Re: Reliability of air cooled vw's? (vwlarry)
Recollecting some commong problem areas which are usually discovered AFTER the purchase:
voltage regulator/battery/generator -- often it's hard to pinpoint the cause of that dead battery, and often one of these parts can cause the others to fail later (don't ask me why). I usually ended up replacing all three. *note, these cars can run for days or weeks on just the battery, adding to the difficulty of diagnosing a charging problem*
clogged fuel tank and lines -- if the car has been sitting, there can be gunk clogging up the fuel system, particularly in the tank. Blocking the pickup tube intermittently can be a maddening experience! You're on the side of the road tearing into the carb when the problem is at the tank.
starter soleinoid -- they are located in different places depending on the year of the car, and depending on whether the car is 6 volt converted to 12, or had previous repair work, you can scratch your head for hours trying to compare the wiring diagram vs. reality. I once had a bug with two starter soleinoids wired in parallel; one wasn't working and the P.O. just never removed it
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aftermarket parts -- BEWARE of aftermarket parts on the engine, they are often the source of trouble down the road. Chrome distributor hold-downs that don't fit, aftermarket fan shrouds that don't fit, carbeuretors that leak air, degree pulleys that aren't degreed right. The aftermarket industry can be surprisingly shoddy, and I've learned with aircooled to stick with only the best in aftermarket stuff, or OEM.
cooling -- Almost anything can make the engine run hotter than it was meant to, such as: missing engine tin, missing engine tin seals, missing heater hoses, leaky exhaust, dirt-caked cylinder fins, wrong fan shroud / oil cooler combination, wrong timing advance. Check for tell-tale signs like an oil light that comes on after a while. Use the best oil, change it frequently, and consider a Berg oil cooler.
clutch cable -- Once they stretch, they need very frequent adjusting. If the seller says 'oh the clutch needs to be adjusted', assume it's because he just adjusted it last week and it has stretched already. Figure on replacing it.