I have nothing against breaking in new Injector Nozzles and then having them Pop Tested; but, no place I have ever worked (during 18 years) deemed this necessary for either new or rebuilt nozzles.

If I did decide to do this it would mean Pop Testing them when they were rebuilt and pulling them out severl K later and Pop Testing them again. Not just exchanging Spray Nozzles for a new one and putting them on the engine without Pop Testing.

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84 300D, 82 Volvo 244Gl Diesel