50 mercury hp no start

[phatdaddy]

6 gallon tank or built in tank?

Quick disconnects on fuel line?

Go buy a qt of Trufuel 50:1 E free fuel.
Disconnect fuel hose from tank.
Stick it in the Trufuel can
Pump ball till firm
Start motor

If it doesn t start, problem is upstream. . . Fuel pump then carbs
If it does start, problem is downstream. . . Filter,tank pick up,connection.

Also, i know u run ethanol, so could be collapsed lining in fuel line

If it does start on the Trufuel then dies, try holding the can higher than the engine. This will give u a flooded suction to the fuel pump and make it easier for a weak pump to pump fuel. I used to be able to tell when my fuel pump was getting weak on my old Merc because after trolling about 15 minutes, it would get slower and slower. Would have to go back and pump ball.

[steplift20]

Tried two differant tanks. If I put gas straight into the carbs she starts up. I feel it’s a carb issue. I had them rebuilt last year but honestly where I liv3 the mechanics are not the best if you can find on3 who works on an old engine. I mean. A carb is a carb.

[phatdaddy]

Carbs cant carb if fuel is not getting to them.

Pump ball hard and open bowl drains on carbs, see if gas is getting to them.

[steplift20]

No gas to bowl. You know what really sucks,I had them rebuilt last year , I went back to him and he said it’s probably the needle. Ok than he says it will cost about $500.00 to rebuilt the two carbs. He did it a year ago. I liv3 by lake hopatcong and the so called mechanics here are not good like down the shore. I think im going to wait till next year. The people up here are nice the the mechanics suck

[phatdaddy]

are u sure gas is going thru the fuel line to carbs

[steplift20]

Phatdaddy ,youknowi didn’t check that.im going to disconnect the fuel line going to the carb and see if it’s clear. That’s a very good point, start with the simple and work your way up. I’m going to look at that tomorrow
I will post here with the results. I hope the fuel line is bad,that would br great.

[scook]

Hey Step - I’m not an outboard guy, but I do have a lot of stuff with carburetors. To check if that guy’s needle comment MIGHT be correct (could also be a plugged passage or jet in the carb), and you can drop the float bowl, if there’s gas in the bowl, you’re probably getting gas to the carb(s).

That would be after checking the fuel line like Phat said and being sure you’re getting good fuel flow past the filter. For that, I’d test it by pulling the fuel line off the gas tank and motor and putting some air pressure in the tank end to see if the flow is good. Pretty gentle pressure should send a good flow.

My $.02 worth.