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2.5 d4d HiAce diesel knock

Posted By aron fields Saturday, June 29, 2019 2:31:10 PM
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aron fields
 Posted Saturday, June 29, 2019 2:31:10 PM
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Evening all I have a Toyota HiAce in at the moment 2007 2.5 d4d
Up to around 2500 rpm there’s a loud diesel knock after 2500 it goes away
No fault codes
No misfires at idle
All 4 injectors tested fine
On live data the only thing I can see out of the ordinary is the fuel pressure correction up to 2500rpm it’s up to around 93mm3 then when after 2500 rpm it goes to -12mm3
At the minute I’m unsure what my next step is and I don’t want to just start throwing parts at it.
I planned on testing the fuel pressure sensor using my snap on verdict using the scope, however it’s a nightmare to get at and i don’t have a known good to compare it to

Any help appreciated
Autocod
 Posted Sunday, June 30, 2019 12:22:16 AM
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Last Active: Sunday, July 21, 2019 2:51:24 PM
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Soon your injector driver module its going to die,check your generator , usually this power fluctuations make unsane the ICU and make it burn .Common problems of D4D .
Also can renew the injector o-rings seals.
Anyway, all D4D have stupid noise like renault DCI.
If your injectors are delphi , its normal.
Denso injector sounds and works better.


always eat more than u can

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