Thread: D24T bad sounds
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Old 05-05-2019, 09:50 AM
v8volvo v8volvo is offline
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Join Date: Jun 2009
Location: Montana, USA
Vehicle: '86 745, '83 764
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Have you taken the two failed injectors apart to see if you can find a reason for the problems? Does the needle move freely in the nozzle? Any broken springs?

What kind of fuel do you normally use? And do you put in any kind of lubricity additive (biodiesel, Stanadyne, PowerService, etc)?

I have seen injectors fail with these symptoms when the needle hangs either due to lubrication failure and resultant scuffing, or contamination from a failing injection pump or elsewhere that jams the needle open. In that case you may be able to clean it and get it working well again, but you will want to know what was the source of the contamination.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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