[Minnewaska]

That would be an odd problem for a pump. Have you checked that the line isn't clogged or kinked?

By the way, same engine, same problem, different member name, from a thread on the same topic. Did you open a second one?

I think I broke my Yanmar 2QM15

Hello all. I'm very new to sailing, I just bought my first boat, C&C 29. I noticed a leak coming from my secondary filter, so I decided instead of just tightening the top, I would change both filters. I regret my decision. After a long day of changing filters, getting diesel all over the place...

www.sailnet.com

 

[Minnewaska]

I changed the filter because in my infinite wisdom decided it was probably time to put the spare in. LOL.

Good plan. The filter manufacturers specific the amount of time the filter media can remain exposed to fuel. One year, by calendar, is what I've typically seen, with a variety of hours in use. There may be an argument the OEM's are just trying to sell filters, but it stands to reason these filters would decay eventually, while sitting in a solvent.

Their web site says these pumps don't go bad unless there is bad fuel, and I already know that is not the case.

I agree. Injector pump failures are most likely to just become timing issues and the engine still runs. OR, they fail completely. I had an internal shaft break on one and it was done. Pumping out of one line and not the other is very odd. Airlock isn't setting right with me either.

Have you removed the fuel lines from the pump itself and cranked to see whether each pumps fuel?

 

[Minnewaska]

Reads like they are saying the plunger gets stuck, not the cam. Let us know if the tap-a-tap fixes her up. Injector pumps a delicate device to be whacking too hard.

Reminds me of helping my Dad change the ball joint on our family car, when I was a kid. He had this fork-like tool that was to separate the joint from the rocker arm. We tried everything, for hours and hours, to get them apart, including heat and every form of spray witchcraft.

Finally, he calls a friend who owns a garage. His friend says to take a small sledgehammer and bash the side of the rocker arm. My Dad asks whether that could break anything, to which is friend says, if you can break it, I'll buy you a new one. Bash away.

We return to the car in the garage, one swift hammer blow and she dropped right out.