Dieselfixer Posted January 18, 2018 Share Posted January 18, 2018 Hi all I am having a problem with my 06 CHN613 with a 460 I had 2 broken exhaust manifold studs so I removed the manifold and replaced the studs. Put it all back together with new fuel lines and now I have a misfire. I crack open each fuel line at the EUP and all is firing except # 1 and I have a lot of air in the fuel at that line that does not bleed out. If I bleed it out with the engine off it will bleed and steady fuel will come out but with the engine running # 1 has a bunch of air. It was running fine before I took it apart for the manifold stud repair. Any ideas will be appreciated. Quote Link to comment Share on other sites More sharing options...
fjh Posted January 18, 2018 Share Posted January 18, 2018 If the miss continues you will have to replace the injector ! this situation happens more often than you would think! some rust or dirt from removing the line has entered the injector and it has now jam it up! By the way your supposed replace all the injection lines for your repair to be mack conforming JUST SAYIN! Quote Link to comment Share on other sites More sharing options...
Dieselfixer Posted January 18, 2018 Author Share Posted January 18, 2018 I did replace all $700.00 worth of lines. I think I'm going to take it for a ride and see if it clears up. # Quote Link to comment Share on other sites More sharing options...
fjh Posted January 18, 2018 Share Posted January 18, 2018 Yup lucky you 700 bucks later and now likely an injector be there done that! Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted January 19, 2018 Share Posted January 19, 2018 (edited) Bleed the line at the head side. Stubborn suckers with CCRS injectors. The book tells you not to bleed at head cause it will create the illusion of a leaking line days later as it weeps and puts fuel close to the manifold, but sometimes it works better. Should have bled at run-in......still have to try it. Edited January 19, 2018 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Dieselfixer Posted January 19, 2018 Author Share Posted January 19, 2018 Took it for a ride and it cleared up and is running as it should. Thanks all for the replies. Quote Link to comment Share on other sites More sharing options...
fjh Posted January 19, 2018 Share Posted January 19, 2018 Lucky dog! Quote Link to comment Share on other sites More sharing options...
turckster Posted January 22, 2018 Share Posted January 22, 2018 Seen this many times and almost every time they clear up after a road test. Quote Link to comment Share on other sites More sharing options...
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