Dibo1904;2499015 We are wondering if this could be a compression problem.[/QUOTE said:
It is highly unlikely that you have a compression problem. For the engine to not build boost because of lack of compression would also show up as the engine having an extreme amount of blow-by.
Most of the time when there is lack of boost there is lack of fuel, so the turbocharger has no reason to increase speed (boost). Fuel delivery problems can be mechanical or electrical; for example, the ECM may not be giving the command to deliver more fuel.
Also, a major intake air leak between the turbocharger and the plenum would not allow boost to build.
- John