Detroit DD15 chirping noise
04-02-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #1
Detroit DD15 chirping noise
There is coming chirping noise out of engine and when push accelerator that noise comes and truck cab/ engine shakes abit. Does not happening when idling only when pulling load. Ussually just before going uphill.
I thought it was bad fuel so changed fuel filter and didnt help.
The truck is factory emmission intact all stock cascadia with DD15 430,000miles. Any ideas where to start looking?


User's Signature: Cascadia ISX15 CM2350
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04-03-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #2
RE: Detroit DD15 chirping noise
Combustion seal on the bottom of 1 of the injectors,
Atleast it was on the last couple I heard a chirping in
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04-03-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #3
RE: Detroit DD15 chirping noise
(04-03-2022 )RollinCoal Wrote:  Combustion seal on the bottom of 1 of the injectors,
Atleast it was on the last couple I heard a chirping in
Thanks
Thats what I thought.. or cracked injector


User's Signature: Cascadia ISX15 CM2350
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04-03-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #4
RE: Detroit DD15 chirping noise
check your CAC boot clamps. I've had mine leak and chirp or squeal a bit when its under load.
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 Thanks given by: Rawze
04-11-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #5
RE: Detroit DD15 chirping noise
Replaced injectors and problem is gone.


User's Signature: Cascadia ISX15 CM2350
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04-11-2022, (Subject: Detroit DD15 chirping noise ) 
Post: #6
RE: Detroit DD15 chirping noise
Ouch... Glad it fixed it
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