Static Ignition Timing on VW A1 and A2 DigiFant Engines.Test conditions: Distributor cap off of the distributor body, business end of the coilwire where it cannot shock you, we WILL be making the coil spark. DVOM or TWO COLOR LED test light connected to the green/white Hallsignal wire at the base of the distributor. Engine at (or very near) TDC #1. On manual trans cars you'll be wantingthe bell housing plug removed to see the flywheel timing marks. Ignition key switch on. Some means of slowly rotating the engine by hand such as properlytightened v-belts and a socket on the alternator shaft nut or ascrewdriver in the alternator fan blades. I prefer 5th gear, car on alevel surface with brakes off, roll the car back and forth. After EVERY adjustment and after most checks, rotate the enginebackwards (counter clockwise as viewed from the right {passenger} sideof the car, UK, Down Under and Japan guys, figure it out already, rightand left are as viewed from the driver's seat) about 1/8th of a turn orso, then come back to the marks clockwise so as to take up belt andgear slack same like when the engine is running.--- 1st, CHECK where the timing currently is set. Back the crank up as described ^^, slowly rotate the engine just untilthe Hall signal goes HIGH, about 10 volts, look at the flywheel marks,that's where it is timed. Maybe you are done already, hey?Rotor is in this position.... [img]http://reflectionsandshadows.com/cabby/static-tdc-high.jpg[/img] Shutter wheel is in this position, aperture has just closed the Hall'window', but you normally don't need to look at this and wouldprobably rather not considering the pita rotor removal can be on theseengines. [img]http://reflectionsandshadows.com/cabby/shutter-wheel-at-1.jpg[/img] --- If adjustment is required, back up the crank, then come forward untilthe +6° flywheel mark lines up with the bell housing pointer. Loosenthe distributor hold down clamp and rotate the distributor bodyclockwise as viewed from the top as shown in the next pic, note thatthe voltage is low, Hall aperture is open. Slowly rotate the distributor body counter clockwise until the Hallvoltage signal spikes high, tighten the distibutor hold down bolt, backup the crank and CHECK it again. Repeat fine adjustments until a backup and re-check shows it's perfect.Perfect looks like either/both pics directly above, the pic below is during adjustment. [img]http://reflectionsandshadows.com/cabby/static-btdc-low.jpg[/img] --- Story time... sorryyyy.... About a month and a half back I had to get my '92 DigiFant I Cabriolet ready for CaliforniaSmog Testing. Among other routine tasks, I statically set the ignitiontiming using this exact method. Bentley and Factory specs call for +6°± 1° adjusting, +6° ± 2° checking. Since I was adjusting for a SmogTech to check I eyeballed +4° (by visually estimating 2/3rds from thecenter of the zero mark to the +6° mark) for minimal NOX emissions. smog tech (notice he's gone lower case?) guy did the CTS disconnect,2,000 RPM, click your heels 3 times book timing check with a degreereading timing light and recorded the timing was set to +4°, then heflunked the car's smog for a relocated oxygen sensor (effer.). Nextday, car was at the State of California's Smog Referee station whokindly issued and applied a relocated oxygen sensor approval/exemptionsticker good for forever. Along the way, the Official State of CA refalso did the strobe timing dance and recorded that the timing wasmeasured set at +4°. This static method works fine. |
Vw Digifant Manual Pdf
Vw Digifant Manual Download
VW Volkswagen, Repair manuals, English, 5.44 MB, The Digifant engine management system is an electronic engine control unit (ECU), which monitors and controls the fuel injection and ignition systems in petrol engines, designed by Volkswagen Group, in cooperation with Robert Bosch GmbH. VW Digifant Manual - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Scribd is the world's largest social reading and publishing site. Search Search. Digifant 2 Manual; Digifant 2 Troubleshooting; Contents. History Digifant was introduced in 1986 on the 2.1 (Vanagon in the US) engine. This system combined digital fuel control as used in the earlier Digi-Jet systems with a new. The combination of control and ignition control is the reason for the name 'Digifant II' on the first version produced. VW Digifant I, II Service Repair Manual PDF free online. Telecharger nos jours heureux dvdrip uptobox search. Fuel systems can be repaired by following the step-by-step procedures shown in this book. Make Sure You Understand The Customer’s Complaint — Identify the symptoms as you follow the diagnosis procedure. Try to determine the cause of the problem.