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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 22001
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Was sitting at traffic lights when ssangyong rexton 2.7 slightly

Customer Question

Was sitting at traffic lights when ssangyong rexton 2.7 slightly started to over rev alittile drove about a mile and then a cloud of white smoke garage canot find out what is wrong with it they can get it running with help easy start but engine will not rev
Submitted: 1 year ago.
Category: Car
Expert:  Shantal-Mod replied 1 year ago.
Hello,
I'm Shantal and I'm a moderator for this topic.
I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.
I was checking to see if you had already found your answer or if you still need assistance from one of the Professionals.
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Shantal
Customer: replied 1 year ago.
I would like to wait please
Expert:  Matt replied 1 year ago.
Hello I'm assuming that this is the turbo diesel in which case it sounds like the turbo has failed to me I'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 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 one other possibility is that the wastegate actuator spring has gone soft so allowing the wastegate to open prematurely - if your actuator has a threaded end you can increase the preload on it to see if this improves things otherwise these units are quite cheap compared to a new turbo so it may be worth trying a replacement
Expert:  Matt replied 1 year 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