do you guys think this is bad gas?

[2-bowties&abird]

i bought my boat a few weeks ago and when i bought it it had 3/4 of a tank of gas. before i took it out i topped it off with 93 in fear of it having old gas and it was running pretty good and have been doing so untill last weekend when i did not get a chance to get to the store to top it off again. so i get it in the water and it was running really rough and smoking, i run the rpm's up a little and it cleared right up so i'm thinking damn must not have ran all that old gas out yet. so i'm cruising out of the cove i put in at and when i go to give it throttle she dies on me and shuts down. i played hell for about five minutes trying to get it started and it finally starts doing the same thing running rough and smoking a little and then clears up so i hit the throttle and ta da jumps right out of the water and ran like a champ for the rest of the day. initially i'm thinking ok bad gas so i get a fuel/water seperater but not realizing that efi motors don't use them. so now i got some quicksilver fuel treatment and i have some wires and plugs on order. do you guys think i have a bad gas issue or do you think it could be a combination of both gas and ignition? sorry such a long post.

 

[NelsonQ]

Re: do you guys think this is bad gas?

I had almost the exact same issue last year when I purchased my boat new. The screen on the inside of the tube of the 6 gallon tank was picking up some debris. I pulled it apart and cleaned it and everything was fine afterwards. It wasn't consistent (just as you've indicated)

You may have as simple a problem as that.

 

[mvn]

Re: do you guys think this is bad gas?

I would agree with NelsonQ. Sounds like a fuel issue. Go for the obvious. Also, not being familiar with Merc's, do you have any fuel filters anywhere? I'd be changing them out.

What type of fuel injection is the engine equipped with? Was the boat fogged before you bought it? You may have just burned up residual fogging oil.

 

[2-bowties&abird]

Re: do you guys think this is bad gas?

thanks for the help guys. it had a half tank in it yesterday so i filled it up with 93 and put some quicksilver fuel treatment in it. seems like the only problem i'm having now is i have to move the throttle slightly forward at start up to get it started. it ran really good yesterday, but it almost seems like the idle is adjusted a little to low.

btw it is throttle body injection.