How to check ISX air in fuel return line?
Remove suction line right at the fuel manifold and run a test line to the tank to by pass all the fuel lines, run the engine and see if the fuel clears up. Thanks I tried that and still have the same amount of air in fuel. Combustion pressure is leaking up into one of the injectors. ISX injectors have a little check valve inside to prevent this.
When did the Cummins ISX engine start having problems?
In 2008, Cummins began noticing the SCR system experienced failing revolving parts, interfering with the engine’s horsepower. Clogged inlets came about in 2010 when recirculation was occurring, also affecting HP.
How does the ISX engine improve fuel economy?
The ECM can activate each fuel injector up to five times per combustion cycle. The single camshaft improvement creates a better fuel economy and reduces emissions to stay parallel with EPA standards. By 2013, the ISX gained on-board diagnostics to track the engine’s emissions. This change increased fuel efficiency compared to previous versions.
What kind of particulate filter does an ISX engine have?
Particulate filter: An ISX engine has a fully integrated particulate filter for uncompromised performance by reducing particulate matter. Single overhead camshaft: Versions made after 2010 have a single camshaft system with a common rail fuel operation that relies on piston pumps to inject diesel.
Why does my Cummins ISX air keep leaking?
Combustion pressure is leaking up into one of the injectors. ISX injectors have a little check valve inside to prevent this. It does happen the check valve fails and you get this problem. Pappa Bear Thanks this.
Where is the return line in a Cummins ISX?
I unhooked the supply line between the primary filter and the engine and ran it out of a bucket. Same amount of air in the return line. Also fuel returns quickly to the tank after engine shutdown. When I unhooked both lines I didn’t get one drop of fuel.
What kind of boost does a 06 ISX get?
Hello, 06 ISX has a noise and vibration under a hard pull with some smoke. It also only gets 30 pounds of boost when it acts up like this. It will normally go up to 38. I hooked a clear 5/8 line to the fuel return and ran it into a bucket. At idle (800 rpm) the line is half air and half fuel – foamy mix.