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Starts, runs rough, dies

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SeaDooTim

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Boat sat for a little more than 1 year. Both engines will start fine, runs rough (15 seconds?) then dies. I drained the gas (35+ gallons) and put 10 gallons of fresh gas. Attempted to start each engine a few times, same issue. What else to do I need to check/clean/replace?
 
Seadoobuddy ... no carbs this is a pair of fuel injected 4Tecs.

OP: You may still have some crappy gas in the fuel system. Do you see any check engine lights? If not GOOD, replace the spark plugs and run it 15 seconds at a time to get the old crap gas outta there, if you have Check Engine lights get them read and post back what codes they are. Make sure the boat is in the lake or on the hose when running to keep coolant and exhaust header cooled.

Post back if you need more help if new plugs don't sort it out.
 
Check Engine light is NOT on, thankfully. I have a set of plugs and will try and replace tomorrow and test.
 
Sweet!! (on the lack of check engine lights) Likely just combination of plugs and crap gas.
 
Sorry for not responding sooner. I changed out the spark plugs and all seemed back to normal. The starboard engine light came on so I immediately turned it off. Waited a few minutes and tried again. No lights. I have taken her out 3 times (4-5 hours each time) and running smooth.
 
Jfymania,

You have a totally different animal than Tims 4Tecs, if your running rough could be a combination of:

Plugs, bad gas, dirty carbs, grey tempo fuel lines ...

Best advice is to make your own thread.
 
I did make a thread and then after time and going through the fixes everyone provided help on it died out. Might start a new one up though find i'm gonna replace the battery in the next couple days. Everyone on here has been a big help
 
Post a link or pm me your thread, I had a 98 speedster. I had just about every issue on them you can have LoLz.
 
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