Confirmed success! Ran the engine for about 2 hours and not a single hiccup! OEM sensor functioning perfectly, I only replaced the sensor, I see no reason to replace a working coil.
Thank all for your tips and help!
Brief update, in anticipation of the OEM sensor arriving today, I removed the distributor cap & old ignition sensor. Ignition sensor is relatively new, entire thing is encased in epoxy like the new OEM one. It is, however, the sierra aftermarket part so I guess it's a good thing I took the...
Okay great.
Yeah, in general I trust sierra parts but I'm having second thoughts on that one. I'm going to order the OEM sensor, it's a pain to access this part of my motor and I don't want to think about it
Success! (I hope)
First off, I cleaned up the ground contacts @ the engine and the voltage drop between the battery switch and battery went away. Still have a 0.3v drop between helm and engine but I don't think that's impacting anything.
Got engine running and after about 10 minutes it shut...
I only had a little time to stop by the boat today, I prioritized cleaning contacts to the starter battery and coil as well as checking over contacts to the engine for obvious corrosion. Only one post at the starter slave solenoid looked corroded, everything else looked good. I do believe there...
Thanks for the tips! Out of curiosity, is there any problem with just swapping the gray signal wires from the engines to the tachs at the helm? My thought is swap tachs and see if the other engine starts acting up. I'll also investigate how my synchro is wired in. Either way I'll have tools with...
One more thing to add, I have an old synchronizer unit, it seems to work mostly correctly, it's solid green when synced, red lights for port/starboard too low. Would that complicate the wiring at all/something else to inspect?
I believe it is thunderbolt IV, I'll have to snap a picture of it to confirm. It is a newer module design than my last boat, much slimmer and more V shape.
Hoping it doesn't come to that, I'm going to check for voltage loss and sand all connections next time I'm at the boat. I also ordered a...
I'm not sure either, it's connected to the raw water side so idk if someone put it in to aid with winterization. Doesn't make too much sense, the other engine has it too, it's on my list of things to take care of, I hadn't even thought about it rubbing against the wires on the coil though. I...
Went to the boat this morning and took the attached pictures. The pickup sensor in the distributor was replaced at some point, it has a ground wire attached to a bolt on the engine so it has a good ground. The other two wires have the slices you see. The coil I think may be original based on the...
Hi all, I've got a new to me last year Carver Mariner 3297 with dual inboard v drive engines. Starboard engine is the one acting up, serial number 0B956094. Some background on the engine, last summer it ran great though the last time we had it on the water it experienced roughly the same problem...
