Questions tagged [boat]

Questions about boats, boat engines, and other relevant (mechanical) questions about watercraft

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11
votes
4answers
2k views

Starting a 2 stroke jet boat after several years

The parents in law gave me a jet boat, it hasn't been started in 5 years. The boat resided in NH on a trailer on their yard for 5 years, so it has seen freezing temperatures frequently. From what I ...
12
votes
1answer
80k views

Does engine oil get old and go bad?

Does engine oil actually go bad from just sitting within an engine that's not getting use? I feel conventional motor oil has been sitting underground for millions of years prior to being extracted and ...
2
votes
2answers
156 views

Vacuum never decreases while leaning out carburetor mixture

I have a Rochester Quadrajet 4MV carburetor that has 2 mixture adjustment pins in the front of the carb. As I understand it, you tune these by continually tightening the mixture screws while watching ...
9
votes
1answer
3k views

What is the yellow precipitate in my outboard's carburetor?

I've got a 2008 Tohatsu 9.8 HP four stroke outboard. My low speed jet keeps getting fouled and on several occasions, I've found yellow almost crystalline "growths" for lack of a better word inside ...
3
votes
3answers
656 views

Replacing a boat's blown CDI fuse

Just rebuilt most of a 2 stroke jet boat. (if you need / want any boat details, see: this thread) Yesterday, she fired right up no problem, today she won't even turn over. After some basic ...