Sounds like rod knock - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 07-17-2009, 12:53 PM Thread Starter
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Sounds like rod knock

Hello everyone;

This may be normal but I still have to ask for piece of mind.

At highway speed (55-60, 16-1800 rpm) I occasionally hear what sound like a rod knock in a gas engine, though there is no other indication of a problem. The temps are normal, good and smooth power delivery, good oil pressure, no other strange noises. One mod I did was the HPX tube but I haven't heard of it causing this issue. In fact, is it an issue or just an annoyance? Thanks for the feedback.

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post #2 of 2 Old 07-17-2009, 06:30 PM
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bad injector would make a noise like a rod knock on gas engines. once it gets bad enough it sounds like metal on metal hitting like your valves are hittinh pistons.

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