1. GENERAL INFORMATION MYROAD 700i POOR PERFORMANCE (AT HIGH SPEED) Inspection/Adjustment Symptom Probable Cause Connect the diagnostic tool, then check EMS and correct problems. Check ignition timing Faulty spark plug Correct timing Incorrect timing Faulty ignition coil Faulty CPS Check valve clearance Improperly adjusted valve Correctly adjusted Incorrectly adjusted clearance Worn valve seat Check fuel pump for fuel supply Empty fuel tank Fuel flows freely Fuel flow restricted Clogged fuel hose or filter Faulty fuel pump Clogged fuel injector Check throttle body or air cleaner for clogging Clean and unclog Not clogged Clogged Check valve timing Correct Incorrect Cam timing gear aligning marks not aligned Check valve spring tension Not weakened Weak spring Faulty spring 1-27