Maintenance Tip of the Week: Air Filters 01/11/2015

Maintenance Tip of the Week – Air Filters 09/28/2015

Air filters are often neglected or forgotten as part of a maintenance plan. Always ensure that air filters are changed as suggested by your manual’s maintenance schedule. As a part of the combustion process, a supply of clean air is always required by the engine.

Maintenance Tip of the Week: Fuel Tank 01/04/2016

Maintenance Tip of the Week – Fuel Tanks 09/21/2015

Condensation can build up in fuel tanks very quickly. In order to reduce the likelihood of water contamination in your fuel, always operate your engines with the fuel tank as full as possible.

Maintenance Tip of the Week: Hoses 12/28/2015

Maintenance Tip of the Week – 12/28/2015

Before operating your engine, always check all hoses, clamps and fittings for leakage and wear, replacing them if necessary.

Maintenance Tip of the Week: Vessel Use 12/21/2015

Maintenance Tip of the Week – Vessel Use 12/21/2015

So, you have religiously followed the maintenance schedule for your engines as outlined in your manual. Everything should be good, right? Not necessarily. You need to pay attention to how you use your boat. If you only use your vessel 25 hours per year, fuel deteriorates, condensation occurs, and corrosion keeps up its’ never ending march. This is why your maintenance schedule is often broken down into time periods of use, as well as calendar time.

Diesel engines perform best when they are started and used frequently. Always follow the storage procedures as detailed in your manual if the vessel will be sitting idle for long periods of time.

Maintenance Tip of the Week: White Smoke 12/14/2015

Maintenance Tip of the Week – White Smoke 12/14/2015

Smoke is always a leading indicator of engine problems, normally fuel or combustion related. With the current emissions standards that require compliance from Marinediesel, you should never see smoke coming from your exhaust. That said, what does white smoke indicate?

1. Bad fuel quality (most common)

2. Problems with combustion

As to bad fuel quality, the first step should be to check the filtration and see what is causing the problem. Fuel treatment or enhanced filtration may solve the issue.

Regarding combustion, there are many causes: Pump failure, air filtration or exhaust pressure issue, clogged injectors, changes made to the ECU, worn gaskets or damaged manifolds.

If the fuel quality is good, then the presence of white smoke indicates that major service is absolutely necessary.

Maintenance Tip of the Week: Gearbox 12/07/2015

Maintenance Tip of the Week – Gearbox 12/07/2015

Always check the level of fluid in your gearbox according to the manual from the manufacturer. Ensure that the level is correct. Gearbox fluid may be checked either hot or cold.

Maintenance Tip of the Week: Fuel Filters 11/30/2015

Maintenance Tip of the Week – Fuel Filters 11/30/2015

When changing fuel filters, it is important to always “bleed” air from the fuel lines to ensure that the function properly and that the engine is not starved for fuel.

Maintenance Tip of the Week: Vibration 11/16/2015

Maintenance Tip of the Week – Vibration 11/16/2015

Vibration is a leading indicator of engine, gearbox, shaft, and propeller problems. If, while underway, you feel an increase in vibration, or unusual vibration, the propulsion system must be inspected immediately as soon as it is safe to do so. Continued operation with damaged propellers or shafts will quickly ruin your gearbox and damage your engine (This type of repair is also usually very expensive).

Wiring Color Coding

When you take a look at an engine, it can easily resemble a mass of wires and cables. However, one of the tools provided to assist in maintenance is the color coding of wiring. Wiring is standardized according to SAE regulations, of which Marinediesel is compliant. However, color codes between manufacturers may vary slightly from make to make.

Marine wiring is twisted pair, shielded, to minimize interference (EMF). It is required to be both oil resistant and able to withstand heat of at least 75° C.

There are a few minor differences between marine wiring and wiring intended for land vehicles, normally the fact that vessels require a higher gauge and extra moisture resistance due to their environment.

So, what are the color codes?

Marinediesel has numerous charts listing the color codes to specific engine components in our electrical manual, available for download.

Though there is some variation, as mentioned, between manufacturers, there are some general consistencies:

marine wire


Maintenance Tip of the Week: Battery Cables 11/09/2015

Maintenance Tip of the Week – Battery Cables 11/09/2015

Battery cables are flexible. Periodically check your cables by flexing them. If your cables are defective, you should hear a crackling sound when flexed, in which case, replace them.