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  2. Battery leakage - Wikipedia

    en.wikipedia.org/wiki/Battery_leakage

    Battery leakage is the escape of chemicals, such as electrolytes, within an electric battery due to generation of pathways to the outside environment caused by factory or design defects, excessive gas generation, or physical damage to the battery.

  3. Head gasket - Wikipedia

    en.wikipedia.org/wiki/Head_gasket

    Engine knocking (detonation) can be caused by poor quality fuel, an engine fault or if inappropriate fuel and/or ignition settings are trialled/chosen while engine tuning is taking place. If the detonation is severe, the cylinder pressure can increase to eight times above normal pressures, [ citation needed ] which can cause the cylinder head ...

  4. Pre-ignition - Wikipedia

    en.wikipedia.org/wiki/Pre-ignition

    The reduced engine speeds allow more time for autoignition chemistry to complete thus promoting the possibility of pre-ignition and so called "mega-knock". Under these circumstances, there is still significant debate as to the sources of the pre-ignition event. [3] Pre-ignition and engine knock both sharply increase combustion chamber temperatures.

  5. Man found dead at house after 'gas leak' - AOL

    www.aol.com/news/man-found-dead-house-gas...

    A man in his 70s has been found dead at a house following a gas leak, police have said. Greater Manchester Police were called to reports of concern for welfare of a man on Seddon Street, Little ...

  6. What to know about the company behind Puerto Rico's massive ...

    www.aol.com/know-company-behind-puerto-ricos...

    A massive power outage blanketed most of Puerto Rico early Tuesday, leaving more than 1.2 million people without electricity. Here's what to know about the blackout and Luma Energy, which handles ...

  7. Brooklyn homeless shelter worker stabbed to death by masked ...

    www.aol.com/brooklyn-homeless-shelter-worker...

    A Brooklyn homeless shelter employee was brutally stabbed to death on the premises of a hotel converted to house the homeless, in the Brownsville neighborhood.

  8. Lean-burn - Wikipedia

    en.wikipedia.org/wiki/Lean-burn

    A lean burn mode is a way to reduce throttling losses. An engine in a typical vehicle is sized for providing the power desired for acceleration, but must operate well below that point in normal steady-speed operation. Ordinarily, the power is cut by partially closing a throttle.

  9. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!