c TUNE UP C 29 SERVICE DIHGNOSIS POOR FUEL ECONOMY VALVES STICKING Ignition Timing Slow or Spark Advance Stuck Warped Valve Carburetor Float High lmereaer Tappet Oearaaee Accelerator Pump Not Properly Adjusted Cal boolzed er Scared Valve Stems High Fuel Pump Pressure Insufficient Clearance Valve Stem to Guide Fuel Leakage Weak or Broken Valve Spring Leaky Fuel Pump Diaphragm Valve Sprmg cocked Loose Engine Mounting Causing Cearammated Od High Fuel Level in Carburetor QvER EA N LOW Cernpressien Inoperative Cooling System Valves Sticking Theromstat Inoperative Spark PlUgS Bad Improper Ignition Timing SpaYk Plug Cables Bad Improper Valve Timing W ak Coil OY Cendenser Excessive Carbon Accumulation Improper Valve Tappet Clearance Fen Belt go Lggse CaYbuY tOf Air Cleaner DUTY Clogged Muffler or Bent Exhaust Pipe High Oil Level in Air Cleaner Oil System Failure Dragging Brakes Scored or Leaky Piston Rings Front Wheels Our nf Alignmenr Sticking Exhaust Manifold Valve Tires Improperly Inflated Deuntless V 6 Engine Inaccurate Odometer Faulty Fuel Tank Cap POPPING SPITTINO DETONATION Clogged Muffler or Bent Exhaust Pipe Improper Igmooo Sticking Exhaust Manifold Valve Improper Carbareaea Excessive Carbon Deposit in MK er Pewa u Q 5i 2 s 2 b S LOW Cernpressien Sticking Valves Ig1 1ltlOI1 System Late Brokgn Valve Improper Functioning Carburetor Teppets Adjusted too Close OT Fuel Pump Spark Plug Electrodes Burned Fual Lines Clegged Water or Dirt in Fuel Air Cleaner Restricted Clggggd Lines Engine Temperature High Improper Valve Timing Improper Tappet Clearance Clogged Fuel Filter Sticking Valves Sticking Exhaust Manifold Valve X3 6 SHSLYEECSLHLG Dauntless V 6 Engine Nfuffi LI glcgged EXCESSIVE O CONSUMPTION Bent Exhaust Pine Piston Rings Stuck in Grooves Worn or Broken Sticking Exhaust Manifold verve Plstea Rlags Imvrererly Fltted er Weak Danntless V 6 Engine P1ston R1ng Oil Return Holes Clogged Excessive Clearance Main and Connecting Rod Bearings Log M zES N oi1 Leaks at Gaskets or Oil Seals ea Y a VOS Excessive Clearance Valve Stem Pear Pisren Ring Seal to Valve Guide Intake Sticking Valves Cylinder Bores Scored Out of Valve Spring Weak or Broken Round ol Tapered CYll d l SCOYOO Ol WOYO Too Much Clearance Piston to Cylinder Bore Tappet Clearance Incorrect Misaligned Connecting Rods Piston Clearance ree Large High Road Speeds or Temperature Leaky CYHUOOY Head Gasket Crankcase Ventilator Not Operating valves A sms E2 JrEZaZ ZErrag reumei are r name Sticking Valves or too Loose in Guides Crankshaft Bearing Journal Rough Improper Timing Lack of Oil Excessive Carbon Around Valve Head and Seat Oil Leakage Overheating Dirty Oil Valve Spring Weak or Broken Low Oil Pressure or Oil Pump Failure Valve Tappet Sticking Drilled Passages in Crankcase V Valve Tappet Clearance Incorrect or Crankshaft Clogged Clogged Exhaust System Oil Screen Dirty Defective Valve Lifter Hydraulic Connecting Rod Bent 34