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First start this season went fine for a few seconds than stalled and has not started since. Seems to be plenty of fues up to the injection pump bleed screw but not much at the injectors. Anyone hae a suggestion and a source for an injection pump if it comes to that?
Phil Fontaine
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Phillip, the pump is fine. It is near indestructible. You have a bleeding or lack of fuel issue. Where is the injection pump bleed screw you are opening? The proper bleed point is on the inboard side of the pump, facing the engine. It is a 5/16th nut on the top cover, facing towards the block just inside and below the throttle lever (technically it's called a fuel rack, not a throttle). This should be the only point on or around the pump you need to bleed.
The W60 bleeding instructions are correct and will get you running, start at the beginning though, regardless of that you think is bled. My buddy RT had his Yanmar all torn apart looking for a fuel issue, I found a big piece of silicone in the tank that liberated itself from the inspection plate sucked as far as it would go into the pickup. Had he started at the beginning he'd have found this first.
When you crack the injector line fitting (the nut that wraps around the metal feed line from the pump) these only need to be snug when you tighten them up. Over tightening will crush the brass ferrule and it will leak. Be gentle with these.
More importantly, if the solenoid at the top of the tank is in the closed position as it is when the key is off your not getting any more fuel and your efforts are wasted. This has a small set screw on the faceplate that turned 90 degrees will override the cutoff valve.
Some of the crew on here have installed electric fuel pumps in the circuit, and I understand this will speed up and possibly eliminate the bleeding process.
You can use the starter to operate the fuel system, just don't turn it for more than 10-15 seconds as you open the various bleed points. Do be careful and wear eye protection. Remember that pump/injector has to overcome the pressure created in the cylinder when it's nearly top dead center, it is then when it injects the fuel so imagine the pressure that the little rotary high pressure pump is creating.
A decent mechanic should be able to bleed it in hour tops, but you should learn the process and understand the fuel system if you do or plan to be offshore. I paid to have it done once, but it took a second time of doing it after my rebuild that I really understood the system.
I have a second pump, but I doubt you need it.
Chuck
On Tue, May 19, 2009 at 9:50 PM, Philippe Fontaine < ([email][/email])> wrote:
First start this season went fine for a few seconds than stalled and has not started since. Seems to be plenty of fues up to the injection pump bleed screw but not much at the injectors. Anyone hae a suggestion and a source for an injection pump if it comes to that?
Phil Fontaine
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Phil
Are you comfortably familiar with the bleed process for this engine? If not, it is likely that you need to bleed the system. If you want hints for doing this, just ask.If it turns out to be a pump problem, I don’t recommend replacing the injection pump. The unit is too expensive. If you’re going to spend that kind of money I suggest putting it toward a repower instead. Someone may have a used pump from a spare engine however.
Regards
Rich
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