Tappy Posted February 20, 2022 Share Posted February 20, 2022 Hi all, Our 2015 trident has lost boost, If we pump the fuel pump she goes like normal but 5km on she is running like a bucket of poop. Any thoughts would be greatly appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/ Share on other sites More sharing options...
0 JoeH Posted February 20, 2022 Share Posted February 20, 2022 Change your fuel filters? Check suction lines for collapsing? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489838 Share on other sites More sharing options...
0 Onyx610 Posted February 20, 2022 Share Posted February 20, 2022 What makes you think it’s boost pressure and not fuel? Are you having any power steering issues? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489840 Share on other sites More sharing options...
0 Joey Mack Posted February 20, 2022 Share Posted February 20, 2022 is the primer pump leaking when you prime it up? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489842 Share on other sites More sharing options...
0 Tappy Posted February 20, 2022 Author Share Posted February 20, 2022 Fuel filters have been changed, no problem with steering. Priming pump isn't leaking Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489866 Share on other sites More sharing options...
0 Joey Mack Posted February 20, 2022 Share Posted February 20, 2022 ok... so.... is the boost issue, something you are seeing on a dash gauge? or is it in a test screen on a computer? may I suggest putting a pressure gauge into the intake manifold. I believe there is a small square headed plug in the intake manifold. install a long hose there with a gauge on the other end and take it in the cab with you and go for a drive.. I have one made up with a 12" hose so I can do just that.... jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489868 Share on other sites More sharing options...
0 Tappy Posted February 20, 2022 Author Share Posted February 20, 2022 Yes the gauge drops out. We will try what your saying Thank you Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489869 Share on other sites More sharing options...
0 Joey Mack Posted February 20, 2022 Share Posted February 20, 2022 if youre gauge shows proper boost, then I would look at the sensor and the wiring.. these EECU's are very sensitive and also piece's of SH!T... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489870 Share on other sites More sharing options...
0 Tappy Posted February 20, 2022 Author Share Posted February 20, 2022 Its not the gauge we don't believe, it just looses power and the gauge show that. Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489871 Share on other sites More sharing options...
0 Onyx610 Posted February 20, 2022 Share Posted February 20, 2022 Problem with this is that it could be a number of things egr valve, turbo actuator, sensors, etc. You can go ahead check the basics like boost leaks and fuel pressure…but without PTT on these engines your pretty much at a loss. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489886 Share on other sites More sharing options...
0 Joey Mack Posted February 20, 2022 Share Posted February 20, 2022 Just to clarify, I meant the hand held gauge.. sorry... if there is a difference in boost readings from the dash gauge and the hand held gauge, then I would check the sensor.. and I see I posted that my test hose is 12 inches long, I meant 12 feet.. sorry again... sometimes I type too fast.. jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489902 Share on other sites More sharing options...
0 Tappy Posted February 21, 2022 Author Share Posted February 21, 2022 Onyx610 it's been to a mack dealer workshop put on the computer and driven and there is no faults to significantly tell us the problem. Sensors were changed out and still the same problem. It's frustrating. Jojo thank you. Last night we put a camera in the full tank to see if there were any floaties it was 99% clean. I'm going to use the camera on the fuel line to check for any unwanted items. It's the most frustrating thing. Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489920 Share on other sites More sharing options...
0 Popular Post JoeH Posted February 21, 2022 Popular Post Share Posted February 21, 2022 I have heard that sometimes the foil from an additive bottle gets into the fuel tank and will clog the fuel suction line intermittently... 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489929 Share on other sites More sharing options...
0 Joey Mack Posted February 21, 2022 Share Posted February 21, 2022 Yes JoeH it sure does... seen it a few times. Tappy, I literally bought a 2 camera security system from harbor frieght, and mounted it under the hood with one of thier cheap ass flash lights using their zipties, to watch the EGR valve on a series 60 14 liter detroit, to check EGR operation..... It worked!! I could watch the EGR valve operate as I drove the truck... I had the wires run into the cab, hooked the little screen to an inverter that plugged into the cig lighter plug, and away I went.. Jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-489964 Share on other sites More sharing options...
0 Tappy Posted February 28, 2022 Author Share Posted February 28, 2022 JoeH we have put a camera in the tank and there was a couple of little black pieces of shit, we have now sucked that out of the tank. Joey Mack we are hoping to run the camera. With all your help we hope to get to the bottom of this irritating problem. Quote Link to comment https://www.bigmacktrucks.com/topic/69262-boost-issue/#findComment-490551 Share on other sites More sharing options...
Question
Tappy
Hi all,
Our 2015 trident has lost boost,
If we pump the fuel pump she goes like normal but 5km on she is running like a bucket of poop.
Any thoughts would be greatly appreciated
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https://www.bigmacktrucks.com/topic/69262-boost-issue/Share on other sites
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