"I recently purchased a 2000 S
"I recently purchased a 2000 Stingray with the 4.3 Mercruiser Alpha 1. I added some fuel cleaner before filling with gas. About 1 hour into my trip (going both slow and fast) the boat started backfiring at both low and high speeds. I would give it full throttle and it would (bog down) backfire, then slowly come up to speed. I then got it up to full speed, running it for about 5 minutes, and the problem went away. Before using the boat yesterday, it sat for about 3 weeks. It was only backfiring in gear, not in neutral. Any help would be great."
"I recently purchased a 2000 Stingray with the 4.3 Mercruiser Alpha 1. I added some fuel cleaner before filling with gas. About 1 hour into my trip (going both slow and fast) the boat started backfiring at both low and high speeds. I would give it full throttle and it would (bog down) backfire, then slowly come up to speed. I then got it up to full speed, running it for about 5 minutes, and the problem went away. Before using the boat yesterday, it sat for about 3 weeks. It was only backfiring in gear, not in neutral. Any help would be great."