Fuel Lift Pump: Easy DIY Diesel Fuel System Diagnostic and Repair

Most problems with diesel engines are fuel related. In this DIY lesson, learn how to diagnose a fuel lift pump failure and tips for installing a new one.

0
This is the faulty diesel lift pump, the arrow is pointing to the sluggish primer lever. That is an issue because the fuel lift pump needs to provide the right amount of fuel and fuel pressure to the injector pump. (Photo/ Marc Robic)
This is the faulty diesel lift pump, the arrow is pointing to the sluggish primer lever. That is an issue because the fuel lift pump needs to provide the right amount of fuel and fuel pressure to the injector pump. (Photo/ Marc Robic)

As with all things in life, everything goes well until it doesn’t. It is an inevitable truth that something will go wrong eventually and will need some TLC! Taking precautions with regular and preventative maintenance will certainly help prolong the time interval between any issues. When it comes to our beloved engines, however, all the preventative maintenance can’t prevent the invisible wear and tear on various components. This wear can result in a broken water pump impeller or, as in the case of this true-story, a worn-out fuel lift pump.

To continue reading this article or issue you must be a paid subscriber.

Subscribe to Practical Sailor

Get the next year of Practical Sailor for just $34. And access all of our online content - over 4,000 articles - free of charge.
Subscribe today and save 42%. It's like getting 5 months FREE!
Already Subscribed?
| Forgot your password? | Activate Web Access
Marc Robic
Marc caught his love of sailing and all things water from his father from a very young age. He has owned many sailboats in his 40+ years of sailing. An avid do-it-yourselfer and handyman, he builds, modifies, improves and executes all his own repairs. He also enjoys testing, documenting & sharing products and how-to methods with other sailors and boaters. Posting many how to videos on his YouTube channel and Facebook page. He is a member of the Canadian Power and Sail Squadron. Currently, he sails his Catalina 270, Aquaholic 3, out of the Ile-Perrot Yacht Club in Montreal, where Marc spent 16 years as Harbour Master. He is also a regular bareboat yacht charterer, having sailed most of the Caribbean islands. In the winter months, Marc regularly hand builds exact scale models of friends’ boats to give them away in the spring.