Supermutt Posted July 16, 2023 Share Posted July 16, 2023 Engine is a full mechanical E7 350. It is running a bit ruff with a bit of vibration. I cracked the injector lines at each delivery valve on the pump. I did not find a dead or non reactive cylinder but what I did notice is air bubbles coming out with the fuel when cracked open a bit ? Not sure but I don’t think I should be getting air bubbles. The truck will start ok after sitting for a week so I don’t think it’s sucking air. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/73057-bosh-p7100-air-bubbles/ Share on other sites More sharing options...
BOBWhite Posted July 16, 2023 Share Posted July 16, 2023 Clear plastic lines on the inlet and return fuel lines is the best way to check for air intrusion. When you crack a line it could be sucking some air in with the loose fitting making it look like bubbles since diesel kind of acts like bubble soap. Best of luck! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73057-bosh-p7100-air-bubbles/#findComment-534949 Share on other sites More sharing options...
Supermutt Posted July 16, 2023 Author Share Posted July 16, 2023 May sound stupid, but I am trying to figure out how I can add in a clear line on the suction side. I am guessing the same for the return line. As far as I know the only return I have goes back to the pump. Great idea. I just need to figure out how to make it happen. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/73057-bosh-p7100-air-bubbles/#findComment-534950 Share on other sites More sharing options...
Joey Mack Posted July 16, 2023 Share Posted July 16, 2023 (edited) maybe get some J.I.C. fittings that fit the lines, #8 I think, with male threads on the other end, and then go to Lowes/ Home Depot,, to the plumping section and look at their rolled hose options. I like your idea...... Edited July 16, 2023 by Joey Mack Pour sperring 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73057-bosh-p7100-air-bubbles/#findComment-534954 Share on other sites More sharing options...
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