Answer to: My MacBook white 13" penryn wont charge or boot from battery?Check to see if the port is damaged. If not, you may have to replace the internal battery which Apple can do for about $129, if it's not in your warranty. Replacing the whole computer may be an option because the battery is an expensive component.
Answer to: Can I replace the lens cover on my iPhone 5?Yes, your cell phone provider can probably do it free of charge.
Answer to: Why are my rpms fluctuating up and downIf it is turned on and idle and the rpm's fluctuating, your fuel filter or fuel pump is going bad/clogged.