Re: Looking at a 4.3 merc ? scan for hours . . .
Actually, there is one scan tool that will read hours off the Thunderbolt V ignition system, even on carbed engines without an ECM.
IF, you can find someone with the
Rinda scan tool and they have the $50 harness adapter to read the hours, then it is possible. I have the scan tool, but not the adapter. Could not justify a $50 adapter and the only thing you can read is the engine hours on a module. If the module was ever changed, all the previous hours were lost.