alright so i took the boat out to the lake today for a tourney then all of a sudden as the day went on it started taking forever to get up on plane it was more like plowing the water forever....its got a merc 200 efi on a 21ft and has a 21p prop this is def not its normal behavior got any suggestions?? i replaced the spark plugs and am gonna take it out tommorrow is there anything else that it could be?

does it idle alright? stall or die?

no it idles ok sometimes every now and again it takes a min to start...

Ethanol resistant lines? Fuel Filter..this ethanol is nasty stuff

how many rpm's are getting up to from takeoff to on plane?

Hotfoot? I had a brand new boat and was fishing a tourney and it would not get on plane. Ended up idleing all day and idled back to the weigh in. After the weigh in for some reason I looked down at the Hotfoot and realized the bolt that held the cable to the side of the Hotfoot was loose not alowing it to give the motor full throttle when the pedal was fully depressed (the outer sheath was slipping). I tightened up the bolt and walah!!!

manual fuel pump maybe

I haven't paid attention to RPMs... I have the same motor but shorter boat...

Mine got on plane better before sea foam... I need to replace the plugs and fuel filter and I should be good to go...

Did you run anything different in the fuel?

Call that guy of craigs list here in town a few people I know use him.

power pack went bad on mine couldnt get on plane

Water in the hull?

havent been able to get the new spark plugs yet.......i had some water in the hul from washing the boat but i pumped it out and it still wanted to just plow the water....as far as fuel additives i ran a lil stabil through it but very small amount....the hot foot is good to go once on plane she runs fine and gets wot.....

sprint, sounds like you had the same problem I had. I changed spark plugs, and that didn't work. checked the linkage on carbs to make sure all open up, that was good. took to mechanic, ended up changing the switchbox (powerpack) that wasn't it.finally looked at spark plug wires, and had cracks in it, also had a bad coil. I have a merc 80jet (115hp powerhead)

Save time and money change spark plugs and inspect wires closely. I had to bend the wires to see the cracks.

cool man i appreciate it for sure. couldnt get the new plugs today cause the dealer was closed go figure that but it is memorial day so yeah pretty much plus my tranny sensor in my truck went out this weekend took it to dodge and they said its gonna be about 900 bucks!!! for 3hrs of work talk about a rip off!!! oh and my idenity was stolen by someone in alabama last week hahaha things def could not get any worse hopefully lolol