need a little help again
 

hey guys. well again im having a problem with a boat. its a 86 sea ray 140 2.5.. i can run the boat out of water with the ears on all day and not have a problem. when i put in the water it wont run. it sounds like its not getting any gas. checked the fule pump thats good. plugs are new and gaped correct. new points all the usual has been doen this yr. it has a new prop on it. is there anything i can check or any suggestions?
thanks.

oh yeah it also has new gimbles.

There is usually a anti-syphon valve at the tank where the fuel line hooks up. It looks just like a brass fitting. Sometimes these get clogged/stuck and don't less fuel out properly. Remove it and try again.

Also, ethanol is terrible gas. If the gas is more than a month or so old I would suspect bad gas as well.

I would agree with Blue thunder _ just had to pump out 500 gal of older fuel from my big boat and replace now it runs fine. I spent 1500 bucks trying to use that fuel.
The ethanol strips any varnish from pre ethanol fuel in the fuel lines and tank and makes a gooey tar like substance that slips though or clogs most fuel filters

if thats the case why can i run it out of the water with no problems? not trying to be a pain.

ok its all fixed. it needed a new disturber. i drained the all the gas just incase. went threw the carb. just kinda went threw the whole boat my self. my next question is about a prop. it has a 14X19 on it now. i talked to a tech he said not to change it. im looking for a little more top end speed. he said it is what it is. is this true?

What is the max WOT rpm rating for your engine and what wot RPM are you attaining? Good to hear you got the engine gremlin fixed :drink:

wot im at 3500-3700. i think the motor should top out at 4100-4400 i think. its a 140hp 3.0. i was also thinking of getting s hydofoil. what ya think?

No on the hydro foil.

Try a 17p prop of the same style you run now. You will pick up 200rpm per inch of pitch so this would move you into your necessary WOT rpm range.

so you that would be a 14X17?? if so thats what im going to start with. thanks for all the info. any suggestions on what prop to get?