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LOOKING AFTER THE MECHANICALS



Regular maintenance will ensure you get the best out of your engine and transmission systems components.

Due to the unique conditions that we operate in on the inland waterways, it is good practise to consider your diesel system as a component that requires looking after in its own right.

We cover the subject of fuel contamination in detail in our chapter on Diesel Bug.

Here for your convenience you can find the essentials for ensuring your canal boat engine remains free from fuel contamination.

Routine Maintenance

Regular filter changes will keep most debris away from your fuel pump and injectors. When changing filters, look for discolouration, clouding or gelling.

Keeping the fuel tank topped up reduces oxidation by limiting exposure of fuel to air. If fitted, regularly drain your water trap.

Keep on top of oil and filter changes as the mix of oil and un-burnt diesel fuel in your engine becomes highly corrosive to engine components. Blockages in oil galleries can occur in extreme cases of neglect.

At least once a year draw fuel from the base of the tank by either the tank drain plug, if fitted, of by use of a siphon tube that reaches to the bottom of the tank.

This will help in the removal of any water or debris that has collected in the bottom of the fuel tank. We would suggest a good few litres until the fuel is seen to be clean and clear. Dispose of the drawn off fuel responsibly.

Additives

Additives are available that can decrease diesel fuels susceptibility to atmospheric contamination by water.

Others are available to stop microbial growth occurring and that will lower the cloud point in winter to stop diesel waxing in low temperatures.
Waxing is caused by dissolved solids coming out of solution at low temperatures. This is not a desirable property in the depths of winter especially if you rely on running your canal boat engine for power generation or your heating is diesel fired.

If you see evidence of clouding or gelling in the fuel, there is a potential microbial infestation.

Liquid additives are available that will kill any microbes. Remember that the dead bugs will still cause problems. They, and all the associated debris, must be removed.

Filtration and “Polishing”

By far and away the best way of preventing bad fuel reaching the delicate fuel system components is to fit an in-line decontamination filter.

Fitted between the tank and the fuel lift pump, a decontamination filter uses a simple reusable lifetime filter. The simple filter element is stuffed with high technology to ensure both water and undesirable particles that have formed in the diesel fuel tank never reach the fuel delivery system.

Decontamination filters will not remove diesel bug from canal boat fuel tanks, but what they will do is to totally prevent the contamination from reaching the engine.

Kits are available to modify a decontamination filter to return cleaned fuel to the tank rather than deliver it to the engine. In this case, over a period of time, a decontamination filter can be used to “polish” or completely clean diesel in the fuel tank.

Diesel “polishing” is a service offered by companies who own industrial scale decontamination filters. Fast throughput equipment is used to remove contaminants. Often an inhibitor is dosed into the tank to help prevent future build-ups.

We have learned though, that due to the nature of diesel fuel, removal of contaminants will not prevent problems from reoccurring.

The only sure way to prevent running issues is to fit an in-line decontaminator.

Testing

Inexpensive self-test kits are available to test for excess water, bacteria, mould and fungus.
The presence of any of these contaminants can be dealt with if detected soon enough.

See our Specialist Products and Services directory listings to purchase your peace of mind.
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