'24. Troubleshooting - Share The Experience
Contents
1. 24 Troubleshooting Engine Does Not Start or is Hard Poor Performance at High Speed 24 4 to Start 24 1 Poor Handling 24 4 Engine Lacks Power 24 2 Poor Performance at Low and idle Speeds 24 3 Engine Does Not Start or is Hard to Start Possible Cause 1 Check fue flow to carburetor Not Reaching Carburetor ____ Clogged fuel tube or fuel filter e Sticking float valve Reaching Carburetor Faulty fuel pump Faulty fuel pump relay Clogged fuel tank breather Disconnected or faulty auto fuel valve vacuum tube 2 Perform a spark test _ Weak or No Spark __ Faulty spark plugs Fouled spark plugs Good Spark Faulty ignition control module Broken or shorted spark plug wires a Broken or shorted ignition coil Faulty ignition switch Faulty ignition pulse generator Faulty engine stop switch Faulty bank angle sensor Faulty bank angle sensor relay Faulty side stand switch Loose or disconnected ignition system wires 3 Test cylinder compression Low Compression Improper valve clearance shim too thick Compression Normal Improper valve and seat contact Valve stuck open Worn cylinder and piston rings Damaged cylinder head gasket Seized valve Improper valve timing 4 Start by following normal starting Engine Starts But Stops _ Improper starting en2. lows Freely 3 Remove carburetor and check for clogged jets Not Clogged 4 Check valve timing Correct Incorrect Fuel Flow Restricted Possible Cause Improper valve clearance Improper ignition timing Faulty ignition control module Faulty ignition pulse generator Clogged fuel line Clogged fuel tank breather Clogged fuel filter Faulty fuel pump or relay Fuel tank empty Faulty auto fuel valve Clogged __ _ Clean Incorrect 5 Check valve spring Not Weakened Poor Handling Weak Check tire pressure 1 If steering is heavy 2 If either wheel is wobbling ____ __________ 3 If the motorcycle pulls to one side o Camshaft not installed properly Cam reduction gear not installed properly Timing marks on the timing belt pulleys not aligned Faulty spring Possible Cause Steering head bearing adjustment nut too tight Damaged steering head bearings Bent steering stem Excessive wheel bearing play Bent rim Improperty installed wheel hub Swingarm pivot bearing excessively worn Bent frame Swingarm pivot adjusting bolt too tight Front and rear wheels not aligned Bent fork Bent swingarm Bent front axle Bent frame 24 4
3. ong type of fuel 13 Accelerate or run at high speed Engine Knocks a Worn piston and cylinder Wrong type of fuel Excessive carbon build up in combustion chamber Ignition timing too advanced Faulty ignition control module Lean fuel mixture Engine Does Not Knock Poor Performance at Low and Idle Speeds Possible Cause 1 Check ignition timing and valve Incorrect e Improper valve clearance clearance Improper ignition timing Faulty ignition control module Correct Faulty ignition pulse generator 2 Check carburetor pilot screw Incorrect _ See Fuel System Section adjustment Correct 3 Check for leaking intake pipe Leaking Loose insulator clamps Damaged insulator Not Leaking 4 DE o spark test Weak or Intermittent Spark gt gt Faulty carbon or wet fouled spark plug Good Spark Faulty ignition control module Faulty ignition coil Broken or shorted spark plug wires Faulty engine stop switch Faulty ignition pulse generator Faulty ignition switch Faulty bank angle sensor Faulty bank angle sensor relay Faulty side stand switch Loose or disconnected ignition system wires 24 3 Troubleshooting Poor Performance at High Speed 1 Check ignition timing and valve clearance Correct 2 Disconnect fuel tube at carburetor Fuel F
4. perly Valve Train Lubricated Property Possible Cause Brake dragging Worn or damaged wheel bearings Wheel bearings need lubrication Final gear bearing damaged Faulty tire valve Clutch slipping Worn clutch discs plates Warped clutch discs plates Weak clutch spring Sticking clutch hydraulic system Check for engine oil additive Starting enrichment valve opened Clogged air cleaner Restricted fuel flow Clogged muffler Clogged fueil tank breather Faulty fuel pump Faulty fuel pump relay Faulty ignition control module Fauity ignition pulse generator Improper valve adjustment Worn vaive seat Valve stuck open Worn cylinder and piston rings Leaking head gasket Improper valve timing Seized valve Improper valve and seat contact Carburetor not serviced frequently enough Plugs not serviced frequently enough Spark plugs are incorrect heat range Oil level too high Oil level too low Contaminated oil Clogged oil passage Clogged oil control orifice Contaminated oil Faulty oil pump 24 2 Troubleshooting SSS SS a O Possible Cause 12 Check for engine overheating Overheating _ Coolant level low Fan motor not working Not Overheating Faulty fan motor switch Thermostat stuck closed Excessive carbon build up in combustion chamber Use of poor quality fuel Clutch slipping Check for engine oil additive Lean fuel mixture Wr
5. richment procedure valve operation Carburetor incorrectly adjusted Intake pipe leaking Engine Does Not Fire Improper ignition timing Faulty ignition control module or ignition pulse generator Fuel contaminated Wet Plug _ _ Carburetor flooded Starting enrichment valve opened a Throttle valve open Air cleaner dirty 5 Remove and inspect spark piug 24 1 Troubleshooting Engine Lacks Power 10 11 Raise wheels off ground and Check tire pressure Accelerate rapidly from low to Accelerate lightly Check ignition timing Check valve clearance Test cylinder compression Wheels Do Not Spin Freely spin by hand Wheel Spins Freely Pressure Low _ ___ Pressure Normal Engine Speed Does Not Change second l When Clutch Released Engine Speed Reduced When Clutch is Released Engine Speed Does Not Increase Engine Speed Increases s Incorrect Correct Incorrect __ __ Correct Too Low tH aea Normal Check carburetor for clogging Clogged Not Clogged Remove spark plug Fouled or Discolored _ _ gt Not Fouled or Discolored Check oil level and condition Incorrect Correct Remove cylinder hed cover and inspect lubrication Valve Train Not Lubricated gt Pro
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