Bogging down at higher speed
 

150 1988 Mercury outboard, I was going out Sunday and my boat ran great for about five minutes than at higher RPMs it bogged down, I fuel up at a gas station that closed up after I fueled up, but might have sucked up crap , maybe, so I changed the water seperator and no water that I could see than I changed the inline fuel filter there was black stuff in it but not to much but not a little too, on the in line fuel filter one end is flared out, does that flared end facing the bottom of the motor or does it point toward the top? Thanks

When it bogs, what is the primer bulb doing?

I don't know, I did not look at it , next time I go out I will, if it sucks in what does that mean, if it's normal than what does that mean?

Ball should be full and firm. Just trying to get an idea fuel is getting to motor. I could usually tell when my fuel pump was getting weak when motor would die while trolling. Does it do it every time or hit or miss.

Inline filters normally have an arrow on them pointing in the direction of the fuel flow. Black crap sounds like Ethanol eating your fuel lines and gumming up your carb jets. :head:

Destroyer, don't you just love this ethanol gas,,,, hell no , I have a question, if the fuel filter is backwards would it still work? And the last time I changed the inline fuel filter was years ago I don't even remember but it's new now ,both filters are new now at idle revved up she still sounds good I have to take her out to see if that was the problem

Short answer.. Yes, since the gas MUST pass thru the filter material it will still work if you put it in backwards. (As long as you leave it in that position for it's life you will have no problems. The problem comes when you remove it to replace a fuel line or work on the engine or whatever. Then, if you put it back reversed from where it was, any crap that it caught will now be forced out by the fuel running thru it and make a bee line straight for your carbs. Hence the reason for the guide arrow so you always have it placed in the same direction..

PS.. and speaking of Ethanol in gasoline. The Gas companies and the Ethanol lobby are trying to force E15 on us now in a big way. It's important that everyone do three things.
One, check the pump where you fill up and make sure the sticker on the pump says E10. If you put E15 in your tank you void your warranty.
Two Write your congressman and tell them you don't want E15, that' it's not needed and they should stop it.
Three. Tell your Congressman and senators that you don't want Ethanol in your gas at all. There is a much better substitute (isobutanol) that has all of Ethanol's pro's with none of it's cons. It doesn't attract water, it doesn't cause gas to separate and it doesn't eat rubber items/ Oh, and it costs less to make, less to transport and has a higher energy rating than Ethanol.

For more information go here: https://www.boatingmag.com/replacement-ethanol

Destroyer that's interesting but you and me know that it all comes own to money, the politicians only care about how they can get elected, and deal making and money, there should be reg, gas with no ethanol available to use, it's all about money that stuff caused so much damage I'm sure you know that, I will contact my congressman and tell him about the problem with the gas . We will see what happens , I just hope my boat runs good next time out

Is non-ethanol an option in NJ?

2 weeks ago i filled it with 90 octane non- ethanol (80 cents more a gallon). Pulled the whaler on a 180 mile trip. Got 17 mpg. Filled up with 87 octane E10, did the same trip with boat next weekend, got 12 mpg.

Little known fact when you buy a car or truck its mpg is estimated on pure non ethanol gas, so the mpg you see you will never actually achieve unless you run non ethanol fuel.