the top of my motor is making a knocking noise what could it be

Asked by Guru6777Y Apr 07, 2020 at 07:22 PM about the 2005 Dodge Grand Caravan

Question type: Car Selling & Trading In

what could a knocking noise be coming from top of engine

1 Answer

120,535

If the knocking is actually coming from the top, likely it's valves. You have hydraulic lifters, so there could be sticking valves and the engine could use a cleaning. Otherwise, the knocking could actually be coming from below: worn bearings. Change the oil, or even add an oil treatment, like Seafoam. If that doesn't quiet it, have a mechanic look at it.

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