Restitution
Senior Member
So, I am helping a friend on his Sea Ray. His Generator is a Mercury 4 cylinder. It it has a Carburetor and the motor is constantly flooding. Here are some known facts:
1. New carb.
2. Raw gasoline gurgling and pooling outside of #4 EXHAUST manifold
3. Good spark on all cylinders
4. 180 PSI on ALL cylinders
5. Larger after market fuel pump, but adjusted to 1lb psi of fuel pressure via
a regulator. Still same problem.
6. Needle and seat seem to be fine (new carb) and floats are parallel to carb
body.
The most significant question is this. Why would raw fuel accumulate and pool out of the exhaust manifold????? With 180PSI indicated, could the exhaust valve still be stuck? Why is it being pumped out at the exhaust manifold gasket and not out into the river? Back pressure?
Sure, the exhaust manifold gasket is shot, but why the raw fuel on #4?
Any help or previous experience would be appreciated.
Thanks,
sam nigro
1. New carb.
2. Raw gasoline gurgling and pooling outside of #4 EXHAUST manifold
3. Good spark on all cylinders
4. 180 PSI on ALL cylinders
5. Larger after market fuel pump, but adjusted to 1lb psi of fuel pressure via
a regulator. Still same problem.
6. Needle and seat seem to be fine (new carb) and floats are parallel to carb
body.
The most significant question is this. Why would raw fuel accumulate and pool out of the exhaust manifold????? With 180PSI indicated, could the exhaust valve still be stuck? Why is it being pumped out at the exhaust manifold gasket and not out into the river? Back pressure?
Sure, the exhaust manifold gasket is shot, but why the raw fuel on #4?
Any help or previous experience would be appreciated.
Thanks,
sam nigro