Okay guys I have a problem. My yota normally does well on gas mileage. Around 20 mpg. Now, I bought a bass boat last summer decided to pull it with my yota. It has a 22re 95 model. Noticed a change after the summer of fun. Mpg dropped to about 17 with normal driving. It smokes on start up, cuts out a little at idle after it worms up. Doesn't use oil, water level is normal. Please give me a list of what to try or replace to get mpg back to normal.