Timing belt change

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Redculver
Posts: 1
Joined: 02 Sep 2025, 11:07

Timing belt change

Unread post by Redculver »

Hello,
As an intro this is my first post and looking forward to sharing experiences.

I have recently replaced a timing belt on wife's car.This is a Citroen Picasso C3, Airdream, 1.6 HDI, 2010.I did this myself only because the cost of having a garage fix this was out of reach for our budget.

I was patient ( having not done this before),and it all appeared to go surprisingly well.However,I did hit one snag and this is where I am requesting a voice of experience.

The timing holes for the crank and cam lined up perfectly, but I could not for the life of me, line up the timing mark for the fuel pump.I admitted defeat and completed the assembly but have not run the car.

If I were to leave this as is, would this make a significant difference to the running of the car.
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mickthemaverick
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Joined: 11 May 2019, 17:56
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Re: Timing belt change

Unread post by mickthemaverick »

I think you will see that you do need to ensure the HP fuel pump is timed correctly: https://pmmonline.co.uk/technical/how-t ... itroen-c4/ :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
RichardW
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Joined: 07 Aug 2002, 17:12
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Re: Timing belt change

Unread post by RichardW »

It probably doesn't matter as the pump is not timed - but there might be some resonance on the pump vs the cam timing that they have tried to damp out. In what way was it wrong? It should be possible to pin the cam and crank and then rotate the pump to the timing position and fit the belt. If the timing point was out when you stripped it down, then someone was there before and did it wrong previously so it was running already with it out!
Richard W