Supermutt Posted July 25, 2023 Share Posted July 25, 2023 I just pulled these injectors from my 96 DM688S with a e7 350. Comments welcome. Injector No. KBAL 137 P 26 571. I see the same no. for a e7 400 except for the 571. Iam not super familiar with the injector numbers. Does this 350 have 400 injectors ? I also noticed that the injectors have 2 green paint marks on the top ? Would these marks be something original from the factory ? I have never seen that before on replacement injectors Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/ Share on other sites More sharing options...
JoeH Posted July 25, 2023 Share Posted July 25, 2023 (edited) Factories typically put paint marks on during assembly to indicate they've checked/torqued bolt down to spec. Could be all that is. If it's a Remack engine or was rebuilt by someone in the past it could be the reassembler's Quality Check mark. Edited July 25, 2023 by JoeH 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/#findComment-535585 Share on other sites More sharing options...
JoeH Posted July 25, 2023 Share Posted July 25, 2023 Also I think the "571" digits will be your part number differential between the different HP ratings. Seems you indicate your "571" part number is different from the 400's part number. This you probably don't have 400hp injectors. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/#findComment-535588 Share on other sites More sharing options...
terry Posted July 25, 2023 Share Posted July 25, 2023 I'll bet the only difference on the injectors is the snap pressure. terry 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/#findComment-535595 Share on other sites More sharing options...
Supermutt Posted July 25, 2023 Author Share Posted July 25, 2023 I dropped them off to be tested a a Bosch pump shop. The guy there said the green paint marks were a QC mark from the bosh factory. They are most likely the original injectors. Pretty sure they are going to be nfg. 3 out of the 6 definitely had bad o-rigs as they were soaked with fuel and leaking out the head. Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/#findComment-535598 Share on other sites More sharing options...
fjh Posted July 26, 2023 Share Posted July 26, 2023 19 hours ago, Supermutt said: I dropped them off to be tested a a Bosch pump shop. The guy there said the green paint marks were a QC mark from the bosh factory. They are most likely the original injectors. Pretty sure they are going to be nfg. 3 out of the 6 definitely had bad o-rigs as they were soaked with fuel and leaking out the head. You should be changing your oil then!!! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/73092-1996-e7-350-full-mechanical-injectors/#findComment-535656 Share on other sites More sharing options...
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