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Matt
Matt, Mechanical Engineer
Category: Jaguar
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Experience:  BEng hons Mech engineering, in auto industry 22 years
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Your question: "driving on motorway heard engine pop then lost

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Your question: "driving on motorway heard engine pop then lost all acceleration. seemed like engine was miss firing .managed to drive 150 miles home spluttering at good speed but car did not accelerate. Also heard a blowing sound when moving off from stop position"
Submitted: 1 year ago.
Category: Jaguar
Expert:  Shantal-Mod replied 1 year ago.
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Expert:  Matt replied 1 year ago.
Hello I'm assuming that this is the turbo diesel soI'd first check all the high pressure hoses post turbo/s for any split hoses or cracked metal pipes, also check the ends of the intercooler as its not unheard of to pop the end caps off under high boost. If this is OK then check the small vacuum lines to the turbo and its connected control solenoid on the bulkhead, any cracks or leaks can give turbo issuesAlso have a feel around with your bare hands with the engine running to see if you can feel any escaping gas under your touch. Another method is to use a soap and water solution sprayed onto any suspect areas - if there's a leak it'll bubble up with the engine running Also check that the vacuum hose running to the dump / turbo bypass valve is intact with no leaks as if the dump valve is opening prematurely you'll be losing all your boost
Expert:  Matt replied 1 year ago.
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