injection pump | Obp Ltd Blog

obp Tech Session Longer Life For Fuel Pumps

Hello.

I have just come accross this bit of information and feel it would be of interest to you and may even save a bit of your hard earned cash!

Electric Fuel Pump Precautions

The heart of the fuel injection system is the main fuel supply and the fuel pump needs to operate at 100% for the injection system to function correctly.

So , why are we talking ‘Fuel Pumps’?

Well, the purpose of this message is to ensure that we maximise our driving and racing enjoyment and reduce maintenance expense by taking note of the following points:

Fuel & Fuel Tank Contamination

Fuel Injection pumps are by design, manufactured to close (tight) tolerances to produce the desired high fuel pressure. Minute particles of contamination ie. water, rust or dirt entering the pump will prove fatal, causing permanent damage to the fuel pump.

Low Fuel Levels

People who consistently drive on reserve fuel levels run also the risk of failure. An injection pump operates at approximately 5000 revs/minute and relies on fuel to lubricate and cool the moving parts. Remember, next time you drive on reserve fuel, pump damage may be occurring. Fuel supplied by the petrol station can be contaminated, and this dirty fuel is just waiting at the bottom of your tank.

Pump Failed – Overheated

The above events result in the pump overheating over weeks or months, followed by final failure, and low fuel levels will also not help with the cooling process of the pump.

Blocked Fuel Filter

Always ensure that the Fuel Filter is maintained regularly. Fine contamination and fuel wax will restrict fuel flow causing back pressure on the fuel pump and restricting its natural function. This results in fuel cavitation followed by progressive pump damage and resulting in failure.

So please make sure that you:-

1) Avoid driving and ignoring the Low Fuel Warning Light.

2) If you are aware of fuel contamination, get the system cleaned, starting with the fuel tank!

3) Follow the maintenance program of your vehicle, which includes the fuel system.

Please Note:- If you have just removed a fuel pump, ask yourself why it failed. If you do not take a minute to consider this question, the New Pump may suffer the same fate!

An expensive oversight for just a moments thought!

Thank you for your time.

I trust this has been of interest to you.

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