95 Maxum 1800SR 4.3 hesitating bad at half throttle to full throttle after warmed up

[ed & inge]

Originally Posted by racer2c

My sister had a similar problem with her 4.3ltr...turned out to be water in the tank and separator. I knew a guy with a '63 Vette that would stall at stop lights due to vapor lock in the middle of summer but the engine was idling.

correct, but we already told that could be the problem, but it is'nt......

[ed & inge]

soldier......

what you can do is try to lead the fuel hose from the pump an other route to the carbs............but to me it sounds like a fairy- tale.........but it's worth trying, you never know....

greatz, ed

[ussoldier_1984]

It does seem far fetched that it is vaper locking but I have tried almost everything. It kinda does have the symptoms of it though so what the heck I'm desperate at this point I'll try anything to fix it

[ussoldier_1984]

Originally Posted by racer2c

My sister had a similar problem with her 4.3ltr...turned out to be water in the tank and separator. I knew a guy with a '63 Vette that would stall at stop lights due to vapor lock in the middle of summer but the engine was idling.

I have complely drained the fuel tank and wiped it out so I know its not water in fuel thanks for the input

[racer2c]

But did you replace the separator? Glanced back through the thread and I don't see that mentioned.

[ussoldier_1984]

yes replaced the fuel water separator turns out it was a bad battery sucking all the power from the coil replaced the battery and she ran great now I lost spark grrrrrrrrrrrrr

[ed & inge]

oke.......new problem...........????????

greatz, ed

[ussoldier_1984]

Yes new problem but already have that taken care of, I have spark from the coil just not going to the plugs so ordered a new cap rotor the little sensor inside the distributer and wires from amarket.com for 35 bucks should be up and running in next weekend. so since the original problem, the boat now has a complete new fuel system and ignition system. lets hope everything goes good when i get my parts in!! I would like to use the boat before the season ends without having an issue lol. Thanks everyone for the help!!!!! I will keep you updated on how she runs soon as I get the new parts in.