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Can you change the crankshaft and bearing without removing engine on E-150 van V-8 302 1994 if yes do have to prime oil pump before resart engine?

I understand you're asking if you can replace the crankshaft and bearings on a 1994 E-150 van with a 302 V8 without removing the engine.

The answer is a resounding NO.

Here's why:

* Accessibility: The crankshaft and bearings are deep within the engine block. Without removing the engine, you'll have extremely limited access, making the job practically impossible.

* Complexity: Replacing a crankshaft and bearings is a major engine overhaul. You need to remove the pistons, connecting rods, and potentially other engine components to access the crankshaft.

* Safety: Attempting this without proper tools and experience is dangerous. You risk damaging the engine further, potentially causing serious injury.

Regarding priming the oil pump:

* Yes, you absolutely must prime the oil pump after a major engine overhaul like this.

* It's essential to ensure oil pressure is established before starting the engine to prevent catastrophic damage.

Recommendation:

* It's strongly recommended to take your van to a qualified mechanic for this job.

* They have the experience, tools, and specialized equipment to safely and effectively perform the repair.

Attempting this yourself without the necessary expertise is highly discouraged.

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