@davesautocenter: Duramax mysterious engine noise. What is best diagnostic course of action? #autorepair #duramax #autoshop #carrepair

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Wednesday 15 November 2023 03:07:02 GMT
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stillpaddyp
Pranger :
Give it a tune, put it on a dyno, after a couple pulls you’ll know what it was.
2023-11-17 04:03:43
1434
jaxxxx03
Jackson Stevens :
i know what it is, it’s a chevy
2023-11-15 03:12:24
1152
bitgriffin
Bit Griffin :
rocker arm tip broke off
2023-11-15 03:34:10
252
jamesenevoldsen
James Enevoldsen :
as a heavy duty mechanic the way you explained it relating to a doctor is spot on
2023-11-15 03:31:03
1129
nashmadder
Matt :
The real depressing thing here, it’s a 2022 w/ not so many miles with a possible expensive repair. That is what sucks with all modern diesels.
2023-11-15 06:58:21
211
caseykuntz
casey kuntz :
the rocker arm tips are brazed on. the braze broke on one of the arms. not very common but it happens on the l5p
2023-11-15 03:27:11
514
itsjasonmilliken
Jason Milliken :
What was the outcome?
2023-11-16 14:16:43
2
337speed
Jay Thomas :
Gotta be a hotshot truck with those miles in a year😂
2023-11-15 04:27:45
167
andrewjanikic2
andrewjanikic2 :
Sounds like hydraulic lifter failure
2023-11-15 03:20:36
1
emmanueldivine81
Emmanuel Divine Edeh :
buy a Toyota
2023-11-15 04:15:25
4
worldwidetaco
WorldwideTaco :
Sounds like a 7.3! Nothing wrong 😂
2023-11-15 03:15:16
73
deke129
Deke :
The fact that when he lets off the pedal, The noise slows and then stops for a bit and then starts back up again. that tells me it's not a valve.
2023-11-15 03:37:33
17
mautotech
Andrew :
Try adjusting hp fuel pressure with scan tool and see what you get
2023-11-15 03:15:04
112
dmgperf
dmg :
Upper valve train noise (possible rocker arm or pushrod) let me know what you find 😀
2023-11-15 13:33:00
12
justp504
P :
Valve train or injector is my guess
2023-11-15 03:20:59
42
da.99548_
DA.GM :
Try ramping up rail pressure. Have heard similar noises on 17 and up L5P injection pumps.
2023-11-15 03:14:29
19
ashton_nichols06
𐂂𝙰𝚜𝚑𝚝𝚘𝚗𐂂 :
120k miles for a 2022 damn
2023-11-15 03:48:07
59
officialworstmechanic
officialworstmechanic :
I'd start with a relative compression test
2023-11-15 03:32:41
6
maurice_nat99
maurice_nat99 :
2022 and it has 122,000 miles lol damnn my 14’ Cummins has 90,000
2023-11-15 03:46:18
2
ryanarthur1295
Ryan Arthur :
Blown out copper washer on injector, hearing compression blow past injector
2023-11-15 16:03:31
4
cummins106
🥷🏿🐓 :
Ain’t got no gas in it.
2023-11-15 03:45:16
2
theyota84
Ls Aj :
I tink its the turbo bearing
2023-11-15 04:18:37
2
cavecat7
Cavecat7 :
Broken valve spring 🤪🥂✌️
2023-11-16 09:31:36
4
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