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Q: whey iam i loosing power on accelaration and its show egine falut. on 2003 Jaguar X-Type

i have not change my oil in five months but i did change my water pump, the radiator, the spark plugs and all the gaskets associated with it.
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Sounds like you have an Mannifold intake air leak. Take a look at

Also, take a look at (Towards the bottom, quote 75)
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