Spark plug diagnostics

Chenn2389

Member
Joined
Nov 30, 2020
Messages
202
Reaction score
89
Location
Gilbert, Arizona
so you have a bad set of plug wires then. Do you hear a clicking/ticking sometimes? That is the arcing of the wires.
It wasn't the plug wire arcing, it was the terminal on the distributor arcing to the intake when it hit its turn in the firing order. When I got down around plug 5 the terminals were shocking me as they arced to my hand so I gave up trying to test it that way.
 

ttocs

Post Whore
Joined
Oct 9, 2009
Messages
27,658
Reaction score
3,585
Location
Evansville Indiana
It wasn't the plug wire arcing, it was the terminal on the distributor arcing to the intake when it hit its turn in the firing order. When I got down around plug 5 the terminals were shocking me as they arced to my hand so I gave up trying to test it that way.
are your saying it was doing this through the plug boots or the insulation around it? The plug wires are installed correctly and its arcing to the intake and shocking you?
 

Chenn2389

Member
Joined
Nov 30, 2020
Messages
202
Reaction score
89
Location
Gilbert, Arizona
are your saying it was doing this through the plug boots or the insulation around it? The plug wires are installed correctly and its arcing to the intake and shocking you?
No, it arcs from the detonator cap terminal to a ground. When I removed a plug wire from it while engine was running. No wire in that spot on cap on distributor so it had to arc to a ground. In my case my hand or the intake manifold.
 

ttocs

Post Whore
Joined
Oct 9, 2009
Messages
27,658
Reaction score
3,585
Location
Evansville Indiana
No, it arcs from the detonator cap terminal to a ground. When I removed a plug wire from it while engine was running. No wire in that spot on cap on distributor so it had to arc to a ground. In my case my hand or the intake manifold.
oh, ok then thats not a big deal for the motor, not that electrocuting yourself is necessarily a good thing. Try not to touch those while its running.
 

Latest posts

Forum statistics

Threads
74,871
Messages
1,452,367
Members
13,557
Latest member
afield00

Members online

Top