eep UBQXERSAL SERIES MANUAL D1 104 SERVICE DIHGNOSIS Poor Fuel Economy Valves Sticking Ignition Timing Late or Spark Valve Stem Warped Advance Inoperative Valve Stem Carbonized or Scored Carburetor Float Setting Too High Valve Stern Clearance Insufficient in Guide Accelerator Pump Improperly Adjuisted Valve Spring Vi eak or Broken Fuel Pump Pressure High Valve Spring Distorted Fuel Line Leakage Cllil Contaminated Fuel Pump Diaphragm Leakage Cylinder Compression Low Ov heaH g Valves D0 Not Seat Properly Coolin A g System Iznoperative PliigsCI i t1 feC tiVe Tl ffm Stat Inoperative Ignition T immg Incorrect Ignition Coil or Capacitor Defective C Valve Timing Incorrect arburetor Air Cleaner Dirty b n A 1 t E Brakes Drag Igar o ccumu a ron xcessive Wheel Alignment Incorrect Sn Belt LOOSE Mtuffler or Exhaust Pipe Clogged or Bent Tire Pressure Incorrect 1 S F Odometer Inaccurate IZ yS t m agufe Fuel Tank Cap Clogged or Defective imsmn Rmgs Viom Or Scored Muffler or Exhaust Pipe Clogged or Bent Popping Spitting Detonation lack of Power Ignition Timing Incorrect Cylinder Compression Low Yg Y9t IYPP 0Pg b lrigiijeri Timing Late lar on eposn in om ustion Carburetor or Fuel Pump Clogged Ch mb rs EX S iV Of Defective Valves Not Seating Properly Fuel Liries clogged Valve Spring Broken Air Cleaner Restricted Spark Plug Electrodes Burned Engine Temperature High W8t l QF Dirt in F 1 l Valves Do Not Seat Property Mei Lme Ciogaeed Valve Timing Late Valve Timing Incorrect Intake Manifold or Cylinder Head Gasket Leaks Muffler or Exhaust Pipe Clogged or Bent Exclyswe Oil consurrlpllon Spark Plugs Dirty Or jD fectiV ll iston Rings Stuck in Grooves Weak Breaker Point Gap Incorrect M Worn Broken or ncorrectly Fitted Breaker Points Defective l rankshaft Mam Bearings or Ignition Coil or Capacitor Defective Cmlncqtmg ROS B gS Have Electrical Connection Loose EXCQSSWB Clearance Broken Valve Spring gaskets or Oil Seals Leak Broken Piston Ring OI Piston yl1nd er Bores Worn Scored Cylinder Head Gasket Defective Ou1 f R unf1 or Tapered Distributor Cap Cracked lP1StOflS Have oo Great Clearance to Cylinder Bores L C lZlonnecting Rods Misaligned W mP High Road Speed Valves Not Seating Properly High Temperature Piston Rings Seal Poorly lZ2ranl case Ventilation System llnoperative Valve Spring Weak or Broken Cylinder Scored or Worn T Piston Clearance Too Great Be4 gIngkl aIl Ir Cylinder Head Gasket Leaks r O 1 f rBg 2 ilgu2 al C l L l Lo Burned Valves and Seats Oil Lzgiage W Valves Stick or Are Too Loose in Guides Oil Dirty Valve Timing Incorrect Oil Pressure Low or Lacking Valve Head and Seat Have Excessive Carbon Oil Pump Failure Engine Overheats Drilled Passages in Crankshaft or Valve Spring Weak or Broken Crankcase Clogged Valve Lifter Seized or Collapsed Oil Screen Dirty Exhaust System Clogged Connecting Rod Bent 105