TD4 injector Leak back amounts in ml?

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comeinhandy

Member
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74
Location
South uk
I’m looking to find how much diesel should leak back from the injectors at idle. The couple of results I’ve found on this forum are one at 0.46 ml / second. But another chap reported 0.018ml/ sec.
I’ve just tested mine at 0.14 ml/ sec so I’m inclined to think the second result is maybe off by a factor of 10.

Has anyone else measured leakback?
 
I’m looking to find how much diesel should leak back from the injectors at idle. The couple of results I’ve found on this forum are one at 0.46 ml / second. But another chap reported 0.018ml/ sec.
I’ve just tested mine at 0.14 ml/ sec so I’m inclined to think the second result is maybe off by a factor of 10.

Has anyone else measured leakback?
I’ve just seen a youtube video of a leakback test on Bosch injectors on another engine and he said if its less than 40ml in a minute = 0.67 ml/sec then it’s ok.
 
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