i hear a lot of references to distributor cap and rotor and how ppl replace it at tune up. what are these two? what do they do (functionality)? should i replace mine? i.e. is it just a good idea to, or is it of utmost importance that i do, like say oil change.
does it improve performance in any way, or is it just a way to maintain the car?
tx.
does it improve performance in any way, or is it just a way to maintain the car?
tx.
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