I have a ls6 in a jet boat with an edelbrock carb conversion kit. I was out running it and it started popping almost like a miss. Then it just cut out. I had to tow it in. Once on the trailer it fired again twice and now won't fire at all. I checked the power to the msd box and it's got power. It's got power to the coils but no spark from the plugs. I'm stuck. Any help guys? Thanks.

 

check over the sensor plugs, and sensors themselfs... if your timing is off, could have a bad crank angle position sensor?? Just a guess.. but with power to all the points, and none at the plugs, that would be something I would check..

Good luck!

 

I checked the power to the crank position sensor and it's got power. Is there a way to check the sensor it's self? I thought is was the cps.

 

I dont know of any type of check for the sensor, rather than Remove/replace, and see if it fixes it, if it dont, autozone will take it back, with a reciept

 

It was the cps. Replaced it this morn and she was purring all day. I think the miss was a burnt plug wire too. Thanks on the quick reply buddy.

 

Glad to help.