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Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 20578
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Sprinter: My 07 sprinter has started blowing white smoke from

Customer Question

My 07 sprinter has started blowing white smoke from the exhaust. It normally does so when in traffic our driving around town, and is fine on motorways. It started after turbo was replaced recently.
Submitted: 7 months ago.
Category: UK Car
Expert:  Matt replied 7 months ago.
Hello white smoke is likely to be overfuelling so I'd start by checking 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 If this is OK then remove the high pressure intake hose after the turbo and have a feel of the turbine wheel - there should be no play radially at all - but a little bit of axial / end to end float is normal
Expert:  Matt replied 7 months ago.
Hido you still need help?Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you

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