First, my skinny spare tire is the default Continental 125/80R17 99 M model and a designated 17 inch wheel . The sidewalls says SP57 AMCW4404. So this tire is manufactured in week 44 of year 2004 which is beyond the "10 years recommended" to keep for a spare. My psi gauge reader shows no reading. Do you guys think it is ok for me to inflate this tire and use it (if needed) for a 1000 miles round trip I'm making later this week? I plan to get the tire replaced from Tirerack in a few months time and I do carry a tire inflator in this car. I'm taking a chance but the last time I used any spare was 10 years ago for tire punctured.
Also, if the solenoid valve( solid metal item on top of the engine) is not leaking oil and the Peake code reader does not say anything, is there a reason to replace it at all and if the engine runs smoothly? Can someone confirm that there is one one solenoid valve and not two? I've replaced the other camshaft position sensors(both exhaust and intake parts; black color) in the past only after it has oiled up and also after the Peake code shows an error. I only want to replace parts if I need to.
Thanks