Thanks for your response on Dec. 14 regarding my Tacoma with poor compression. I had a follow-up question. Is it possible some grit or something got into one of the valves which is causing the poor compression? I'm asking b/c as I mentioned, the fuel filter had never been changed before, and this all happened right after the throttle body was cleaned. If this is the problem, could running premium gas for a while and/or using fuel injector-cleaner clean it out? Would it hurt to try? Or is there some other product I could try that wouldn't hurt anything? Alternatively, if the valves need to be adjusted, could this cause poor compression? And how much would it cost to have the valves adjusted? The engine has 160K miles on it. Thanks again.
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