2350 fuel pressure decay Fault code 4726

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2350 fuel pressure decay Fault code 4726

02-25-2021, (Subject: 2350 fuel pressure decay Fault code 4726 )

Post: #13

SemiSweet Offline

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RE: 2350 fuel pressure decay Fault code 4726

4726 code came back today. Did a cylinder cut out test and when I cut out cylinder 5 the fuel knock is completely gone . All other cylinders sound the same. I think I will start the injector return flow test with cylinder 5 and see what happens. I bet the injector is done.

User's Signature: 2015 389 Peterbilt. ISX 550 18speed 3.70 gears

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Messages In This Thread

2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-21-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-24-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Rawze - 02-24-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 03-06-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 02-25-2021

RE: 2350 fuel pressure decay Fault code 4726 - Waterloo - 03-06-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 03-06-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Chamberpains - 03-07-2021,

RE: 2350 fuel pressure decay Fault code 4726 - SemiSweet - 03-07-2021,

RE: 2350 fuel pressure decay Fault code 4726 - Mattman - 03-07-2021,

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