Similar to the thread below by Dean J, I have a similar kind of problem.......
When, say, accelerating from a standstill, the car will spool up fine then at approx .35-.40 (ish) bar the whole car just bogs down completely, misfires very badly and produces lots of black smoke
Car idles fine, although not as smoothly as before TBH, and will rev cleanly up to 5k+ when sat in neutral and revved progressively without any boost. Vacuum is a normal -0.60 - -0.70bar at idle.
Suspecting some sort of boost leak I removed ALL hoses and pipework and meticulously reseated them all (have had a boost leak ages ago and know how elusive they can be) although I must admit the symptoms are different.
The cruncher for me is the fact that all this only happens when I hit approx .35-.40 (ish) bar and car is perfectly behaved off/on light boost. I suspect some sort of turbo trouble but need someone to tell me what symptoms would appear if one (or both) turbo's are knackered. A lot of water has passed under the bridge since I was a mechanic and TBH I never had much exposure to turbo cars apart from the theory and a brief squizz at a 205/309/405 TD (which was Peugeots only turbo cars at the time). I can take a guess at the probably symptoms but I thought it would be easier and more accurate if you guys could give me an idea of what happens when turbos are on the way out.
Many ta's in advance.
TT