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2003 Mercury 25 Idle Problems

tmkilburn

New member
Been trying to get this thing running for a while. It will only idle if I hold down the blue primer button on the carb. As soon as I let up on it it dies after about 5 seconds. I'll outline what I've done so far below.

-checked spark/changed plugs
-changed gas tank
-changed fuel lines
-bypassed original fuel filter and put an in-line
-rebuilt and replaced all carb gaskets
-checked compression 115 on both cylinders
-changed gas

Any help would be much appreciated.
 
UPDATE:
Went ahead and took the carb apart again and found a little gunk in the low speed jet. Ran a piece of broom plastic down it and cleared it out good. Sprayed everything good with cleaner and re-installed the carb. BOAT STARTS UP AND IDLES PERFECT.
 
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