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Yes. The carb was not the problem, and worked properly. I guess the rebuild of the carb is an added benefit. :)

Yes, at the time, the level was high, but black, not milky. I think it just did not have time to have changed color at the time.

more photos. tomorrow I put some diesel fuel into the crankcase with the oil, and then rotate the engine to get it to circulate and clean a bit, then suck that crap out, and then do it again. Ugh

here are some more photos of the rebuild. I have the heads and intake manifold off. They are being cleaned right now. The gunk has been sucked out of the engine for the most part, and 10-40W has been poured into the crankcase to keep the crankshaft bathed in oil, vice oil and water. It...

Started the rebuild today. Holy crap.

Well, that sucks. Went to try to check the timing today. Found the marks, started turning the engine over. Gave it a few gooses with the throttle, and it felt like it wanted to start and then it vomited think chocolate milk from the oil breather hose on top of the port valve cover. I opened...

I used the timing light to verify spark was leaving the cap on each wire, but did not check the end of each wire, since they are less than 6 months old. The engine was running fine before it just started to cut out at low idle, and now won't start. The plugs in 1, 3, and 5 are new, since I...

That was the last thing that i tried. No joy on the starting fluid, either. Thanks Ed

Thank you for the back up. I made sure to mark the wires, there are tags on the cables, to make sure that they were in the right place.

I left the throttle linkage off, as seen in the video, and tried pumping the throttle several times. No matter how many times I pumped the throttle, it would not start. It sounded like it wanted to many times. The only time that I got it to start was once when I left eh throttle wide open...

Duh! thanks for reminding me of the fact that I have a perfectly running identical engine to check the timing. I totally spaced that. :) I even thought of swapping carbs at one point, but felt it was safer to just rebuild the one, than ruin both. :) I will check the timing on the other one...

Yes, that is what I thought. When I bought the boat, I had an issue starting the stbd engine, and had to empty and refill the fuel filter by turning the engine over several times. That made me think mechanical pump. So I do not think I have a problem in the fuel supply area. The buzzing is...

The buzzing is totally new to me. The bilge fans are on their own circuit, and did not even have them on for the starting, since I have had the covers off for a while trying to work on the engine. Do you (or anyone) know the proper setting for the timing on these engines? I can check the...

It sounds weak, but have two batteries (one brand new) on that side of the boat - have 4 batteries in total on the boat, cross connected through the battery charger, and that is connected to pier power right now. Is the fuel pump electric on these, or mechanical? Not too sure of all the bits...

Oh, yeah, after replacing the carb, verified that it is getting fuel. So it is not an air or gas problem. And with the spark at the distributor cap, which I also replaced, is not a spark problem. Is there some cut out thing? dang video is too large to upload, but have placed a link to it to...

I bought the boat this year, and have had no issues, except until the last trip. 1988 Sea Ray Sundancer, twin 4.3L Mercruiser 6 cylinder engines with thunderbolt ignition. The last trip, the port engine was hard to start, but finally caught, and we got underway. It started to overheat a...