When the throttle is closed, while the engine is running at cruise rpm (tip-out), the turbocharger boost pressure raises rapidly. The pressure wave strikes a compressor blades causing a knocking noise. To prevent this the ECM opens the recirculation valve which allows excessive boost pressure to vent back to the air cleaner side of the turbocharger compressor.
Gasoline Containing Alcohol and Methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and
gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed
along with or instead of leade ...
Oil And Filter Replacement
•
Prolonged and repeated
contact with mineral oil will result in the removal of natural fats
from the skin, ...
Installing a child restraint on a front passenger’s seat is forbidden
Never place a rear-facing child restraint in the front passenger’s seat. If the
air bag deploys, it would impact the rear-facing child restraint, causing serious
or fatal injury.
In addition, d ...