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[hillbilly]

if it just does it up hill then its probably pinging, you can retard the timing on your distributor to get rid of that. (its really easy) a toyota manual for your truck will tell ya how to do that yourself if you had any questions. as far as valve ticking.... well its just a little of the toyota tick, mine does it all the time (actually it stopped doing recently) I was told to turn up my stereo.... thats nothing to fret about.