secondary coil ?

[Guest Gp crazy]

Can a Secondary Coil go bad after it heat's up?

BUT TEST OK COLD?

 

i have one cyl that does not fire good at all & it's only once it warms up

the plug has dry black carbon on it. the compression test was 210 psi acrossed all the cyl's ?

to high or is this good ?

thanks jeff

[SleeperRed90TGp]

No such thing as a secondary coil. Although there is a secondary within the coil. Answer yes. If a coil is bad it will generally miss on two cylinders.

 

Buy one coil and replace one at a time till you get it.

 

Jud

[Robby1870]

A bad ICM will also give symptoms of one coil being bad. So, try a new coil first, then if its still there, I bet its the ICM

[god910]

You can tell which cylinders aren't firing by pulling plug wires while it's running. Watch the RPM and if you pull a wire and it doesn't lower RPM, that's your cylinder.

[Guest Gp crazy]

I ALSO NOTICED THE COIL WAS ARCING ALONG THE BLOCK WHEN I PULLED THE WIRE OFF WITH A PLASTIC PLIERS. AND THE RPMS DID NOT CHANGE. IT'S THE MIDDLE ONE OF CORSE DAM IT THAT'S CYL 6 - 3 RIGHT ?

I HOPE TO WORK ON IT TODAY! THE GEO METRO HAS TO GO IN A HURRY !! :!: :!: :!:

 

I FIXED IT ! IT WAS A CRACKED COIL ALONG THE TOP RIGHT HAND SIDE THANK GOD I HAD A FEW SPARE'S AROUND. IT'S ALWAYS GOOD TO HAVE SOME SPARE PART"S LAYING AROUND :!:

THANKS JEFF B