Quote:
Originally Posted by skyzend
I've recently had trouble starting my blazer intermittantly
Seems like if the weather is damp or rainy it won't start.
I do not even get a misfire when attempting to start
I've checked the fuel pressure and I have aprox 58 psi prior to turning the key.
I did get going during damp weather ... must have been a fluke ... lol
I noticed that I had a nice spark dancing between the ignition coil wire boot at the base and the ignition coil heavy metal "magnet" piece that runs through the center of the coil.
Aha ... that would definately cause starting failure if things are damp 
I've replaced the spark plug wires, Distributor cap and rotor (general maintenance, need to be done anyway).
And the sparking still happens.
I replaced the ignition coil and the spark is still there ... although not as pronounced.
I've done my best to ensure that the coil connection wire boot is fully seated ... and still I get a spark that comes from the bottom of the boot to the coil magnet. It jumps about 3/8 inch.
Any suggestions on how I can stop this from happening?
Has anyone seen this sort of thing before? |
Arcing is likely caused by to much resistance somewhere in the coil-to-plug(s) circuits. It's just like water in a line - if it can't flow, it's gonna' MAKE a hole in the line somewhere, so that it can get OUT.
Your wires HAVE TO be routed properly too. New wires that are misrouted could definitely cause this problem, as well as old wires. AND, this arcing will cause EMI, which will cause false codes, same as a nuke will. Wouldn't have believed it if I hadn't read it in my vette FSM (after chasin' 3 false codes for 9 weeks summer '08, fully documented photo-diags too
)