what does the star wheel affect?
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#8
Ya, its a plug, just pop that little guy off, and turn the star wheel, which looks like a drum brake adjuster twards the engine for more pre boost fuel, and twards the fender for less pre boost fuel. I know if you have too much fuel down low the truck will bog, and smoke like a train, so you need to figure out if you like to smoke ppl out, or get a jump off the line.
#9