Bumbog Posted July 30, 2018 Share Posted July 30, 2018 Cxu613. Just noticed yesterday I went to start the truck and it took two attempts to start. First time it’s done that I have 526035 miles on it . Once started it drives fine in fact iam hauling 45,000lbs to Wyoming and it’s done just great now iam parked at truck stop and I let it idle for a hour and turned it off . I went to start it and it did it again hard to start. Since the beginning if I tap the key it would fire right up now it seems in the last two days it’s struggling. I called the dealer and right off the bat he says oh you sound like you need 6 injectors . Is there anything I can do to troubleshoot this instead of just throwing down 6 grand and hoping the dealer was right ?? Quote Link to comment https://www.bigmacktrucks.com/topic/53942-hard-start-drives-great/ Share on other sites More sharing options...
fjh Posted July 30, 2018 Share Posted July 30, 2018 (edited) First off year of the vehicle helps to identify closer what we’re dealing with! Second if the engine is a red engine your dealer is likely correct. 2 options 6000 in repairs or set fire to it and collect the insurance.😠 Edited July 30, 2018 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/53942-hard-start-drives-great/#findComment-403344 Share on other sites More sharing options...
fjh Posted July 30, 2018 Share Posted July 30, 2018 I have one other thought and question is your clutch brake working? If not. Check to see it hasn’t broken and taken out the timing sensor on the flywheel just something to look for Quote Link to comment https://www.bigmacktrucks.com/topic/53942-hard-start-drives-great/#findComment-403345 Share on other sites More sharing options...
Rockwell Posted July 30, 2018 Share Posted July 30, 2018 From all my research, it seems this is a classic symptom of injectors/cups failing. The failure creates a situation where you lose prime. I will also tell you I've been nursing this problem for months. Other than difficulty starting, the truck runs strong. Sometimes I will even have to use the primer pump for 4 or 5 pumps to get life. Point is, at least for me, it is not $6K immediately! Seems you can nurse it along long enough to get your bucks in a row. I'm sure once cooler weather sets in, it may become a more immediate repair. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/53942-hard-start-drives-great/#findComment-403347 Share on other sites More sharing options...
Popular Post turckster Posted August 3, 2018 Popular Post Share Posted August 3, 2018 Check by the fuel hand pump on the fuel filter base, there is a little plastic cap. When you pump the hand primer does fuel bubble out around the cap? If so then replace the cap, it is causing fuel drain back and air in the fuel. If it is dry, remove the fuel tank caps and check for air in the fuel return. let the engine idle for 5 or so min. and then check. If you have a constant stream or big blobs of bubbles every few seconds then you more than likely have injector/cup issues. When the injectors are removed, if 3 or more injectors show leakage then it is best to replace all injectors and cups. If only one or two injectors are leaking and all others show a good seal then only the bad injector(s) should be replaced. If you have a lot of mileage on the set then its up to you to decide a complete kit or individual injectors. I think the complete kits are priced in a way that is cheaper to replace a set than two or more injectors. 3 Quote Link to comment https://www.bigmacktrucks.com/topic/53942-hard-start-drives-great/#findComment-403579 Share on other sites More sharing options...
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