Peugeot 106 Diesel 1.5 Fuel Pump leak (1996)

[964Ste]

The fuel pump on my P Reg 1.5 Diesel Peugeot 106 is leaking fuel- looks like from near where the pulley for the cam belt etc attaches. My car has an immobiliser key pad which i believe links to the pump. Is it possible to replace the fuel pump and re-program the new pump, or must the replacement fuel pump come with its code?

One breaker said i would have to take the solenoid off the end, but i don't want to throw good money after bad... Thanks

Additional info- the fuel pump on the car is a Lucas, mileage is 117,000 , have been running it mainly on bio diesel (2 stage refined) for just under 3 years, and add Redex fuel system additive. Mechanically, the rest of the car is spot on.

Many thanks

 

[Mursal]

Breaker said to take the immobilizer off your old pump and bolt it onto the secondhand pump, is that correct?

You wont get any better advice than that, not a main dealer mentioned.

 

[964Ste]

Breaker said to take the immobilizer off your old pump and bolt it onto the secondhand pump, is that correct?

I asked if his pump came with the immobilizer code and his reply was as follows...

"Hi,
no you will need to change the solenoid on the end of the pump,
kind regards,"

I don't understand this- is the solenoid the immobilizer?

 

[Mursal]

Yes, but just ask whoever you are getting to do it for you, if they are prepared to strip the pump for you.
Some garage will only refit a complete pump, you will have to get the back of the pump swapped elsewhere, with a diesel specialist. But, they may not want to work on secondhand parts for you, so check first.

There will be a few different pumps depending on age, so have a good look at your own for comparison. Engine code would be the proper way to ensure correct part.

 

[964Ste]

Ok thanks for that!

 

[JulianP]

Remove the immobiliser from the pump (behind a cover secured with shear bolts) and find the live feed from the ignition - route this directly to the 12volt solenoid on the pump itself.

You now have no immobiliser but who cares on a car worth 200 quid, the plus side is you remove a load of silly electrical bits that will let you down one windy rainy night!

But the easiest solution is to fit a new seal. You can remove the pump and leave the pulley bolted to the engine so you don't disturb the timing. The seal is a standard metric item - measure the outer diameter and shaft size and get one from Simply Bearings (Viton). It's a morning's work at the most.

Julian

 

[964Ste]

Many thanks for the advice. I managed to get a seal replaced at Fuel Injection Services in Burscough (great guys- thoroughly recommended!) and that solved the leak.

Unfortunately, it's still taking a while to start up when cold. I timed it this morning- it took 30 seconds on the key. I'll use up all the bio in the tank and then fill up with diesel to see if it's the fuel...

 

[JulianP]

Glow plugs. Normally.

 

[Mursal]

Yes, as above

If you have the little bellows fuel pump for priming after a filter change, pump it until hard and go for a start? If it starts without winding, consider an air leak into the fuel line overnight/when stopped.

 

[964Ste]

Hi, thanks for that.

What i've found regarding glow plugs is they need replacing every 18 months ish. They were last changed in October, and in November i had the glow plug master relay thingy (under the bonnet) replaced for a new unit too. Also, when the plugs are on their way out, it'll start (just about) for about 2 days and then it won't be possible to start it at all.

The way it is now, it WILL start eventually, albeit after 20 or 30 seconds on the key.

The primer bulb is fairly hard to start with- i have squeezed it, but it remains just as hard.

 

[Mursal]

Make sure the replacement plugs are the correct voltage (they are not just 12volt) and go for a good brand NGK, Bosch etc.
Outside temperature, could be why it starts sometimes, ever though the plugs are not working properly

If you keep cranking for to long on a permanent basis, you'll soon need a starter.

Good to hear you got the pump sorted .............

 

[Belle427]

worth checking how long the glow plug circuit is energised for too, you can install a manual override button if needed to hold them on a bit longer.

 

[964Ste]

Well i took it back to the garage and asked them to check the glow plugs (although i was convinced it couldn't be, because they were changed late last year) and the fuel pump pressure valve thing.

Turns out that no.2 and 3 plugs had failed.... 4 new plugs and it starts straight away now.

However... the night i took it back to the garage, the battery warning light came on on the dashboard. Still on now, and the lights are dim and wipers much slower than normal. Have i goosed the battery now?

 

[Mursal]

Check the alternator drive belt and the wires on the back of the alternator, otherwise its looking like an alternator problem.

Good to hear you got the starting sorted

 

[964Ste]

Check the alternator drive belt and the wires on the back of the alternator, otherwise its looking like an alternator problem.

Good to hear you got the starting sorted

Ok, thanks a lot for that, Mursal!