JNM Equipment Posted December 1, 2017 Share Posted December 1, 2017 Hi Guys, I’m troubleshooting my 04 Mack Granite CV713 after I had a bad case of water in diesel. It was spluttering and initially thought it was the filters that were bad. But when I pulled the filters we realized there was a significant amount of water in the diesel. We drained the tank of the contaminated diesel and got clean diesel. We have bled the injectors and changed filters but the truck just keeps rolling. Following that there is evidence of fuel getting to the system, the truck starts with quick start solution briefly but is unable to start on its own - just keeps rolling. Grateful for any any suggestions or insight on this matter. Thanks, Jordan McLean Quote Link to comment Share on other sites More sharing options...
carlotpilot Posted December 1, 2017 Share Posted December 1, 2017 did you check the bad fuel for antifreeze - are you losing coolant ? Quote Link to comment Share on other sites More sharing options...
JNM Equipment Posted December 1, 2017 Author Share Posted December 1, 2017 7 minutes ago, carlotpilot said: did you check the bad fuel for antifreeze - are you losing coolant ? Yes and there’s no significant loss of coolant. Thanks Quote Link to comment Share on other sites More sharing options...
carlotpilot Posted December 1, 2017 Share Posted December 1, 2017 Just now, JNM Equipment said: Yes and there’s no significant loss of coolant. Thanks that kind of rules out what i was thinking - i better let some one else chime in Quote Link to comment Share on other sites More sharing options...
Mackpro Posted December 1, 2017 Share Posted December 1, 2017 Loosen the injector lines one at a time at cylinder head about 3 turns and pump hand primer pump till you get fuel coming out, tighten and repeat on at least 3 lines then try to start, the ASET AI and AC are hard to get air out of fuel system. Quote Link to comment Share on other sites More sharing options...
fjh Posted December 2, 2017 Share Posted December 2, 2017 22 hours ago, Mackpro said: Loosen the injector lines one at a time at cylinder head about 3 turns and pump hand primer pump till you get fuel coming out, tighten and repeat on at least 3 lines then try to start, the ASET AI and AC are hard to get air out of fuel system. What He said! Quote Link to comment Share on other sites More sharing options...
JNM Equipment Posted December 5, 2017 Author Share Posted December 5, 2017 Thanks but still no luck as we’re not getting any signal when we plug in the diagnostic computer to see what’s wrong. Worth mentioning that primer pump is not holding fuel (not getting firm when we pump it) and injector 1 and 6 looks like it’s not getting any fuel. Quote Link to comment Share on other sites More sharing options...
h67st Posted December 5, 2017 Share Posted December 5, 2017 40 minutes ago, JNM Equipment said: Thanks but still no luck as we’re not getting any signal when we plug in the diagnostic computer to see what’s wrong. Worth mentioning that primer pump is not holding fuel (not getting firm when we pump it) and injector 1 and 6 looks like it’s not getting any fuel. Sounds like you may be sucking air...are all the filters tight? Did you have any fuel lines loose when draining it? A loose or cracked fuel line will suck air. Quote Link to comment Share on other sites More sharing options...
JNM Equipment Posted December 6, 2017 Author Share Posted December 6, 2017 Ran back thru lines and all you mentioned seems fine. We noticed that no power from the ECM is going to the injectors nor is there any smoke coming from the exhaust when the truck is rolling. Will run some more electrical test tomorrow and any other suggestions welcomed. Thanks Quote Link to comment Share on other sites More sharing options...
Mackpro Posted December 6, 2017 Share Posted December 6, 2017 Does the engine hours show up in the display on the tach ? If not , the engine ecm is not powering up or the J1939 and other communication lines are down. Quote Link to comment Share on other sites More sharing options...
41chevy Posted December 6, 2017 Share Posted December 6, 2017 13 minutes ago, Mackpro said: Does the engine hours show up in the display on the tach ? If not , the engine ecm is not powering up or the J1939 and other communication lines are down. For my own head, are there any fuses for the ECM"s 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
JNM Equipment Posted December 6, 2017 Author Share Posted December 6, 2017 19 hours ago, Mackpro said: Does the engine hours show up in the display on the tach ? If not , the engine ecm is not powering up or the J1939 and other communication lines are down. Yeah I can confirm the engine hours and mileage is displayed on the tach. Quote Link to comment Share on other sites More sharing options...
br549 Posted December 6, 2017 Share Posted December 6, 2017 install a fuel pressure gauge and check fuel pressure. Quote Link to comment Share on other sites More sharing options...
JNM Equipment Posted January 28, 2018 Author Share Posted January 28, 2018 Well ended up getting another engine control unit and got it reprogrammed to the main ecu. Put both in and the same problem continues to happen. Following that I got the truck diagnosed, we could see that all 6 cylinders are inactive and not receiving fuel. The code FMI 13 PID 91 came up which relates to the throttle sensor. Changed that and the problem is still occurring. Quote Link to comment Share on other sites More sharing options...
Dieseltech740 Posted February 10, 2018 Share Posted February 10, 2018 The truck you are working on, does it have a manual or automatic? Quote Link to comment Share on other sites More sharing options...
fjh Posted February 10, 2018 Share Posted February 10, 2018 Bro go to the red fuel filter and remove the line coming from the tank check the elbow into the filter is not plugged with shit These tend to collect crap Quote Link to comment Share on other sites More sharing options...
JNM Equipment Posted February 17, 2018 Author Share Posted February 17, 2018 I can confirm we checked the fuel lines, all six injector are receiving fuel it’s just not dumping fuel in the cylinders for some reason. It’s a manual granite. I’m in the Cayman Islands in a hard spot at the moment with the truck. Quote Link to comment Share on other sites More sharing options...
Popular Post JNM Equipment Posted March 8, 2018 Author Popular Post Share Posted March 8, 2018 We finally found the root of the problem! The contaminated diesel damaged all 6 of the injector fuel pumps. Changed them out and the truck starts. 3 Quote Link to comment Share on other sites More sharing options...
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