Hello everyone -
a couple of weeks ago, my MD7A would not start. It had run fine for a month or so (after a fuel
saga and successful filter replacement and bleed), but one day heading out for a sail after a few days of non-use, it just simply wouldn't start.
I bled the system again, following the correct CAV fuel pump
procedure. I noticed the delivery
pipe closer to the flywheel had a spurt-spurt-spurt pattern, but the other pipe had much less pressure. Still, I was able to get the motor
started. It revved up well and sounded ok. But, I noticed the exhaust
had a lot of white smoke, and there was a a lot oily discharge.
I then bled just that back lower flow pipe and the motor
actually started in the bleeding process just on the one cylinder! Fuel
is coming that pipe, just not as much.
I connected it back, and can't start the motor. It tries to catch, sounds like it's spinning up, sometimes runs/coughs for a second or two, then quits. That's where I'm at now.
Fuel, air, compression
. Filters look good. Don't know what water
would look like in the separation filter...all the liquid is uniform. So fuel should be ok? Air should be fine - it was a sudden failure vs bird's nest over time. Compression
Is the CAV designed such that one side could fail? So one cyllinder gets full fuel and the other gets a small amount?