blue hazy light, under the hood?

Grumpy · Feb 4, 2016

Question grumpy, I happened to open my hood to check oil at a rather badly lighted rural gas station yesterday night, and there seemed to be a blue hazy glow or light from the area near the valve covers near the distributor, I did not hear any arcing and this morning I inspected the wires rather carefully and don,t see any burnt spots so is this normal?

testing ignition coil
http://www.aa1car.com/library/ignition_coils.htm

read the related linked info 90% of the useful info is almost always in the links and sub-links
http://garage.grumpysperformance.co...urrent-flow-grounds-and-more.3504/#post-54625

http://garage.grumpysperformance.co...hooting-tip-for-electronics.11317/#post-51557

http://garage.grumpysperformance.com/index.php?threads/decent-value-in-ignition-wire.6760/

that "light" It not all that rare , especially with older ignition wires, with limited insulation, potential, you might want to try moving the wires while the engine idles while its dark while the car sits at home in your drive way to find or isolate and damaged or loose ignition wires,
Good ignition wire measured with a multi meter will generally show less than 100 ohms per foot and ideally well under 50 ohms per foot,
and keep in mind electrical energy follows the path of least resistance,
so you might want to do a tune-up and swap in a new distributor cap, rotor and spark plugs and watch the video,
check your ignition wire OHMS resistance then replace them with a high quality replacement if you need too.
Having fairly decent quality ignition wire routed to protect the wires insulation,, having low resistance ignition wire and good electrical grounds , new properly gaped, spark plugs and new rotor and distributor cap, will usually cure ignition energy leakage issues.
the insulation layers break down over time due to engine heat and age.
the closer to headers or other hot surfaces the ignition wires are routed the faster they will tend too deteriorate , the oil or fuel leaks on wires accelerate deterioration rates , but failure to route the wires to give maximum clearance and protect them from wear caused by engine movement will tend to cause damage over time!
I'M AMAZED THAT BY THIS POINT IN THE THREAD,
not a single persons suggested measuring the OHMS resistance end-to-end on each ignition wire!
you should find less than 100 ohms per foot with quality ignition wire

or suggested verifying your engine ground straps and verifying your ignition timing and that TDC on the damper and timing tabs correct!

blue hazy light, under the hood?

Grumpy

The Grumpy Grease Monkey mechanical engineer.