I need some help with a diesel
problem that popped up.
Installed a new Racor
215 with a 10 micron filter a month or so ago. Based on various posts, I purchased two 2-micron filters as spares. After reading that some people have a problem getting the factory filter off, I decided to remove the filter after only 10-15 hours. Since the original 10-micron was damaged when I removed it, I installed a 2-micron.
Went out today and had no issue going out the inlet. Off the coast I had the following problem- sailed for an hour or so in 1-3 maybe 4' seas and light wind
. With a nasty squall approaching, I cranked up the engine
. The engine
stalled after running at 2,800 for about 30 minutes. Since it sounded like fuel
starvation, I bled it at the high pressure pump. Cranked it up and continued to run off shore (no wind). Same thing happened while running at 2,800. After the squall passed, I removed and reinstalled the Racro, checked all fittings and made sure the secondary filter was tight. I bled it .... Again.... Outside the inlet, I fired it up and headed home at 2,000 rpm
. No issues! Ran like a champ!
At that point I saw two possibilities 1) a vacuum leak small enough for the fuel
pumps to keep up if the RPMs are low. 2) the lift
pump cannot pull through the 2-micron filter if the RPMs are up.
Back at the dock
in another squall.... I turned the engine off and waited 30 minutes. The engine started right up! It would appear that the fuel starvation was the result of the lift
pump not pulling enough fuel through the 2-micron.