.
I had not thought to ask the spark color. The way I checked spark at the dealership was I used a tool called a ST125 that GM spec out for spark checking there HEI ign. What it is made of is more or less a surface fire marine plug with a .75"+ spark gap, and a ground clamp soldered to the side for easy grounding to chassis. If you can not see the spark it is sometimes hard to tell if it is weak, but if it bridges this tool or equal, she'll fire anything it should. MSD ign's and the equal make so much fire power, you can tell just by the sound the spark makes with out a tool.
Any how, I thought this additional info might help you in the future. I keep a ST125 in my basic race car tool box with the test light and D.V.O.M.
I am sure the Snap on or Mac driver will be happy to sell you one of these tools for a unreasonable amount of cash. I think they are worth about $6.00 tops, it is easy to make one from a marine plug or cutting the ground electrode off an extended reach plug would suffice, just solder the allegator clamp to the shell.
Sorry about the edit: It has been a while since I had it in my hand. I checked the tool and the air gap is over 3/4" and not .125 as I said previous.