Testing Spark Underway

[tlynch]

I have an intermitant problem - my engine sometimes loses power while running. It only happens when the boat is in gear and it only happens every 5 minutes or so. I want to see if there is a spark on all cylinders when it happens as I want to know if it is electrical or a problem with the fuel system. How can I set something up so that while underway I can keep check on wether or not I am getting a spark?<br /><br />I have found this Spark Checker , Can I attach this and run my engine at the same time?<br /><br />Thanks,<br />Todd Lynch

 

[clanton]

Re: Testing Spark Underway

Timing light, 2 people one to operate boat, one to watch timing light, when it misfires the light will blink. Method 2 peak reading meter with harness from Rapair that connects to all of the coils , switch from cylinder to cylinder, all cylinders should read same.

 

[Backlash]

Re: Testing Spark Underway

Hey Todd,<br />No, that spark checker is designed to check the spark going TO the spark plugs. Your spark plugs get no spark with it hooked up. Clanton is right on the money. <br /> <br />Backlash