powerpro 17" weedeater engine

[turborg]

This engine will run off the gas in the carb with the fuel line disconnected, but will flood as soon as the line is connected. It seems to be force fed gas but I can't figure it out. It does have a primer pump bulb. The fuel filter is hooked up. It also doesn't seem to matter if the gas cap is on or not. I do have the correct 40-1 fuel mixture. Any help greatly appreciated!

 

[Russ2251]

If you are sure all tubing is connected as it should be...then look into replacing diaphragms.
Sounds like pop off pressure may be the problem.

 

[solomon]

Be sure the needle isn't stuck. Make sure the lines aren't backwards or cracked.

 

[turborg]

Be sure the needle isn't stuck. Make sure the lines aren't backwards or cracked.

The lines are on correctly. I had a problem with the filter being disconnected and sucking air. I replaced an old line on the filter. I did have the line that goes back to the tank from the primer off as this is where i noticed bubbles. It ran lean until this problem was taken care of. The flooding problem started after the line replacement/rehook of filter.
Where is the needle you refer to. It looks like the mixture and idle screws are in the correct position.

 

[Russ2251]

I had a problem with the filter being disconnected and sucking air.

Probably sucked in some debris in the process.
Disassemble carb and check fine mesh screen. Probably not quite clogged enough to stop engine completely, but will in short order.
Check pop-off spring and lever.

 

[solomon]

The needle will be under a diaphragm in the carb, usually 4 screws hold a metal cover on.

 

[turborg]

The needle will be under a diaphragm in the carb, usually 4 screws hold a metal cover on.

I took off the top plate(two screws) and under the plate was a clear plastic diaphram that fits over some channels in the top of the carb, which are connected to the the inlet gas. I assume this is the pumping diaphram but I did not see the needle or screen mentioned in the above posts. I did this before I posted so with the info I have now I might be able to find them. Is the excess pressure developed by the diaphram returned to the tank via the primer pump? If it is, I may have sealed off this line inadvertently when I put it back in the tank.

 

[Russ2251]

Please give exact make and model number of weedeater and year (approx) of manufacture.
Should be a name tag somewhere on your equipment.
Without this info...we're just shootin' blanks.
A clear pic would be best.

 

[motor_head]

you need to take off the plate on the other side of the carb it has a black diaphram under it