carphunter
Member
was hooking up a tach i've used in the past to check my rpm vs my prop. checking to see if i had an over rev limp mode issue last time i had the boat out, or if it's something else
I have a tach i rigged a pigtail for long ago to the ignition switch box... so when i want to test, i just plug it in to the pigtail.
when i did my test... tach wouldn't leave 0. checked with manufacturer... and they said i should see at least 3.5 ac across the grnd to send posts. i get like .59 v ac. (ign to ground post gives me the correct 12+ v dc)
went to the rectifier and tested from ground to both yellow posts. one is giving about .59v ac... the other about 29 v ac.
the engine starts fine, and when i rev it and check at the battery, the voltage comes up at the battery... so i think it's charging.
mechanic's not local... but he gave me some time on the phone. he indicated the mismatch of the power on the two yellow leads would seem to say the stator has got a problem.... but from my youtube watching, etc... i'd think i should either have a starting or a charging problem.
i considered swapping my grey tach sender wire to the higher voltage yellow post.. but he said that he'd guess that would smoke the tach.
i was considering pulling the yellow stator leads off the rectifier, running the engine, and seeing if my values remain the same for voltage... but i want to confirm that's safe to do (and now thinking about it... while i wouldn't worry about not charging the batteyr... wondering if it doesn't kill the ignition circuit)
ah. fun old boats..
I have a tach i rigged a pigtail for long ago to the ignition switch box... so when i want to test, i just plug it in to the pigtail.
when i did my test... tach wouldn't leave 0. checked with manufacturer... and they said i should see at least 3.5 ac across the grnd to send posts. i get like .59 v ac. (ign to ground post gives me the correct 12+ v dc)
went to the rectifier and tested from ground to both yellow posts. one is giving about .59v ac... the other about 29 v ac.
the engine starts fine, and when i rev it and check at the battery, the voltage comes up at the battery... so i think it's charging.
mechanic's not local... but he gave me some time on the phone. he indicated the mismatch of the power on the two yellow leads would seem to say the stator has got a problem.... but from my youtube watching, etc... i'd think i should either have a starting or a charging problem.
i considered swapping my grey tach sender wire to the higher voltage yellow post.. but he said that he'd guess that would smoke the tach.
i was considering pulling the yellow stator leads off the rectifier, running the engine, and seeing if my values remain the same for voltage... but i want to confirm that's safe to do (and now thinking about it... while i wouldn't worry about not charging the batteyr... wondering if it doesn't kill the ignition circuit)
ah. fun old boats..