25 hp Mariner hard to start

[spekltrout2002]

have a 1983 25 hp Mariner, (Japanese made) I just had the carburator<br />re-built as it would not idle at low speed and is extremely hard to start.<br />Even after having the carb rebuilt it is still hard to start and at high<br />speed and now at low speed it wants to cut out on me. at the low speed it<br />seems that it is not getting the proper amounty of fire. Could it be the<br />coil? I bought this boat and motor used so I do not know a lot about it.

 

[Reel Appeal]

Re: 25 hp Mariner hard to start

spekltrout,<br /> Remove the sparkplugs and tell us what they look like....Also,check the fuel filter for blockage,etc.

 

[spekltrout2002]

Re: 25 hp Mariner hard to start

I checked the plugs,they are new but it appears that there may be some (slight) moisture on the bottom plug, i also checked the fuel filter, it is clean, in looking at the engine block behind the fuel filter area it appears to be some mositure there too, but i am not sure that it is water.

 

[John H1]

Re: 25 hp Mariner hard to start

1. FUEL--Try a new fuel line, and when you’re running it at ¼ - ½ throttle and it tries to cut out try squirting some premix into the carb, NOT A WHOLE LOT, see if it picks up. Use an oil type can pump type. 2> SPARK---- Pull plugs wire-INSULATE YOURSELF WELL ( one at a time) short between plug connector in wire and spark plugs head (screwdriver) about 3/8” gap, as running watch spark jump, should be constant and forceful at idle…. Two things in order to have combustion….John