Have Boat Questions? Ask a Boat Repair Expert.
Hello my name is ***** ***** am I speaking with? I read what you wrote. The shift interrupt switch actually does different things and it depends on which specific ignition system you have on the engine. Do you know which ignition system you have? If not, do you have the serial number on the engine so I can ID the motor.
Hi Ken. Is it a Thunderbolt system?
That would be an automotive distributor, not a marine one. Any idea why it has an automotive distributor on it?
Honestly I don't know. I would never use an automotive distributor in a boat, it is illegal to do so. Whenever I come across engines that do have them installed in the boat I tell customers that they are illegal, and I will not work on the unless unless either I or the customer changes that distributor to a correct marine distributor.
Yes. I'm on the phone with another customer at the moment but I will be back as shortly as I can.
Okay I am back. Electrical components on a marine engine, such as the starter, alternator, distributor ect all have to be what is called "ignition protected". Ignition protected means that if there was a fume build up in the boat that these components could not possibly cause a spark and ignite those fumes. If you get caught running an automotive distributor in a boat during a safety inspection you would be given a hefty fine as well as a tow back to port, as the Coast guard will not let the engine be run with that distributor in it. If you were to ever have an accident/fire/explosion, and the insurance company finds out you have an automotive distributor, they would cancel your insurance policy. Does that all make sense.