tires MAZDA MX-5 1994 Workshop Manual

PRE-DELIVERY INSPECTION PRE-DELIVERY INSPECTION PRE-DELIVERY INSPECTION TABLE The following items may be done at any time prior to delivery to your customer. INSPECT and ADJUST, if necessary, the following items to specification: 0 Glass, exterior bright metal and paint for damage 0 Convertible top and detachable hardtop (if equipped) for damage 0 Wheel lug nuts and locks 89-117 N.m (9-1 2 kgf.m, 66-86 ft4bf) 0 All weatherstrips for damage or detachment Operation of hood release and lock Operation of fuel lid 0 Door operation and alignment Headlight aiming INSTALL the following parts: Wheel caps (if equipped) 0 Outside mirror(s) 0 Mast antenna (if equipped) UNDER HOOD-ENGINE OFF INSPECT and ADJUST, if necessary, the following items to specification : Fuel, coolant, and hydraulic lines, fittings, connections, and components for leaks Engine oil level 0 Power steering fluid level (if equipped) Brake and clutch master cylinder fluid level 0 Windshield washer reservoir fluid level 0 Radiator coolant level and specific gravity 0 Tightness of battery terminals pKiq INSTALL the following parts: CHECK operation of the following items: 0 Seat controls (sliding and reclining) 0 Door locks 0 Seat belts and warning system 0 Air bag system using indicator light (Refer to section T) Ignition switch and steering lock 0 Starter interlock switch (clutch pedal) All lights, including warning, and indicator lights 0 Audible warning system 0 Horn, wipers, and washers Audio system 0 Cigarette lighter Power windows (if equipped) 0 Power outside mirrors (if equipped) 0 Heater, defroster, and air conditioner at all mode selections (if equipped) CHECK the following items: Presence of spare fuses 0 Upholstery and interior finish CHECK and ADJUST, if necessary, the following items: 0 Pedal height and free play of brake and clutch pedals I Pedal height mm {in} I Ft: $iy I Clutch pedal {6.89--7.28) (with carpet) Parking brake 7-9 notchesil96 N (20 kgf, 44 Ibf) 0.63.1 (0.024. 12) Brake pedal RUNNING AT OPERATING TEMPERATURE CHECK the following items: 0 Automatic transmission oil level 171-181 (6.73--7.13) (with carpet) I ON HOIST I 4--7 {0.16-0.28} CHECK the following items: 0 Underside fuel, coolant, and hydraulic lines, fittings, con- nections, and components for leaks 4 Tires for cuts or bruises 0 Steering linkage, suspension, exhaust system, and all underside hardware for looseness or damage Manual transmission oil level Differential oil level I ROAD TEST I CHECK the following items: Brake operation Clutch operation 0 Steering control 0 Operation of meters and gauges Squeaks, rattles and unusual noises 0 Overall engine performance Seat belt emergency locking retractors 0 Cruise control system (if equipped) I AFTER ROAD TEST I CHECK for necessary owner information materials, tools and spare tire in vehicle The following items must be done just before the delivery to your customer. 0 Load test battery and charge if necessary -1 Install fuses for accessories Adjust tire pressure to specification Load test fesuk 0 Remove seat and floor mat protective covers (Refer to Door Label) 0 Vacuum and clean interior of vehicle Clean outside of vehicle Inspect installation of option parts with invoice 45UOAX-002 Gartner Banana

B TROUBLESHOOTING GUIDE Problem nsufficlent power 4bnormal combustion Engine noise Possible Cause Insufficient compression Malfunction of HLA' Compression leakage from valve seat Seized valve stem Weak or broken valve spring Failed cylinder head gasket Cracked or distorted cylinder head Stuck, damaged, or worn piston ring Cracked or worn piston Malfunction of fuel system Malfunction of ignition system Others Slipping clutch Dragging brakes Wrong size tires Malfunction of engine-related components Malfunction of HLA* Stuck or burned valve Weak or broken valve spring Carbon accumulation in combustion chamber Malfunction of fuel system Malfunction of ignition system Crankshaft- or bearing-related parts Excessive main bearing oil clearance Main bearing seized or heat-damaged Excessive crankshaft end play Excessive connecting rod bearing oil clearance Connecting rod bearing seized or heat-damaged Piston-related parts Worn cylinder Worn piston or piston pin Seized piston Damaged piston ring Bent connecting rod Valves or timing-related parts Malfunction of HLA' Broken valve spring Excessive valve auide clearance Malfunction of cooling system Malfunction of fuel system Others Malfunction of water pump bearing Improper drive belt tension Malfunction of alternator bearing Exhaust gas leakage Malfunction of timina belt tensioner Remedy Replace Repair Replace Replace Replace Replace Replace Replace Refer to section F Refer to section G Refer to section H Refer to section P Refer to section Q Replace Replace Replace Eliminate carbon Refer to section F Refer to section G Replace or repair Replace Replace or repair Replace or repair Replace Replace or repair Replace Replace Replace Replace Replace Replace Replace Refer to section E Refer to section F Refer to section E Adjust Refer to section G Refer to section F Replace Page Tappet noise may occur if the engine has set idle for an extended period. The noise should dissipate after the engine has reached normal operating temperature. (HLA troubleshooting: Refer to page 6-8) Gartner Banana

MANUAL STEERING TROUBLESHOOTING GUIDE Problem Steering heavy Posslble Cause Poor lubrication, foreign material, or abnormal wear of steering ball joint Stuck or damaged lower arm ball joints lmproper steering pinion preload Damaged steering gear Malfunction of steering shaft joint lmproperly adjusted wheel alignment Malfunctioning steering gear Replace Replace gear Replace Replace Adjust Replace ~ction- Lubricate or replace section R N-12 N-12 N- 9 section R N-12 ~i&d~ection N-13 General instability while driving Steering wheel pulls to one side Shake (Steering wheel vibrates upidown) Worn or damaged stabilizer and/or suspension arm bushings Dragging brake Loose lower arm lmproperly adjusted wheel alignment lncorrect tire pressure Damaged or unbalanced wheel Worn or damaged steering joints lmproper steering pinion preload Weak front coil spring Worn or damaged stabilizer andlor suspension arm bushings Malfunctioning shock absorber lmproperly adjusted wheel alignment Excessive tire and/or wheel runout Loose lug nuts Unbalanced wheel(s) Incorrect tire pressure Incorrect tire pressure Unevenly worn tires Weak front spring Replace Repair Tighten Adjust Adjust Adjust or replace Replace Replace gear Replace Replace Replace Adjust Replace Tighten Adjust or replace section R section P section R section R section Q section Q N- 9 N-12 section R section R section R section R section Q section Q section Q Adjust Adjust Replace Replace section Q section Q section Q section R I Cracked or worn transmission mount I Cracked or worn engine mount 1 ~e~lace I section B lncorrect tire pressure Unevenly worn tires Malfunction of shock absorber Shimmy (Steering wheel vibrates circumferentially) Excessive steering wheel play Cracked or worn steering gear mount Loose steering gear mounting bolts Stuck or damaged steering ball joint Excessive tire and/or wheel runout Loose lug nuts Unbalanced wheel(s) Adjust Replace Replace Replace Replace Tighten Replace Replace Tighten Adjust or replace section Q section Q section R section J N-12 N-12 N-13 section Q section Q section Q I Loose shock absorber mounting bolts 1 Tighten I section R Stuck or damaged lower arm ball joint Cracked or worn suspension bushings Damaged or worn front wheel bearing lmproperly adjusted front wheel alignment Worn steering gear Worn or damaged steering joints Worn or damaged suspension arm bushings Loose steering gear mounting bolts I lmproperly adjusted front wheel alignment Poor steering wheel return Replace Replace Replace Adjust Replace Replace Replace Tighten Replace Adjust Replace Adjust Worn linkage &-tie-rod ball joint lncorrect tire pressure Stuck or damaged steering joints section R section R section M section R N-12 N- 9 section R N-12 N-12 section Q N- 9 section R Abnormal noise from steering system 25UONX-00! Improper steering pinion preload Ball joint not operating smoothly Steering shaft contacting something Loose steering gear Malfunctioning steering gear Obstruction near steering column Loose steering linkage Worn steering joints Replace gear Replace Repair Tighten Replace Repair or replace Tighten or replace Replace N-12 N-13 N- 9 N-12 N-12 N- 9 N-12 N- 9 Gartner Banana

N ENGINE SPEED SENSING POWER STEERING TROUBLESHOOTING GUIDE Steering feels heavy - - Poor lubrication, foreign material, or abnormal wear of steering ball joint Stuck or damaged lower arm ball joints lmproper steering pinion preload Damaged steering gear Malfunctioning steering shaft joint Problem I lmproperly adjusted wheel alignment Possible Cause 1 Malfunctioning steering gear lncorrect tire pressure Loose or damaged oil pump drive belt Low fluid level or air in fluid I Leakage of fluid I Insufficient oil pump pressure Steering wheel pulls lncorrect tire pressure to one side Unevenly worn tires ( Weak front spring General instability while driving Worn or damaged stabilizer and/or upper or lower arm bushing Dragging brake Loose lower arm lmproperly adjusted wheel alignment lncorrect tire pressure Damaged or unbalanced wheel Worn or damaged steering joint(s) lmproper steering pinion preload Weak front coil spring Worn or damaged stabilizer and/or upper or lower arm bushing Malfunctioning shock absorber Cracked or worn engine mount Cracked or worn transmission mount Shake (Steering wheel vibrates up/ down) Shimmy (Steering wheel vibrates left1 right) lmproperly adjusted wheel alignment Excessive tire and/or wheel runout Loose lug nuts Unbalanced wheel(s) Excessive steering wheel play Poor steering wheel return Cracked or worn steering gear mount Loose steering gear mounting bolts Stuck or damaged steering ball joint Excessive tire and/or wheel runout Loose lug nuts Unbalanced wheel@) lncorrect tire pressure Unevenly worn tires Malfunctioning shock absorber Loose shock absorber mounting bolts Stuck or damaged lower arm ball joint Cracked or worn suspension bushings Damaged or worn front wheel bearing lmproperly adjusted front wheel alignment Worn steering gear Worn or damaged steering joints Worn or damaged lower arm bushing Loose steering gear mounting bolts Worn linkage or tie-rod ball joint lncorrect tire pressure Stuck or damaged steering joints lmproperly adjusted front wheel alignment lmproper steering pinion preload Ball joint not operating smoothly Steering shaft contacting something Action Lubricate or replace Replace Adjust Replace Replace Adjust Replace Adjust Adjust or replace Add fluid or bleed air Repair or replace Replace Adjust Replace Replace Replace Repair Tighten or replace Adjust Adjust Adjust or replace Replace Adjust Replace Replace Replace Adjust Replace Tighten Adjust or replace Replace Replace Replace Tighten Replace Replace Tighten Adjust or replace Adjust Replace Replace Tighten Replace Replace Replace Adjust Replace Replace Replace Tighten Replace Adjust Replace Adjust Adjust Replace Repair Pagelsection N-25 section R N-32 N-25 N- 9 section R N-25 section Q N-37 N-21,22 - N-34 section Q section Q section R section R section P section R section R section Q section Q N- 9 N-32 section R section R section R section R section Q section Q section Q section B section J N-26 N-25 N-25 section Q section Q section Q section Q section Q section R section R section R section R section M section R N-25 N- 9 section R N-25 N-25 section Q N- 9 section R N-32 N-25 N- 9 Gartner Banana

WHEELS AND TIRES OUTLINE. .. .. . . . . . . . . . ... . . .. .. . .. .. . . . . . . . . . Q- 2 SPECIFICATIONS ....... ......... ... .. .. .. .. Q- 2 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . Q- 2 WHEELS AND TIRES . . . . . . . . . . . . . . . . . . . . . . . . . Q- 3 SPECIAL NOTES ABOUT WHEELS AND TIRES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q- 3 NOTES REGARDING TIRE REPLACEMENT . . . Q- 3 INSPECTION 1 ADJUSTMENT . . . . . . . . . . . . . . . . Q- 3 REMOVAL I INSTALLATION . . . . . . . . . . . . . . . . . . Q- 4 TIRE ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q- 5 WHEEL BALANCE ADJUSTMENT . . . . . . . . . . . . Q- 5 05UOQX-001 Gartner Banana

Q OUTLINE, TROUBLESHOOTING GUIDE OUTLINE Wheels SPECIFICATIONS Tires -2 TROUBLESHOOTING GUIDE Temporary spare 14x4T - - TY Pe Item Size Offset mm {in) Pitch circle diameter mm {in) Material Size Air pressure kPa {kgf/cm2, psi} Standard 14x5 112-JJ 45 11.77) 1 00 (3.94) Aluminum Alloy 185160R14 82H 177 {I .8, 26) Page Excessive or irregu- tar tire wear Premature tire wear Tire squeal body vibration I Unbalanced wheel@) 1 Adjust I Q-5 Steel T1 l5/7ODl4 41 2 {4.2,60) Action Problem 1 Tre deterioration 1 Replace I - I Deformed wheel(s) or tire(s) I Repair or replace I - Possible Cause Refer to page Q-4 for details. Road noise or I Insufficient tire pressure [ Adjust Incorrect tire pressure ( Adjust Incorrect tire pressure 1 Adjust Q-3 Q-3 0-3 Shake [Steering wheel "Ibrates Excessive tire and wheel runout Loose lug nuts Unbalanced wheel(s) Insufficient tire pressure Unevenly worn tires Malfunction of shock absorber Loose shock absorber mounting bolts Stuck or damaged lower arm ball joint Cracked or worn suspension bushings Shimmy (Steering wheel vibrates lefiIright) Replace Tighten Adjust or replace Adjust Replace Replace Tighten Replace Replace Irregular tire wear Excessive tire and wheel runout Loose lug nuts Unbalanced wheel(s) - Q4 Q-5 Q-3 - section R section R section R section R Cracked or worn engine mount Cracked or worn steering gear mount Loose steering gear mounting bolts Stuck or damaged steering ball joint I Damaged or worn front wheel bearing ( Replace ( section M Replace Replace Tighten Adjust or replace I Improperly adjusted front wheel alignment 1 Adjust I section R Uneven (one-sided) I Unequal tire pressures 1 Adjust 1 Q-3 - - Q-4 Q-5 Replace Replace Tighten Replace section B section N section N section N braking Steering wheel I Incorrect tire pressure 1 Adjust doesn't return properly or pulls to either left or right . General driving Instability Excessive steering (2-3 wheel play Irregular tire wear (lefthight) Unequal tire pressures Different types or brands of tires mixed (leftlright) Loose lug nuts Unequal tire pressures Damaged or unbalanced wheel(s) Loose lug nuts Loose lug nuts I 15UOQX-00 Replace Adjust Replace Tighten Adjust Replace or adjust Tighten Tighten - Q-3 - Q-4 Q-3 Q-5 Q-4 Q-4 Gartner Banana

WHEELS AND TIRES Q WHEELS AND TIRES SPECIAL NOTES ABOUT WHEELS AND TIRES ,, 1. Do not use wheels or tires other than those types specified. 2. Aluminum wheels are easily scratched. When washing them, use a soft cloth, never a wire brush. If the vehicle is steam cleaned, do not allow boiling water to contact the wheels. 3. If alkaline compounds (such as salt-water or road salts) get on aluminum wheels, wash them as soon as possible to prevent damage. Use only a neutral detergent. - - 9MUOQX-004 NOTES REGARDING TIRE REPLACEMENT Note the following points when tires are to be removed from or mounted onto the wheels. 1. Be careful not to damage the tire bead, the rim bead, or the edge of the rim. 2. Apply a soapy solution to the tire bead and the edge of the rim. 3. Use a wire brush, sandpaper, or cloth to clean and remove all rust and dirt from the rim edge and the rim bead. For aluminum wheels, use only a cloth for this purpose; never use a wire brush or sandpaper. 4. Remove pebbles, glass, nails, and other foreign items embedded in the tire tread. 5. Be sure the air valve is installed correctly. 6. After mounting a tire on a wheel, inflate it to 250-300 kPa I2.55--3.06 kgf/cm2, 35.55--42.66 psi). Verify that the bead is seated correctly on the rim and that there are no air leaks. Then reduce the pres- sure to the specified level. 7. If a tire iron is used to change a tire on an aluminum wheel, be sure to use a piece of rubber between the iron lever and the wheel to avoid damage to the wheel. Work should be done on a rubber mat, not on a hard or rough surface. INSPECTION / ADJUSTMENT Check the following and adjust or replace as necessary. 1. Air pressure. Check the air pressure of all tires when they are cold, including the spare tire, with an air pressure gauge. u Air pressure: Standard tires 177 kPa (1.8 kgf/cm2, 26 psi) Temporary spare tires 412 kPa (4.2 kgf/cm2, 60 psi) 2. Wheel runout. Set the probe of a dial indicator against the wheel, and turn the wheel one full revolution. WEAR INDICATOR Wheel runout: Horizontal 2.0mm (0.079 in) max. Vertical 1.5mm (0.059 in) max. WEAR lNDICAToR 3. Tire wear. Specifications Remaining tread Ordinary tires: 1.6mm (0.063 in) min. (Tire should be replaced if wear indicators are exposed.) Snow tires: 50% of tread (Tire should be replaced if wear indicators are exposed .) Gartner Banana

WHEELS AND TIRES SHOULDER WEAR CENTER WEAR (c) (4 FEATHERED EDGE TOE-IN OR TOE- UNEVEN WEAR OUT WEAR Troubleshooting guide Abnormal tire wear patterns, such as those shown in the illustration can occur. Refer to the chart for the possible causes and actions. d' Possible cause I Action I I Underinflation (both sides worn) I Measure and adjust pressure Overinflation Measure and adjust pressure Lack of rotation Rotate tires I Incorrect camber (one side worn) Hard cornering Lack of rotation Incorrect toe-in I Adjust toe-in I Repair or replace suspension parts Reduce speed Rotate tires 1. Cracks, damage, and foreign matter (such as metal pieces, nails, and stones) in the tire and cracks, deformation, and damage to the wheel. 2. Loose wheel lug nut(s). 3. Air leaking from valve stem. Incorrect camber or caster Malfunctioning suspension Unbalanced wheel Out-of-round brake drum or disc Other mechanical conditions Lack of rotation REMOVAL / INSTALLATION When reinstalling a wheel, retighten the lug nuts to the specified torque after about 1,000 km (620 miles} driv- ing. Repair or replace suspension parts Repair or replace Balance or replace Correct or replace Correct or replace Rotate tires Caution Applying oil to the lug nuts, bolts, or wheels will cause the lug nuts to become loosened. Tighten the lug nuts to the specified torque in a criss- cross fashion. Verify that the wheel-to-hub contact surfaces are clean. Tightening torque: 88-11 8 N.m (9-1 2 kgf.m, 65--87 ft-lbf) Gartner Banana

WHEELS AND TIRES Q FRONT BALANCE WEIGHT TIRE ROTATION To prolong tire life and assure uniform tire wear, rotate the tires as specified below except the "TEMPORAARY- USE ONLY spair tire. After rotating the tires, adjust each tire to the specified air pressure. (Refer to page Q-3.) U.S.A: Every 6,000 km (3,750 miles) Canada: Every 24,000 km (15,000 miles) or 15 monthes (Whichever comes first) WHEEL BALANCE ADJUSTMENT If a wheel becomes unbalanced or if a tire is replaced or repaired, the wheel must be rebalanced to within specifi- cation. When balancing a wheel: (1) Use no more than two balance weights on the inner or outer side of the wheel. (2) One balance weight should weigh no more than 60g {2.1 oz}. If the total weight of all the balance weights on one side exceeds 1009 I3.53 oz}, then reba- lance after repositioning the tire on the rim. (3) Select suitable balance weights for steel or alumi- num alloy wheels. Caution Using an on-vehicle balancer may cause damage to the transmission. Always use an off-vehicle balancer whenever balancing a wheel@). Maximum unbalance (at rim edge): 10 g (0.35 oz) Gartner Banana

TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE Problem General instabllity Body "rolls" "Heavy" steering wheel operation Steering wheel pulls to one side Excessive steering wheel play Body leans Abnormal noise from suspension system Shake (Steering wheel tibrates upldown) Shimmy (Steering wheel vibrates leftlright) Possible cause Weak coil spring Malfunction of shock absorber Worn or damaged stabilizer and/or suspension arm bushings Worn or damaged upper or lower arm ball joint Improperly adjusted wheel alignment Weak stabilizer Worn or damaged stabilizer and/or suspension arm bushings Insufficiently lubricated or stuck upper arm lower arm ball joint lmproperly adjusted wheel alignment Weak coil spring Worn or damaged stabilizer and/or suspension arm bushings Deformed upper or lower arm or knuckle Loose upper or lower arm bushing Worn or damaged upper or lower arm bushing Worn or damaged upper or lower arm ball joint Weak coil spring Weak stabilizer andlor suspension arm bushings Loose mounting component Poorly lubricated or worn upper or lower arm ball joint Malfunction of shock absorber Worn or damaged stabilizer and/or suspension arm bushings Excessive tire or wheel runout Loose lug nuts Unbalanced wheel@) Cracked or worn engine mounting rubber Cracked or worn steering gear mounting rubber Loose steering gear mounting bolts Stuck or damaged steering ball joint Excessive tire or wheel runout Loose lug nuts Unbalanced wheel(s) Insufficient tire pressure Unevenly worn tires Malfunction of shock absorber Loose shock absorber mounting bolts Stuck or damaged upper or lower arm ball joint Cracked or worn suspension bushings Damaged or worn front wheel bearing lmproperly adjusted front wheel alignment Action Replace Replace Replace Replace Adjust Replace Replace Replace Adjust Replace Replace Replace Replace Replace Replace Replace Replace Tighten Replace Replace Replace Replace Tighten Adjust or replace Replace Replace Tighten Replace Replace Tighten Adjust or replace Adjust Replace Replace Tighten Replace Replace Replace Adjust Page R-13 R-12,22 R-16, 18, 19, 23,24,25 section M R-15,17 R- 6 R-19,25 R-16, 18,19, 23, 24,25 section M R-15,17 R- 6 R-13 R-16, 18,19, 23, 24,25 R-15,17 section M R-16,18 R-16,18 R-15,17 R-13 R-16, 18, 19, 23,24,25 section M 7 R-15,17 R-l2,22 R-16, 18,19, 23,24,25 section M - section Q section Q section B section N section N section N - section Q section Q section Q section Q R-l2,22 R-12,22 R-15, 17 R-16,18,19 section M R- 6 15UORX-00 Gartner Banana