SailNet Community - View Single Post - 1967 Westerbeke 4-107 failure to crank
View Single Post
post #3 of Old 01-02-2010
Senior Member
Join Date: Oct 2009
Location: Gloucester, MA
Posts: 586
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
From your description, it sounds like it will crank but not start. In a diesel, this means that you are not getting fuel into the cylinders almost all the time.

Start with the simple stuff. Is there enough fuel in the tank? Is the shutdown in the correct position? Are all the fuel lines properly hooked up?

Once the obvious stuff is done, you should start working on the less obvious. A common cause of this problem is a small air leak in the fuel system which has allowed air to enter your fuel system. Try cracking a fitting on the IP side of the fuel pump and see whether you are getting a steady stream of fuel or whether there is any air involved. Keep moving down the line and checking that you get good fuel flow until you have loosened a few injectors. Once you tighten these up so that they fire, it should start.

From time to time, there is actually a mechanical problem that causes this but it is almost always either operator error or an air leak. Don't be afraid of cranking with a lot of throttle.

Good luck.
klem is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome