I have a 1982 Westy. There comes a time (about a month or so) when the engine loses power... I get into first or second gear, try to pick up speed and it does, until about halfway up the power curve, and then the power goes into a nose-dive. It's annoying. I checked what I could and have found that I think what causes the lack of power is that some white deposits (carbon?) accumulate on the metal contacts in the distributor cap. It kinda cakes onto the contacts and I have to scrub them off and sandpaper the contacts. Then the engine performance gets back to how it should be. What causes these deposits to get there? What can I do to avoid getting these deposits to accumulate there? (I've changed the rotor/cap and it still gets these deposits. I've sealed all the vacuum hoses; I've put Split Fire plugs [works good, too]; I use 92 octane gasoline; I've changed the spark plug wires/coil wire) BTW, please keep the responses at layman's level. I'm not a "real" mechanic. ---roy
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