yungupgrade Posted July 21, 2022 Share Posted July 21, 2022 So I was digging around behind the seat in my MJ and I found a box of 6 ford 5.0 injectors. I forgot I had them and then remembered the previous owner just said they were "dirty injectors". I had read some threads saying these ones worked with positive results. Now I know the 746 Volvo ones are supposed to be the best but these were free and they're also a 4 hole design. Is there anyway I can clean these myself or do I need to take/send them to someone to have them refurbished? Would the cost of doing this be more so than just buying a brand new set of injectors? Link to comment Share on other sites More sharing options...
eaglescout526 Posted July 21, 2022 Share Posted July 21, 2022 I’ve heard of people ultrasonic cleaning injectors. Link to comment Share on other sites More sharing options...
Limeyjeeper Posted July 21, 2022 Share Posted July 21, 2022 If they are 24lb they are way too big for a stock 4.0. You can get them cleaned and tested for about $100 Link to comment Share on other sites More sharing options...
yungupgrade Posted July 21, 2022 Author Share Posted July 21, 2022 8 minutes ago, Limeyjeeper said: If they are 24lb they are way too big for a stock 4.0. You can get them cleaned and tested for about $100 These end in 943, 24lb ends in 947. Regardless, from what you said it's probably cheaper just to buy a new set of 749's Link to comment Share on other sites More sharing options...
yungupgrade Posted July 21, 2022 Author Share Posted July 21, 2022 20 minutes ago, eaglescout526 said: I’ve heard of people ultrasonic cleaning injectors. How would I be able to test the flow rate? Link to comment Share on other sites More sharing options...
Limeyjeeper Posted July 21, 2022 Share Posted July 21, 2022 There are loads of companies you can send the injectors to. They ultrasonically clean them and test the flow rate for each injector. Orange Ford injectors are normally 19lb so they would work well in a stock 4.0. I have used these guys. $17 per injector for an ultrasonic clean and test https://injectorrepair.com Link to comment Share on other sites More sharing options...
yungupgrade Posted July 21, 2022 Author Share Posted July 21, 2022 42 minutes ago, Limeyjeeper said: There are loads of companies you can send the injectors to. They ultrasonically clean them and test the flow rate for each injector. Orange Ford injectors are normally 19lb so they would work well in a stock 4.0. I have used these guys. $17 per injector for an ultrasonic clean and test https://injectorrepair.com Would it be worth it to throw them in as is and see how my truck runs? I think I have the stock injectors in currently Link to comment Share on other sites More sharing options...
Limeyjeeper Posted July 21, 2022 Share Posted July 21, 2022 I would you are gonna know real quick if they are clogged. Takes a lot to clog an injector. Link to comment Share on other sites More sharing options...
ghetdjc320 Posted July 21, 2022 Share Posted July 21, 2022 Keep in mind most flow rates are measured at 3 bar (43.5psi). The stock MJ system should be 19lbs at 39psi. The only really advantage on a stock engine would be better atomization if the injector has multiple holes. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 21, 2022 Share Posted July 21, 2022 This is where something free costs a lot in time spent. This guy on Cherokee Forum reconditions injectors and supplies a copy of the flow results. trevor.skankfootracing@gmail.com Link to comment Share on other sites More sharing options...
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