thunderbolt

Dear Forum, I am Bob quite new here and living in Germany. I am joining this forum since V8 boats & experts are hard to find here. After rebuilding my motor I was running my boat for a season without a proplem. Now it gives me some issues. It is stops running like somebody turns off the...

I just removed this system and replaced. Because of the lack of bench test for the system, I mis diagnosed a problem that ended up being valve related (don't care to discuss that :>( any further). Anyway system works as intended. Prices are all over on ebay, so not sure of its value. Make me a...

Tried to start my starboard engine (inboard Mercruiser 454, 7.4L, Thunderbolt)couple of weekends ago and couldn't get it to fire. Seemed like the starter was giving it juice, but couldn't get anything but a few little "pops" out her. I replaced all the plugs today, and nothing changed. Does...