Quote:
Originally Posted by rice_classic
Master Tech is "doing it wrong". It even clearly states IN the TSB the cause of the noise. Stupid stupid stupid. This isn't "other subarus". How many "other subarus" have Toyota D4S direct injection? None.
Most of us on this board know that ethanol has nothing to do with it, because we're smarter than that.
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The cause of the noise per the TSB is the high pressure fuel pump. The TSB also notes you may hear another ticking noise - caused by D-4S - which is completely normal. They are two *completely different* noises which you seem to be misconstruing as the same.
About ethanol... the manual states not to use ethanol mixes > 10%. I could ALWAYS reproduce the cricket noise before. After I switched to ethanol-free 93 octane, I could NEVER reproduce it. What kind of conclusions should I draw from these observations? Should I ignore these *hard facts* because people on this forum are "smarter than that"?