Must say it’s a beautiful car in the flesh
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Engine Cut Out Around 4500 RPM
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Originally posted by newsh View PostMight be a fake plug or maybe lean running caused by fuel pressure dropping.
Can you hook up a fuel pressure gauge? Not easy to see the pressure when driving but a friend got creative with a gauge on the line by the fuel rail, a torch and a GoPro
Have you got a good solid 12V feed to the fuel pump? The original wiring is really thin.
I run my fuel pump direct from the battery under the rear seat via a relay operated from the original wiring.
Next I swapped out the injectors for a known good set and went for a test drive, noting that I have already changed the spark plugs. Unfortunately, it's the same.
As much as I don't ant to hear this, I was talking to the mechanic whilst having the A4 B7 MOT'd and he said it will be your pump. We also discussed the filter to which he noted that it had been on the car for 6 years and that everything has a shelf life. With this in mind I was thinking of rigging up some container in the car and running a pipe direct to the pump to eliminate the tank restricting fuel. That said, the pre pump fuel filter is clean and has been for a couple of months.
So, I need to see what's in the shed and make some device to measure fuel pressure. Where do you gents get your Bosch 044 pumps from? I thought about e-bay but there is so much none genuine stuff on there these days so I want a reliable source without it costing the earth?Last edited by steverrquattro; 5 September 2021, 15:25.
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Bought my "genuine" Bosch pump from KMS on ebay. Failed after 2 years and 1k miles with exactly your symptoms. KMS were very unhelpful and declined a refund stating it was over a year old. I now have a 25 yr old RS2 pump fitted and it's working perfectly.Nothelle S2 Avant
Black Ur project
Ocianic Ur project gone
S2 Coupe project gone
Urs6 plus project gone
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Not fitted the pump yet and before I decide to have a can of petrol floating around in the back feeding the pump directly, I thought I’d check for blockages. So clamped the pipe and then disconnected it, put the air line in and removed the clamp. Seven squirts of compressed air with the fuel tank cap removed, re clamp and then fitted the pipe back on.
Several minutes later and I’m on a shakedown. I can only say OMG and it’s FAF!
The downside is that I’m going to have to take the tank out and clean it. Maybe time to get an alloy one made.
It’s certainly been a journey (12 years) to get this and other things sorted but happy now to be moving onto the next thing that breaks or needs repairing.
Thanks for everyone’s help and nice to close a thread off.
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Originally posted by steverrquattro View PostNot fitted the pump yet and before I decide to have a can of petrol floating around in the back feeding the pump directly, I thought I’d check for blockages. So clamped the pipe and then disconnected it, put the air line in and removed the clamp. Seven squirts of compressed air with the fuel tank cap removed, re clamp and then fitted the pipe back on.
Several minutes later and I’m on a shakedown. I can only say OMG and it’s FAF!
The downside is that I’m going to have to take the tank out and clean it. Maybe time to get an alloy one made.
It’s certainly been a journey (12 years) to get this and other things sorted but happy now to be moving onto the next thing that breaks or needs repairing.
Thanks for everyone’s help and nice to close a thread off.
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Great news Steve!
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