Starts fine, idles fine then dies.

[mulhollandmaster121]

Hey guys,

Been driving my m715 around with no problems whatsoever. In fact, the other day I was admiring how fast it starts up and how perfect its idle was.

Then, yesterday when I went to start it, it started fine and then abruptly died. Which sent me down the rabbit hole all day of adjusting idle and A/F and even swapping out the coil just to cover my bases.

Today I go out to try again and it starts and sets into a perfect high idle for about 15 seconds and then dies. I've been adjusting A/F to various effects but it's the same ol' story every time. Starts, idles perfectly fine for a few seconds and then sputters and stalls out. I can keep it alive if I open the throttle up but when I lift off it goes kaput.

I know next step is probably to just rebuild the carb but the one kit I found that seems to be what I need is out of stock, so that's unfortunate. In the meantime, is there anything else I should check? It's just so strange how it was 100% fine one day and the next is completely dead in the water, with no indication beforehand.

[kwai]

Check your fuel pump. It should fill a quart bottle in under 30 seconds.

[gonz]

Fuel pump, fuel line, fuel sock in the tank, etc. I would also check to see if a previous owner put a in-line fuel filter as well.

[mulhollandmaster121]

PO put an electric fuel pump on the frame and it's been buzzing pretty loud- funny enough I've actually never had to deal w/ electric pumps before so I assumed that the noise was par for the course.

So hopefully it's just the rear fuel filter is clogged because then it's a $6 part that'll take me a minute to swap. Which is good because it's pouring rain today. Thanks for the advice, guys.

EDIT: Swapped fuel filter and it runs fine again. Kicking myself for screwing w/ the carb and swapping a perfectly fine ignition coil before handling something as simple as the rear filter, but got her running as good as she was before. Thanks so much for your input.

[Uncle Vin]

The postscript happy ending to the story is helpful. I can't even begin to recount how many threads that I have read on other sites where the solution to the issue is never posted. Good job.

[DAVEJ]

Amen ,Uncle Vin

[m38inmaine]

Good job on finding the problem, I would inspect that old filter and see why it clogged, it may be time to pull and inspect the tank so it doesn't leave you stranded.