No problem. It just sucks having to go with out a boat for 2 weeks to get them replaced when its a 30 min. job to replace all six. Waiting for merc to send them and the dealer to put you in line is what takes so long. You can find them on the net for bout 130.00 avg.

Take it to a mechanic and spend 100$ and let them tell u.

Hey! He said its in warranty. I will bet its a coil.

Mechanics arnt Magic...... And sounds like some sort of a fuel issue. It could be a sign that your fuel pump is bout to go out.

Dflipper is probably right. He ain't lying about his merc. Just came out shop for same issue and another buddies 09 did the exact same thing.

When a coil drops it will run a little rough at idle and low rpms. I also had a spark plug tip fall off one time. No engine damage.

I had a bad plug wire do this last year. 250 ProXS. Changed all 6 wires and plugs. Warranty.

I thought for sure it was a coil too.

Good Luck.

Oh this is too familiar...08 ProXs 225. I had blown power head for same issues. They tried to put a crate motor on it it wouldn't work. Had coils and ECM problem as well. They wound up putting a new complete power head dressed out on mine this past July. 4 or 5 months of Mercury and dealership going round and round but they finally made it right. Hope yours is a simple issue but I wouldn't count on it.

This could be related to a problem with the electrical system, fuel delivery system or an operational problem. Way too broad to diagnose on an online forum. Take it to a certified mechanic and let them diagnose it. If you don't do the correct diagnostic steps, you're just going to be throwing parts at the problem and likely wasting your time.

an 08 pro XS, I knew it! coil, coil, coil!!!

Don't let them jerk you around. Make sure you find out if "all" the coils fall under the Merc SB.

Could be may different things as everyone has mentioned, but I just got my 08 250 proXS out of shop....same symptoms..ended up being one failel coil and another failing intermintently. Mercury replaced all six under warranty along with all of the spark plugs. Like everyone has said, it is a known problem with 08/09 Mercury Pro XS and they will make good on it if its still under warranty. Push to have all of the coils replaced if it does end up being a coil issue! Good Luck

Didn't read through everything so sorry if this is a repeat. Might be as simple as a loose plug wire. Happened to me once right after I got her out after a shop visit. Sure enough one of the wires was loose. Mercs don't ride well on 5 cylinders.

Thanks for all the info, will be taking it in today, will keep you posted.

Thanks