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View Full Version : Mercury Tech 2.5 /200 carb motor ..



ofna2005
11-08-2009, 02:09 PM
Guys I know this is going to be and easy fix for you experts .
When i go to choke my motor the lines don't get full of fuel . I feel the solenoid engaging but no fuel flows . How do i fix these minor issues ?

ofna2005
11-08-2009, 02:44 PM
Maybe i said it wrong . When i push my key in ,the motor use to self choke itself it no longer does that. Without that motor is hard to start any ideas out there ?

tlwjkw
11-08-2009, 03:49 PM
Push tha button on top of tha enrichner valve. Hold it down a few secounds and see if that helps ta start it. Might have ta do it a couple a times. Probably gonna need to replace tha valve..........

Make sure tha little hoses are all in place first.

ofna2005
11-08-2009, 04:01 PM
Hey thanks for that , I tried that the gas flowed for a second then it had air bubbles in the line . Can't seem to get air bubbles out .

ozziffied
11-08-2009, 04:53 PM
Hey thanks for that , I tried that the gas flowed for a second then it had air bubbles in the line . Can't seem to get air bubbles out .

lines need to be replaced then.

sschefer
11-09-2009, 04:59 PM
1. Bad check valves in the fuel pump.
2. Bad Needles/Seats in the fuel bowl.
3. Bad Squeeze bulb check valve.
4. Bad choke solenoid not closing fully. It acts like a check valve when it's closed.
5. Cracked and leaking fuel line(s).

First eliminate #5 by visually checking all the fuel lines for leaks as you squeeze the primer bulb.

Next, disconnect the bayonett fuel fitting from the engine and look for leaks at the engine connector and the fuel hose connector.

Next, get a fuel safe container to catch fuel then use a blunt object to open the fuel side of the fuel hose fitting. Squeeze the primer bulb and look for bubbles in the fuel. If there are bubbles then there is a problem between the connector and the tank. Happy hunting.

If the stream is solid and steady then you've isolated it to something on the engine.

Disconnect the output side of the choke solenoid, squeeze the primer bulb and see if fuel flows out. If not, solenoid is closing. If it does, replace the unit.

With the output side still disconnected, push down the manual choke button on top and squeeze the bulb. If you get bubbles and then a solid stream stop, wait 15 minutes and try it again. If the results are the same and you have no other fuel leaks then it's a check valve leaking somewhere. If it's good then you had air in the fuel lines and it just needed to be purged out.

If the bubbles are still there, start by replacing the primer bulb, then rebuild the fuel pump and finally a carb rebuild. Retest between each so you don't go doing something you don't need to.