MSD Blaster 2 coil testing

Resistance on coil is 0.9 and 4.2k, MSD spec says should be 0.7 and 4.5k, does this mean the coil is defective.

Thanks for helping.

 

Sounds like typical ohm values,if in doubt,try another ohm meter.

 

Thanks, appreciated.

 

Did you zero your meter first?

 

What is the 4.2K? The resistance on a coil is typically .9 ohms, where do you measure for the 4.2K, is that the high tension side?

 

Yip, thats the hi tension side.

Put the coil back in and engine fired up first time!

Might be an intermittent fault with the coil?

 

Roadrunner is on top of it. All guages are most accurate in the center, so you want to pick a ohm range that sticks the needle in the middle. To read 1 ohm is probably not going to happen with what most people have in their tool box.

You can put a large resistor in series though. Measure (say) a 1k resistor by itself, and then in series with the coil terminal.

I'd say the values are within tolerance.