Engine starts and stalls

[Hemi2020]

I have a 82 mercruiser 470 engine it starts with key as soon as I release the key it stalls , I cannot find a ballast resistor anywhere on the boat to check , I tested the points with key in on position no spark , but it will start when using the key but stalls immediately, any help would be greatly appreciated

 

[Scott Danforth]

the ballast wire is in the harness. you have two feeds to the coil, one from the ballast wire, one from the I/R terminal on the starter.

first, verify that you have battery voltage to the coil during cranking, and about 9-10 volts with just the key on

second make sure your points have been serviced.

 

[Hemi2020]

Thank you I will check for voltage at the coil , the points are new , I know sometimes you can buy new parts that are bad so I will double check them .

 

[Scott Danforth]

regarding the points, you need to file points....new or used.

 

[Hemi2020]

Ok thank you.

 

[Hemi2020]

Thank you so much the ballast wire was broke in the harness fixed started right up runs great, thanks again