175hp Mercury slow to take throttle

[john1234]

I have a175hp Mercury 1985. When I trying to pull a skier out of the water I give full throttle but the engine hesitates for a few seconds ten picks up the power and goes ok.

 

[ZmOz]

Re: 175hp Mercury slow to take throttle

As allways, I'll have to suggest a good dousing with Seafoam. Put the seafoam in the gas tank, and then while the motor is idling spray the aerosol version (deep creep) through the carbs.

 

[mellowyellow]

Re: 175hp Mercury slow to take throttle

does it take off fine without skiier? (prop)<br />same without? (flooding maybe, check float)<br />good luck,<br />M.Y.

 

[john1234]

Re: 175hp Mercury slow to take throttle

Mainly with skier, but does similar without skier, just the lag is a little less drag

 

[mellowyellow]

Re: 175hp Mercury slow to take throttle

may want to check the needle and seat that control<br />the float level in the fill bowl. could be some<br />crud in there. if you have not done a carb rebuild<br />in a long time, is a good idea to get done. faulty<br />carb can cause a lean condition and burn a piston<br />pretty quickly.<br />I had 2 props for my outboard, one for speed and <br />one with better bite for skiing/tubing.<br />good luck,<br />M.Y.

 

[john1234]

Re: 175hp Mercury slow to take throttle

thank you for all your replies

 

[sinkingfast]

Re: 175hp Mercury slow to take throttle

just a thought......<br />has your carbs got limiting caps on the idle mixture screws? little white plastic caps with a portion raised???<br />have you caught one with your cleaning.......<br />one at a time......<br />take off the plastic cap.....<br />turn screw clockwise until it seats...GENTLY!!!!!<br />and count number of turns in.<br />Now turn each out the same amount to reset each screw.<br />Put limiting cap back on each in the position it was..........<br />now do some thinking.......<br />they should be all the same approximately say 1 to 1.5 turns out.......as a rough guide.<br />If they are all over the place between 1 to 3 then thats your problem.... start at all set to 1.25 and work out from there. you sound too lean..... turning outwards makes it richer.<br />start with the simple things then get complicated

 

[john1234]

Re: 175hp Mercury slow to take throttle

ZmOz , this may sound silly but when I went into my local boat shop and asked for Seafoam they said they had never heard of it. Please can you advise if there is a brand name or an alternative?

 

[Josh Knapp]

Re: 175hp Mercury slow to take throttle

go to your local auto parts store. most of the time they have SeaFoam or they can get it. I can go to any of the 3 in my small town and can get it at any of them.