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I checked the ohms on my spark plugs. All 8 of them. No continuity from the threads that go in the block to the top of the spark plug that goes in the spark plug wire boot. But for the test from the top of the spark plug through to the sparking tip, I got all .12, except for one spark plug I got...

I'm still reading lots of threads learning and learning. I've seen a few threads where someone tells them to test the compression again. So this time I rented a compress tester from Napa. I got: 126, 134, 126, 128. I also moved the spark tester out from 7/16 to 1/2 inch and the spark jumps it...

See now... That's a quality. Consider good motives.

It's discouraging that I can find several threads where someone asks about an issue similar to mine, the same members lending help, and the person with the issue just disappears. 😕

Yeah, I'm pushing to make it to a trip in August we've planned for a year now.

Monday, no matter if I haven't gotten this resolved, I'm taking it for a spin.

I ordered a shop manual from eBay today. I still think it's air/fuel related, but I'm just going to go through everything from spark to stator. I figure if I'm at 120 compression, good lower unit, and as clean as this motor is.... Might as well.

They all look like they are firing the same. None looks more discolored or less discolored than the next.

Here are the old plugs that I ran some after the seafoam. And the new current plugs for maybe the last four times I ran the motor.

It's on the Pacific Coast. It's a Northern part of the continent. And it's about as West on this continent as you can get. Yes, that's the PNW. 😊

I know this is an old thread, but a thread like this shouldn't close, should it? . My 1967 18 foot Holiday had a 1984 Suzuki DT75 (2-stroke) 260# outboard, and it planed easily and maxed out about 33 mph with three 200# guys. With it and my 2010 Yamaha 9.9 4-stroke the drain holes at the bottom...

I had it in a 55 gallon drum cut in half one of the runs. I'll use a drum this coming next time. I'll see how it sounds with my latest cleaning and post the video here. Probably Thursday afternoon/evening PST.

Hey! were COX Cars and Planes 2-Stroke? I loved the smell of their exhaust. 😊

I do appreciate all the help. I got myself through upgrading my 65 Chevy to power steering, power disc brakes and an Automatic Transmission with the help of a classic truck forum. . When I was younger, with my motorcycles and vehicles, I always had my uncle, my grandpa, and my dad to help me...

Thanks, Yes, I had a Yamaha 80 when I was 8. Then a Suzuki RM80 until 1979, then a Husqvarna 250.

I found a video I made earlier soon after the seafoam. You can hear the sputtering throughout the video.

. Yeah, my 1984 Suzuki DT 75 was a 2-stroke. And my 1984 Mercury 7.5. And this new to me motor ran how I expected it when I went to look at it and when I got it home. It's definitely not running right since the seafoam. . Let's hope this last cleaning of the carburetors does it. Either way, I'm...

I've got a DVA on order so I can verify all ignition parts. I just want to rule all out. I'll be doing another compression test tomorrow. I'm kind of approaching this like a service checkup. Just checking everything. May not be needed, but I'm also ordering new spark plug wires.

I only replaced them a few days ago. I wanted to make sure all 'carbon' went on the old plugs. But yes, I'll check them again and upload a picture here tomorrow.