33 - D - ADJUSTMENTSArticle Text1989 Volkswagen GolfFor...

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Unformatted text preview: D - ADJUSTMENTSArticle Text1989 Volkswagen GolfFor Volkswagen Technical Site Copyright 1998 Mitchell Repair Information Company, LLCMonday, August 23, 1999 11:45PMARTICLE BEGINNING1989 ENGINE PERFORMANCEVolkswagen On-Vehicle AdjustmentsVolkswagen; Cabriolet, Fox, Golf,Golf GT, Jetta & VanagonENGINE COMPRESSIONENGINE COMPRESSION TESTCheck compression with engine warm, all spark plugs removedand throttle wide open. Ground coil wire from center of distributorcap to engine block. Disconnect one end of duct between airflow sensorand throttle body to disable fuel injection system. Crank enginethrough at least 6 compression strokes per cylinder to determineengine compression.ENGINE COMPRESSION TESTModel Standard Minimumpsi (kg/cm) psi (kg/cm)Cabriolet ......... 131-174 (9.0-12.0) ........ 109 (7.7)Fox ............... 131-174 (9.0-12.0) ........ 102 (7.0)Golf & Jetta ...... 131-174 (9.0-12.0) ........ 102 (7.0)Golf GT ........... 145-189 (10.2-13.2) ....... 109 (7.7)GTI ............... 131-174 (9.0-12.0) ........ 109 (7.7)Vanagon ............ 87-131 (6.1-9.2) ......... 73 (5.2)VALVE CLEARANCENOTE: All models use hydraulic lifters. No adjustments arerequired.IGNITION TIMINGNOTE: Basic timing readings are only valid when engine idle speedand the idle mixture are within specifications.CHECKING & ADJUSTINGAll (Except Vanagon)1) Warm engine to normal operating temperature (cooling fanshould cycle at least once). Remove the 27 mm plastic plug from timingcheck hole on transaxle bellhousing (if equipped).2) With ignition off, connect a tachometer and timing lightto vehicle. Start engine and briefly raise engine speed above 3000 RPMa few times, then allow engine to idle normally. With distributorD - ADJUSTMENTSArticle Text (p. 2)1989 Volkswagen GolfFor Volkswagen Technical Site Copyright 1998 Mitchell Repair Information Company, LLCMonday, August 23, 1999 11:45PMvacuum hoses connected, timing mark on flywheel should appear adjacentto pointer in hole.3) If an adjustment is needed, turn ignition off and loosendistributor hold-down bolt just enough to move distributor by hand.Start engine and allow to idle. Turn distributor until timing mark isaligned with pointer in bellhousing. Stop engine and tighten hold downbolt to 18 ft. lbs. (24 Nm.). Readjust if necessary and installplastic plug if removed.Fig. 1: Ignition Timing Mark All (Except Vanagon)Courtesy of Volkswagen United States, Inc.Vanagon1) Warm engine to normal operating temperature. Stop engineand connect a tachometer and timing light to engine. Start engine andraise engine speed to a minimum of 2100 RPM at least 4 times, allowingthrottle to close each time (this procedure must be repeated each timetiming is checked)....
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This note was uploaded on 10/04/2010 for the course ENGINEERS 22453175 taught by Professor Heydari during the Spring '08 term at Miami University.

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33 - D - ADJUSTMENTSArticle Text1989 Volkswagen GolfFor...

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