Welsh_ads Posted March 29, 2023 Share Posted March 29, 2023 Hi guys and please welcome me into the Audi community. Hello to everyone 😂 I’ve got a slight issue with an Audi a4 2.0 tdi with engine code CAG year 2010 now this is what has happened drove the car fine no problems at all then turned it off went shopping came back out and wouldn’t start so had the AA come out and have a look and said the fuel pump in the tank isn’t pumping any diesel so fast forward a couple of days, we fitting another pump in the tank which is pumping out fuel but the car still won’t start, we’ve also replaced the fuel filters and got fuel up to the HPFP heres the things I’ve currently checked fuel getting to HPFP theres no filling in the HPFP no check engine light ive got fuel to the injectors i used a duty meter for the injectors when cranking and got 8.3% duty checked the throttle flap wasn’t stuck shut is there anything else I should be looking at? I do really appreciate any help on this one Thanks in advance Quote Link to comment Share on other sites More sharing options...
audia4b5kev Posted March 29, 2023 Share Posted March 29, 2023 camshaft or crank sensor be iffy bud 1 Quote Link to comment Share on other sites More sharing options...
Welsh_ads Posted March 29, 2023 Author Share Posted March 29, 2023 I’ve just got the vcds on it and when cranking here’s the readings Crank position sensor reading 224rpm cam sensor reading 107 rpm would this look correct? thanks Quote Link to comment Share on other sites More sharing options...
Steve Q Posted April 1, 2023 Share Posted April 1, 2023 Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 Not sure what the figures should be for the cam or crank sensors. Another thought isn't there a fuel pump module? Could this be at fault? Quote Link to comment Share on other sites More sharing options...
alpha omega Posted April 12, 2023 Share Posted April 12, 2023 On 3/29/2023 at 4:20 PM, Welsh_ads said: Hi guys and please welcome me into the Audi community. Hello to everyone 😂 I’ve got a slight issue with an Audi a4 2.0 tdi with engine code CAG year 2010 now this is what has happened drove the car fine no problems at all then turned it off went shopping came back out and wouldn’t start so had the AA come out and have a look and said the fuel pump in the tank isn’t pumping any diesel so fast forward a couple of days, we fitting another pump in the tank which is pumping out fuel but the car still won’t start, we’ve also replaced the fuel filters and got fuel up to the HPFP heres the things I’ve currently checked fuel getting to HPFP theres no filling in the HPFP no check engine light ive got fuel to the injectors i used a duty meter for the injectors when cranking and got 8.3% duty checked the throttle flap wasn’t stuck shut is there anything else I should be looking at? I do really appreciate any help on this one Thanks in advance hi,do you have an update on this please hope you got sorted. thanks Quote Link to comment Share on other sites More sharing options...
Magnet Posted April 12, 2023 Share Posted April 12, 2023 Very good question Stephen. Regrettably, our homeland original poster, hasn’t returned to the forum since the day he first joined. Will we ever know? Kind regards, Gareth. 1 Quote Link to comment Share on other sites More sharing options...
Welsh_ads Posted April 12, 2023 Author Share Posted April 12, 2023 8 hours ago, alpha omega said: hi,do you have an update on this please hope you got sorted. thanks Hi yes it appeared to have 2 failed injectors which didn’t bring up any codes on the vcds. bought 2 injectors which supposedly were tested and good but 1 was faulty, the car runs now but has a slightly misfire and still smells but thinking of driving the car to see if the ecu learn the driving characteristics and sorts itself out do you have a similar issue? Maybe I can help 1 Quote Link to comment Share on other sites More sharing options...
Welsh_ads Posted April 12, 2023 Author Share Posted April 12, 2023 8 hours ago, Magnet said: Very good question Stephen. Regrettably, our homeland original poster, hasn’t returned to the forum since the day he first joined. Will we ever know? Kind regards, Gareth. Hi Gareth I may not of returned due to being busy with work but I will reply to any messages and help when I can, if you are ever stuck on a problem please feel free to message many thanks 👍 2 Quote Link to comment Share on other sites More sharing options...
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