substituting a v6 stator for a v4 engine

[ct1762@gmail.com]

no 170v is plenty. ususally one or two cylinders is off by 20-30v.check the condition of the primary terminal metal on the end. might have some corrosion. i'd be suspicious of the sensor coil next. did you test resistance of the orange wires from the pack? they should all be relatively even... 85-150 ohms depending on the meter. disconnet the rectifier yellow wires and see if it clears. if it does, replace rectifier. if it was bad, just another reason to check the sensor coil. might have fried the old stator, too. any burning/bubbling on the old one?

 

[ct1762@gmail.com]

That site has nothing of use to me.

The v6 stator is putting 240V to the power pack

Coils 1,2, and 3 are getting 190v on their primary side wires. Coil 4 was only getting 170v at cranking speed. This sounds like power pack problems right ? The lower output corresponds to the plug that's cleaner which means the misfire is there.

when you say "stator" is putting out 240v, i assume you mean charge coils right?

 

[Chevyls6]

no 170v is plenty. ususally one or two cylinders is off by 20-30v.check the condition of the primary terminal metal on the end. might have some corrosion. i'd be suspicious of the sensor coil next. did you test resistance of the orange wires from the pack? they should all be relatively even... 85-150 ohms depending on the meter. disconnet the rectifier yellow wires and see if it clears. if it does, replace rectifier. if it was bad, just another reason to check the sensor coil. might have fried the old stator, too. any burning/bubbling on the old one?

The orange coil connections are nice and clean. Resistance from the orange wires to ground with the wires taken off was 0 ohms. Secondary side of each coil was just under 300 ohms. Are you talking about the resistance with the coils still connected ?

The rectifier is new and I tested it with the diode setting on my meter before putting it in. The old rectifier also tested ok but it was cheap so I threw a new one on there for reliability.

The original stator had high internal resistance but no visible signs of overheating on the insulation. It read around 800 ohms from brown to brown/yellow power pack charge wires.

What's the best way to test the sensor coils? They read 1.2-1.5v cranking and 8 ohms resistance. I even checked with a mega ohmmeter to see if the insulation was weak but both of them tested good.

 

[Chevyls6]

when you say "stator" is putting out 240v, i assume you mean charge coils right?

Yes the charge coils that go to the power pack. Battery charge voltage is around 12.9v with the engine on high idle.

 

[Chevyls6]

Success!!!!!

I installed a new cdi power pack today and that fixed it.

Hits 4700rpm like it's supposed to and runs quite a bit better.