50 mercury hp no start

[phatdaddy]

I m confused. U disconnected fuel line at carbs and blew air toward tank. When u did this fuel came out of bottom carb. How did the air get to carbs if u disconnected the fuel lines to them?

[steplift20]

No ,I disconnected the fuel line from the inline filter and blew air in the line going to the carbs, the bottom carb blew air and gas out the top carb did not. But yesterday it ran great so today I started it and she started on 5he first try,then stalled out and could not restart it unless I put carb cleaner into the top carb,than it started but stalled so I think the problem is with fuel getting to the carbs. I think what I’m go8ng to do next is remove the fuel lines (. It may) and replace it with new fuel lines. I don’t know much about carbs so I will leave them alone but check the lines. What do you think?

[scook]

Again, not an outboard guy, but I would unhook the fuel line at the tank and at the carbs and blow air from the tank end through the whole fuel line/filter system. That way you know that fuel is getting there. Not blowing very hard, so you get as close to an actual conditions test as you can. If the fuel line(s) look crumbly or swollen on the inside, definitely replace all of them. If they’re at all crumbly, a chunk of the line could be in the carb(s) intermittently blocking flow.

With the fuel lines off the carbs, can you squirt some carb cleaner pretty hard in the fuel inlet on each carb? That should have some chance of freeing up a stick float needle and possibly clearing other passages.

If that fails maybe check to see if SpareParts would be willing to rebuild the carbs if you sent them to him?

That’s my best shot at it. There may be some diagnostic YouTube videos that could help, but it really does sound like something in the carburation is plugging up.

[steplift20]

Scook I agree with you that’s what I want to do
Check the fuel lines. Two days ago she ran great,yesterday she started right up and was running perfect then while I’m standing there she stalled out and could not restart. I went to prime 5he bulb and it was rock hard so what I’m thinking is there is a blockage from the bulb to the carb. But like you said I hav3 to check the lines first. Scook your the best but I wish spareparts had a shop in nj. The so called marine mechanics here in nj are not the best but they charge $140.00 a hour I don’t know what they charge where you live but here in nj. Crazy. I’m go8ng to follow your advice cause I agree with what you I will post the results
Thanks Scook. I will get it running. But if it’s the carb then I will hav3 to bring her to a so called mechanic
Thanks

[scook]

Spare Parts is the best, not me. I’ve been thinking about it and, while the fact that there are two carbs makes me doubt myself a little, it sounds like it could be a bad fuel line, but it could also be a float valve sticking closed or it could be an intermittent little hunk of something lodging somewhere in the carb.

I think yours idea is the most likely though - a problem (maybe a loose flat of rubber) in the fuel line before it splits to go to the carbs.

If you need the carbs built, I wouldn’t give up on Spare Parts. This is something he could probably do at this kitchen table and he might welcome a chance to do a little mechanic work particularly since it wouldn’t require him to get iin any painful pistons or lift hundreds of pounds.

Yeah - our mechanics are crazy expensive too. I try to do all my own work, which I haven’t done much of lately.

[steplift20]

$140.00 a hour dam that’s a lot. $ hours $420.00 plus parts. I got into the wrong business . If I was younger I would go into. Marine engine repair mostly mercury outboards.
In goin* to try again blowing air into the lines

[scook]

Have you done any research to see if there’s somewhere you can send them to be rebuilt that gets good reviews? Or tried to contact Spare Parts?

I hate to see you overpay some local bozos if there’s a better option.