Promoting music!
Ballard didn't build anything; he's always used submersibles provided by the U.S. Navy.
you need to build the "saloon"
Carbon build up. Clean the throttle body with a good carb cleaner.
You go to the busy bee saloon.
I suppose it is possible but I suspect you have carbon build-up in the throttle body. A good cleaning with a throttle body cleaner should clear that sticky throttle up.
Carbon build up in the throttle body.
No he had people to build it.
BELIEVE IT OR NOT, but you don't. the throttle body interior, and throttle plate, is coated with a material to prevent sludge build up. Cleaning it may cause engine performance to decrease.
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To use ninjas, you can either hire them from your home city with a card or buy them at a saloon that you can build during the game. Not all the time will your saloon give you the option of hiring ninjas. It will most likely give you a different selection of mercenaries each time.
check the throttle body for carbon build up probably fuel related