How do I isolate a cylinder?

[jtomasik]

If I want to track down a firing or mechanical noise issue, how can I turn off the injector (or shut down fuel) to an individual cylinder? Back in my diesel repair days, it usually only required cracking fuel lines. But, I know that isn't the case with my '99 Powerstroke.

[slimbo5]

only way is with a scanner capable of doing cylinder contribution tests or actually unplugging the injector

[djsdiesel]

they make an injector analyzer, but pretty expensive just to use on one truck, best thing take it to a ford garage they should have one, should only charge 1.3 hours to diag. pretty expensive but cheaper than buying an analyzer or scanner capable of doing a contribution test. I paid 2500 for my scanner, and am currently building an analyzer but not finished with it yet.

[jtomasik]

Ok. Thanks, guys.

[mschn99]

Originally Posted by djsdiesel

they make an injector analyzer, but pretty expensive just to use on one truck, best thing take it to a ford garage they should have one, should only charge 1.3 hours to diag. pretty expensive but cheaper than buying an analyzer or scanner capable of doing a contribution test. I paid 2500 for my scanner, and am currently building an analyzer but not finished with it yet.

i actually built my own switched kill box as well DJ since the shop was too cheap to buy one for me

[djsdiesel]

Ya I've got the harness buiilt just trying to find some toggle switches and a box to mount them in so it looks good and functions well. Want it look like an actual tool not just abunch of wires. I can be kinda picky