Motor is running about 10 percent less than usual rpms. It did sit without going out for almost two months. Had close to full tank of gas 87 Octane. Could the gas have lost some octane during that sit time? And, would that cause the loss of rpms I am experiencing. Seems to sound ok running just not quite getting up to the usual 5500 rpms it tops at about 4900. Should I drain tank and try some 93 octane? I've changed p[lugs but that didn't have any response.
Thanks,
Tom
Thanks,
Tom