Go to the local Auto store and ask them to read the codes for you. They can tell you what the codes mean and what part to buy. You can also look the codes up online.
High idle, misfire, check engine light,High idle, misfire, check engine light,
Yes
It could.It could.
A vacuum leak, a bad injector and if the check engine light is on, check the codes.
Spark plug miss, fuel injector problem, burnt valve, or vacuum leak but the check engine light should be on if this is the case. Also possible broken motor mount if the check engine light is not on.
Disconnect and plug the vacuum line and time the engine. Reconnet the vaccum and recheck the timing which should be advanced.
Try removing the valve and blowing air through both passages. If one feels restricted as though from carbon buildup you should clean it out.
You couldpossibly have a problem with engine vacuum system like a leak
check for vacuum leak.
Yes, and it may show up as a random misfire.
Yes, it can cause check engine light to come on. Reasons are multiple - anything from air/vacuum leak, spark problems etc. to major failure.
Something won't be working and the check engine light will probably illuminate.