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Gary, ASE Certified Technician
Category: Car
Satisfied Customers: 1009
Experience:  Senior Technician
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Mate, I have a 1997 vs commodore ecotec v6. I have changed

Customer Question

Hey mate, I have a 1997 vs commodore ecotec v6. I have changed all filters plugs leads cleaned tb. Also replaced cat back exhaust running 2.5" as old one was stuffed I noticed it had lost a bit so I checked at night while revving can my leads only small part r glowing n small arking. What do u thing the los of power is? Leads? And ilding a lil rough not to bad tho... Thanks. Josh.
Submitted: 1 year ago.
Category: Car
Expert:  Gary replied 1 year ago.

Hi Josh,

VS V6 is known for spark plug leads crossfiring etc.

You have said you have replaced the leads, how old are they now?

Did you fit the correct spark plugs, and not crack any?


Customer: replied 1 year ago.
Less than a week ago yes there the rite ones no cracks. Cheers
Customer: replied 1 year ago.
what's Ur other idears? Or is that it?
Expert:  Gary replied 1 year ago.

Hi Josh,

Was it misfiring prior to changing the leads and plugs?

You probably have a faulty coil, there are 3 separate coils.


Expert:  Gary replied 1 year ago.

Hi Josh,

Did you find a faulty coil?

Two cylinders would be misfiring with one coil out.

Very common failure.