So do I have this right??

[tree98]

Just trying to understand exactly what's involved in troubleshooting the high pressure fuel system if it won't pass the insite leakdown test.

First thing would be replace the banjo bolt that holds the relief valve on the end of the rail with a solid bolt and re run the leakdown test. If it now passes, the relief is bad.

If it still does not pass, you then cap off an injector with the cummins caps that are made for this purpose. Start the truck and run it on 5 cylinder's re run the leakdown test. If it passes that means the injector you capped off is bad.

If it still won't pass do you hook that injector back up to the rail and cap off the next one and repeat the leakdown test and keep going down the rail like that?

In this thread Mr hagg says he has all 6 caps so he can cap off as many injectors as needed, if you capped off all 6 injectors how would you be able to run the leakdown test? And you couldn't possibly have 6 bad injectors anyway.

http://rawze.com/forums/showthread.php?tid=6588

What am I missing here?