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  #28  
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They are 100ml bottles. I didn't time the test. I'd guess about 5 or 10 minutes.

I was more looking for a difference than a leakage rate. I was being factious about having 4 stuffed injectors. If 4 had excess bypass leakage then it wouldn't reach rail start pressure.

I've also vacuum primed the fuel system and tightened the clamps on all the rubber hoses. It starts better and I've not noticed any more rough running. I suspect a tiny air leak.
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Originally Posted by JeanLuke View Post
That's the wrong injector. The correct one is $375:
https://www.ebay.com.au/itm/Mercedes...E/252918991736
Jeanluke, both injectors share the same OE part numbers. You're just paying more for the second listing.
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One is Bosch 0445110203 and the other 0445110189. They're the same seller. I contacted them with the number off my existing injectors and they referred me to the 0445110203. This was corroborated by another injector specialist I contacted. Apparently the two injectors are not quite the same, but nobody can tell me exactly how they differ. I *suspect* it's in the nozzle shape/size. The trap is that they are dimensionally interchangeable.
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On the Mercedes forums, they mention there are slight variations of Injector part numbers based on the level of coding required and nozzle type.
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Quote:
Originally Posted by JeanLuke View Post
Either a good result, or I have four stuffed injectors.
I would think for 5-10 mins that would be a reasonable amount of leak back.
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Quote:
Originally Posted by gibrate1 View Post
On the Mercedes forums, they mention there are slight variations of Injector part numbers based on the level of coding required and nozzle type.
The right one for the 2.7 CRD WG is 0445110203 or 0445110097. The 0445110189 is not the right one. It's for Sprinters, Vito's or the 2.8 Cherokee.

The 0445110203 replaced 0445110204 which is what I have now. I'm not sure where the 0445110097 fits the picture - perhaps older WG's?
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#4 was enough to make it surge after idling a bit and to feel exhaust pulses.
But it is quite a bit more difference from #4 to 2, 3 and 5 than it is between any of your injectors.
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I'm booked for a professional diagnosis next week. Tempted as I was to buy a Chinese knock-off DRB tool, I figured having an expert opinion would be worth it before I spend thousands on injectors.
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Are you guys testing when cold or warmed up?

My trim values vary dependent on temp as well as the surging ect.
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