Question about 2006 Fiat X1/9

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I have a Diesel Fiat Punto 1.3 multi jet 2003. I cant start the car it keeps turning over and over and will not start. Ive had the pump and injectors checked, changed the starter motor, had new glow plugs. The car has been put on diagnostic machine, when the car is being tuned over its showing an intermitent fault showing the RPM signal is jumping to 0 to 300. i have changed camshaft and crackshaft censor. Please can someone help me ive spent a fortune?

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First I would check to make sure you have the proper fuel pressure at the pump - you should have 2 pumps - one that delivers from the tank, and a high pressure pump for the injectors. Make sure that both are delivering properly - you may need to prime the pumps for quite some time if air got into the lines. Also make sure the cam / crank sensors wiring has no corrosion and is making proper contact. Between 0 to 300/400rpm the signal can be slightly erratic until the engine is started so I would not worry too much about that.

Posted on Mar 15, 2011

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  • yvetteajones Mar 15, 2011

    All what you have mentioned has been checked and are working fine. When trying to start the car it will start after turning over and over and will sometimes take up to 5 minutes to start. Also, it is exactly the same when the car is warm, it will start if you turn the engine off and turn back on straight it will start straight away but if you leave it 2-3 minutes it will turn over and over again. Any more suggestions?

  • Andrew Smith
    Andrew Smith Mar 15, 2011

    It sounds like fuel pressure is leaking down. If this is a returnless fuel system, there may be a leaking check valve letting fuel pressure bleed down. If it is a return system it too could be leaking down - check if the fuel filter has an integrated check valve - you might need to replace the fuel filter if it has that check valve.

  • gavin_brooke
    gavin_brooke Nov 02, 2012

    i have the same promlem and ive replaced the air flow meter,egr valve and the high pressure pump and its still the same

  • p_gemmell6
    p_gemmell6 Jan 09, 2013

    fuel pump replaced but still the same, any ideas


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Fiat punto multijet 1.3 diesel will not start

Posted on Jan 09, 2013


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