Question about 2001 Audi A6

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Audi a6 with 2.4 engine

All electric & security ok but not starting only cranking

Posted by rana imran on

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Johnny Johnny

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  • 37 Answers

Hello.

Can be alot of causes. Most common:

Egr clap closed - doesn t allow air intake - car also blows black smoke while cranking.

Fuel intake
- low pressure fuel pump - located inside the fuel tank - may be burnt
- high pressure fuel pump - engine bay - also may be burnt
- not enough fuel inside the tank
- fuel leaks before reaching injectors

etc

Hope it helps

Posted on Jul 23, 2014

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Anonymous

  • 62 Answers

SOURCE: I am Having the same problem can anyone tell me

If you can physically see there's no spark at the sparkplugs then you need to check the HT leads(spark plug leads), resistance should be no more than 14 Kilo Ohms per foot of cable! If they're ok check the coil pack for signs of arcing to earth(very common in these cars!) and if they are getting a 12 Volt supply from the ignition, if ok then check the amplifier which is screwed to the top of the air filter housing to see whether voltage is getting through from there, if ok check the crankshaft position sensor! (Also a common fault on these) Has your vehicle got an immobilizer? These when activated, disable the engine control unit and stop the signals from getting to your ignition amplifier module!

Posted on Oct 09, 2010

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