'86 Mariner 30EL - Stalling Issue

s-man · #1 July 20th, 2003, 05:05 PM

I have a 1986 Mariner 30EL that keeps stalling when going at trolling/idle speeds. It runs fine if I open it up. I have replaced all fuel lines, pumps, filters, etc. When it does quit it will not start again until I take the engine apart enough to open the bowl. Once I do that it will start fine until it quits again (the bowl gets empty). Again, if I open it up after I physically open the bowl it runs fine. If you think doing a rebuild will correct the problem just let me know. Any other suggetions would also be grateful.

Thanks....

s-man · #2 July 22nd, 2003, 10:15 AM

Any Ideas????

dcm3372 · #3 July 22nd, 2003, 03:10 PM

Hi I have a 30AM 1980 Mariner that had a similar type problem that may be the same cause.

I found after a while at low speeds it would die and be impossible to start again. It turned out to be the float valve sticking and over-filling the carburettor.

I discovered it by noticing after it happened and the engine wouldn't start, squeezing the priming bulb caused fuel to spurt out the carburettor over-flow.

When I saw that I firmly tapped the carb and it cured it and the engine started again. Since then I stripped the carb and squirted carb cleaner through the valve several times. The problem never came back.

Hope this helps!

Dan.

s-man · #4 July 23rd, 2003, 06:13 PM

Thanks for the idea Dan. I'll give it a try and see what happens