No Power on load for outboard

[Carl]

I just did the service on my 89' Honda 8hp outboard and after putting it back on the boat, it has no power or thrust after half way up the power band. It seems like it it not getting either air or fuel. It sounds bouged down. I took the prop of and it revs all the way up without it. So it can get fuel and air. I didn't adjust any timing or carborator adjustments. I did have some gunk in the bowl of the carborator, clean and reinstalled. I had some cracked fuel lines so replaced them. I don't know what's wrong any clues? All the outboard shops are six to nine weeks out to have someone look at it. I will put new plugs in this weekend. I can only motor 2 knots right now take awhile to get around. :-(

 

[Robert Avent]

Did you use new fuel?

Old fuel sometimes causes problems like this. Check the rubber in the prop (if you have another prop, see if that makes a difference). Take the fuel line off and turn it over a few times to check for adequate fuel flow. The fuel pump diaphram may have hardened up or have a hole in it. Check your fuel filter too. Also, make sure the plugs are tight.

 

[Carl]

New fuel and strainer

I emptied the fuel tank and put new fuel in 87 0ctane it ran fine with it before. All the fuel lines have been replaced with the strainer. Checking the shop manual there seems to be a strainer in the fuel pump has anyone changed that one? I have only one prop. I checked the prop per my harbor master to make sure it was not out of round or off center. So I setup a jig to check the end of each blade and pitch and they are fine. I was going to try a new set of plugs this weekend. Other than that I don't know what else to do. :-(

 

[Paul Akers]

Check Lower Unit Oil

The oil is quite heavy. If you haven't changed it in a while, it may have thickened up and the prop gets inhibited.

 

[Jeff Peltier]

If you get a surge of Power

when temporarily applying chock or primper, the main jet is most likely, partly gummed up. In that case, removing the jet and cleaning with a tip cleaner would solve the problem. Look for gum or other residue in the bowl, while you have it off.

 

[Rick Webb]

Similar Problem on My 6HP Merc

Your problem sounds similar to mine. The carb has three jets and it depends on the the throttle setting which one is being used. One of three things took care of mine.1. The float was half filled with fuel, I replaced it2. Cleaned out the carb, the guy at the dealer where I bought the gasket set said the automotive spray stuff was too hard on the plastic stuff in some of the carbs check with your dealer on yours3. The diaphram on the choke was brittle and leakingNot sure which one did it but it works fine now. The float was $5.00 the gasket set $40.00

 

[crazy dave]

outboards

In over 25 years, the general cure for an outboard whether it is gas/oil mix or straight gas is new plugs and fuel every year and cleaning of any filters and carb. Most complaints happen as a result of the carburetor clogging from gumming up from gas. CLeaning the fuel bowl only does not cut the mustard. First, take the carb off. Have 2 plus 2 carb cleaner with the straw for the snout. You will need to remove every screw and blow the cleaner up every hole. Blow it out with air pressure or simply put your mouth to work like I do which works well. I have a big fat old mouth. Ha! You are basically removng any gum deposits in the very small jets. Put back together and use fresh gas. You do not need to adjust anything maybe the idle once back on. That usually does the trick. Has every time when I am out on the road.