My car sat for over a year with the same untouched 87 octane fuel. What are the effects of fuel sitting this long. The timing seems like its too advanced at even 10* or playing around a lil without a timing light, it will put out a cloud of white smoke if you rev it is that typical of bad fuel too? Just wondering how many of my problems are brought on by bad fuel. Tomorow im gonna top the tank off with fresh 91 maybe higher and see if the white smoke, timing problem and taking alot of cranking before it fires will stop. Whats your take on it?