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I rebuilt the lift pump, checked all the fuel lines pre pump. Vented the fuel system. It's still there. Only when warm & only at an idle.
Is it normal for the om617 to have a noise like this at idle?
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1983 300D 285,000
1948 willys fuel injected, tons, 39.5 PBR's
2000 PSD pumped for pulling..
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