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+--- Thread: Fuel pressure and restriction test (/showthread.php?tid=5389)
RE: Fuel pressure and restriction test - Lonestar10 - 12-07-2019
well you didnt have vacuum if you took the reading while the elec pump was running it puts out about 10-20psi
RE: Fuel pressure and restriction test - DDlighttruck - 12-07-2019
Cummins didn’t bring that up in the instructions
I guess they assumed idiots weren’t going to be attempting them
RE: Fuel pressure and restriction test - Lonestar10 - 12-07-2019
best way to do any test is start engine let run for a bit so everythings all evened out then do tests that require engine running.
RE: Fuel pressure and restriction test - DDlighttruck - 12-08-2019
(12-07-2019 )Lonestar10 Wrote: best way to do any test is start engine let run for a bit so everythings all evened out then do tests that require engine running.
[attachment=5910]
The truck was warm by the time I got to the shop. I let it run for 20 minutes or so, then tried it again today. It’s still showing pressure there, 3-4 psi
So I don’t know. Maybe another shop has one I can use to double check what I’m seeing