Elitedownunder Posted December 12, 2016 Share Posted December 12, 2016 Guys, My E7 454 VMAC is running quite well now after the other problems were sorted but now it makes a tweeting noise when you push the accel and the boost comes in then if you back it off or coast under boost no noise but push the boost and its a TWEETING noise kinda like a whistle. Any thoughts? Quote Link to comment https://www.bigmacktrucks.com/topic/47992-tweeting-sound/ Share on other sites More sharing options...
terry Posted December 12, 2016 Share Posted December 12, 2016 Boost leak ? Quote Link to comment https://www.bigmacktrucks.com/topic/47992-tweeting-sound/#findComment-354813 Share on other sites More sharing options...
fjh Posted December 12, 2016 Share Posted December 12, 2016 Go around and tighten ALL the hose clamps on the charge air and compressor inlet pipes 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47992-tweeting-sound/#findComment-354835 Share on other sites More sharing options...
hatcity Posted December 12, 2016 Share Posted December 12, 2016 exhaust leak-look for soot marks on manifold or around gasket area Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/47992-tweeting-sound/#findComment-354840 Share on other sites More sharing options...
Elitedownunder Posted December 20, 2016 Author Share Posted December 20, 2016 Thanks guys was the turbo gasket at manifold. Quote Link to comment https://www.bigmacktrucks.com/topic/47992-tweeting-sound/#findComment-355613 Share on other sites More sharing options...
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