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  #1  
Old 06-08-2021, 11:14 AM
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Join Date: Sep 2018
Location: Temecula
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Dieselpumpuk Injection Pump

We installed Luke's 7.75mm pump to OM617 and timed it according to the punch mark on the flywheel as instructed. Car cannot start without mechanical priming and will not idle. This is a well respected professional shop and we are not getting any solid further direction from Dieselpumpuk.
Has anyone had experience installing these?

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Old 06-08-2021, 12:00 PM
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Are you sure you're timed on the compression stroke and not the exhaust stroke?
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  #3  
Old 06-09-2021, 08:57 AM
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Funny you mention that, which is what happened.
Runs strong, but way, way too rich. Back it down and it will not start.
Anyone have experience?
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  #4  
Old 06-09-2021, 10:16 AM
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What exactly did you "turn down"? Hopefully not the governor adjustments internally. These massive pumps should have an external ALDA of some sort which you can adjust if necessary. You are running an upgraded huge turbo (hopefully with an intercooler) to supply enough air for that pump right? Black smoke means you need more air.
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  #5  
Old 06-10-2021, 01:27 AM
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No nothing internally. Just the external adjustments as per supplied videos and linked videos. Pump is supposed to be runnable as provided and expand with larger turbo. Overly lack smoke, elevated EGT. Returned to OEM pump.
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  #6  
Old 06-10-2021, 10:28 AM
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I don't see how any 7.75mm pump tuned in any capacity would EVER work with the stock turbo. It was barely adequate for the stock pump.
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  #7  
Old 06-11-2021, 03:09 AM
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Another example of Dieselpumpuk's well known poor customer support quality.

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