Manual Del Volkswaguen Sedan Vocho

Late-model Mexican Beetles and
The ACD Air-Cooled Engine
Disclaimers, etc.
This is NOT an official service manual, and the information and procedures contained herein have
been gathered from various unofficial sources. Technical information for the modern Mexican fuelinjected air-cooled engine has been nearly impossible to find, leaving those of us who do not live in
Mexico without theresources to properly maintain and repair our vehicles. Fortunately the engines are
extremely reliable and require less adjustment than the “classic” cars of the 60s and 70s. (I’ve driven
mine daily for 3 years, and it has needed only oil and filter changes.) But when something does go
wrong… Having accumulated the various specifications and some procedures, and by experimenting
where procedureswere not described, I’ve put this data together to help me maintain my cars. Due to
many requests I’ve decided to make this available to aid other owners as well. However, not all
information may be accurate, and I assume no liability either for the correctness of the information or
any damage or harm that may result from using the information and procedures contained herein.
Besides, with myfew resources and no insurance, a lawsuit wouldn’t be worth your time anyway.
The author has no association with any Volkswagen company, and use of trademarked terms are
purely for identification, and in no way imply any connection or endorsement of a Volkswagen legal
entity.
This is not intended to be training in engine management systems and diagnostics for an owner of the
older carburetedcars. The procedures used are similar to those for modern VW models using
computerized engine management systems, and this is intended to be an aid for technicians already
familiar with the general procedures so they can apply their expertise to the air-cooled engines.
Mechanics unfamiliar with these systems and procedures can gain understanding from readily
available sources, such as the “ScanTool Companion” and other publications from Bentley Publishers.
The Bentley website technical forums (www.bentleypublishers.com) are also an excellent resource.
Introduction
Those of us who drove early 60’s Beetles when they were new have always felt “connected” to them;
and as we have lived with the more complex (and comfortable) modern cars have longed for the simple
transportation of theBeetle. Eventually many of us bought and “restored” old Beetles, and found that
35 year-old carburetors and ignition systems aren’t as reliable as we remembered. We also may feel
guilty about the relatively “dirty” exhaust of the old cars, although with so few on the road this is more
of a symbolic issue than a problem. Wouldn’t it be nice to have a “new” old Beetle with a solid, cleanrunningengine without fussy carburetors and distributors?
Along came Btlmex and others who could take your old, U.S. registered Beetle and put on a brandnew Mexican-made body and running gear. You could even fit the new ACD fuel-injected engine,
replacing the troublesome fuel and ignition systems with a very trouble-free electronic Digifant engine
management system, and with a Lambda sensor andtriple-catalytic converter to make the old Beetle
(you would be driving anyway) a clean-running and reliable vehicle. The restored car also had
improved brakes, modern seat belts and seats, and even an alarm and anti-theft system. While they did
not have airbags and other modern U.S.-mandated crash-protection systems, they met all requirements
for the time the car was originally imported, and couldtherefore continue to be licensed and driven.

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The car still has the simple, basic transportation feel of the Beetle, with the least reliable systems
replaced with solid modern technology. You end up safer and cleaner than continuing to drive the car
with the original aging parts, so this is a real win-win situation.
As long as none of the new electronic systems has a problem and needs...