Knock coming from under passenger side behind engine

2002 DODGE RAM
120,000 MILES • V8 • 4WD • AUTOMATIC
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AMY MAES
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When driving my truck there’s a noise that comes from under it that sounds like knocking. It’s from the passenger side and it’s mostly when the car is in drive and I don’t have my foot on the gas really hard. it’s only when it’s a little bit on the gas. I will upload a video.
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Nov 1, 2019 at 2:52 PM
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KASEKENNY
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Unfortunately, that sounds like a piston slap. Meaning an internal engine issue. I would get this addressed ASAP because right now it may only need a piston. If it fails then you will need an engine. It could just be a bearing on the crankshaft but either way we need to get it addressed because if you just let it go, you will need an engine.

The first test you need to do, is drain the oil and look for metal. I imagine you will see quite a bit.

Let me know if you have questions.
Nov 1, 2019 at 8:28 PM