XFR start up noise

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10-02-2015, 09:01 PM

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XFR start up noise

Got a 2015 XFR. Good car but not a smooth as my previous X350. Noticed a slight engine rattle on initial start up. Goes away after 2minutes and doesn't reappear unless left overnight. Dealer says all S/C engines have it and is from the mechanical fuel pumps. Any body had similar experience
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10-02-2015, 09:21 PM

DPK

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Sounds like it maybe Catalytic converters heating up...Normal

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10-03-2015, 01:16 PM

hlgeorge

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Direct injection.

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10-18-2015, 08:18 PM

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XFR start up noise

Thought about catalytic converters after your suggestion. The noise is gone suddenly after about 2 minutes. There are two converters and I would think that one would be up to temperature in advance of the other. The noise goes completely suddenly.
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