Injector port size
 

I’m looking to get a compression tester. Does anyone know the size of injector ports for the 5.9? Are they 24mm? Is that the same as older 80’s Mercedes? Is there a difference in between the 93 and 94’s? All I know is my 93 takes a 17mm wrench on the injector line nuts, and my 94 takes a 19mm. I wonder if this one will work from Harbor Freight?
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DIESEL ENGINE COMPRESSION TESTER

Designed to check compression on most domestic and foreign diesel engines.
· Quick-connect adapter
· Reads pressure from 0 to 1000 PSI
· 2-9/16" diameter gauge
· Thumb button air release
Comes with adapters for GM, Ford, Lincoln, Isuzu, Mercedes Benz, Kubota, Toyota, Volkswagen, Peugeot

ITEM 93644-0VGA
$24.99