Econoline E550 V10-6.8L VIN S (2003)
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Inspect for damage.
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Clean the fittings.
Connect
1. Align and push the tube into the fitting until you hear a click.
NOTE: Lubricate the tube end with clean engine oil meeting Ford specification WSS-M2C153-F to ease assembly.
2. Pull on the fitting to make sure it is fully engaged, then install safety clip.