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Old 03-26-2014, 05:33 PM
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Quote:
Originally Posted by 300SD90 View Post
There's a guy who has been very helpful that has very good YouTube videos on pop testing and cleaning injectors for the OM617. He told me that my pressure seems to continue to rise even after I've stopped pumping, and he thinks it's a result of going from 1/4" fittings up to 3/8" fittings. I ordered the right fittings and will hopefully have an update tomorrow.
Fitting size will have absolutely no effect on pressure. Liquids are non-compressible so the pressure will be the same regardless the line (or fitting) size. If you check the orifice size on the gauge it is going to be a lot smaller than 1/4". If it were to have an effect, you would need to order a gauge with the inlet size the same as the line size (or tank size, if you were checking the pressure of a tank).

Line size does have an effect on flow rates, but I can assure you that the orifice on the nozzle is much, much smaller than the line size going to the injector.
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