Outboard now starts and dies...

[Denek]

My float chamber leaked after cleaning and I found the float chamber O ring was not seated properly, fine now

 

[Dabhand]

2003 Mariner 3.3...

starting problems appear to be solved. I did my own service inc new plug.

Starts first pull, which was a surprise.

But no longer runs for more than a few seconds or gets much over half throttle before dyeing. Run time is variable.

Suspect the float/needle and have disassembled the carb. Checks the fuel runs from the pipe - small but appreciable flow, would empty the tank in 10 mins or so.

Any clues on a post card (or reply to this thread)?

Thanks.

I had this on my 4hp Mercury - checked the carb and it was clean, the spark plug was quite old so I replaced it and cured the problem instantly.

 

[Spirit (of Glenans)]

On my Tohatsu 3.5 (same engine - Different badge) there is a filter between the tank and the fuel tap (it is very small). I find that it needs cleaning at the begining of each season. Empty the tank and disconnect the valve and you will find the filter although it might be awkward to remove. You can just see the filter in the tank from the filler cap but you will need light outside the tank to see it.

Don't use a match!?

 

[Slowboat35]

My Mariner did this repeatedly after multiple attempts to clear it. Every time it was a speck of crud in the main jet.
The crud was coming from the black plastic/rubber fuel manifold between tank and carb. The crud appeared to be 'growing' inside it. I tried cleaning the thing several times but the crud kept reappeariing. Solution was a new bit of black plastic and a small inline filter .

Job jobbed.