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and once in a blue moon the whole injection pump will rattle loose. This happened to me on the way back from a 1500 mile trip.. I had to guestimate and sure enough I was too far advanced. Frito Lay mechanics also don't always get it right. If it were me I would take it to a dealer or some sort or read up and set back to stock... You need a dial gauge if I remember correctly.. I made a little tab to index what my stock timing is. I could measure if you if you'd like. This is on a 105 hp model, I think the build is 0858 if I remmeber correctly...


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