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turbo ticking noise 700

posted by  someone claiming to be daylan on  Wed Feb 9 01:55 CST 2005 [RELATED]

'87 740 Turbo

Well, I just replaced a section of the vacuum line which goes from the engine side of the throttle body through the firewall (turbo guage line??). It had some cracks and a leak where it had rubbed through against the manifold.

Now while driving under boost I can hear a faint ticking on the exhaust side of the engine. Not the usual turbo whine. Frequency goes up with RPM. Did not notice it before. Seems it gets a bit quieter after running for a while.

Could the fact that I am not running lean anymore (with the air leak) have changed something?
Exhaust leak?

Any ideas?

Thanks






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