gasket MAZDA MX-5 1994 Owner's Guide

INTAKE AIR SYSTEM F GASKET, REPLACE 1. Air duct 6. Accelerator pedakable .... 2. Air cleaner housing Inspection / Replacement page F-103 Inspection .................. page F- 76 7. Throttle body 3. Mass airflow sensor Removal / Inspection / ................ Inspection / Replacement .... page F-142 Installation page F-101 4. Air hose 8. Intake manifold ........ 5. Resonance chamber Removal / Installation page F-102 Gartner Banana

INTAKE AIR SYSTEM THROTTLE VALVE 45UOFX442 THROTTLE BODY Removal 1. Remove the negative battery terminal. 2. Remove the air pipe. 3. Remove the accelerator cable from the throttle lever. Note Before disconnecting the water hoses, drain the en- gine coolant. 4. Disconnect the water hoses. 5. Disconnect the connectors for the idle air control valve and the throttle position sensor. 6. Remove the throttle body. Inspection Do not remove the thin sealing coating from the throttle valve or bore. 1. Verify that the throttle valve is closed throttle position. 2. Verify that the throttle valve moves smoothly when the throttle lever is moved from closed throttle position to wide open throttle. 3. Replace the throttle body if necessary. Installation Install in the reverse order of removal, using a new mounting gasket. Tightening torque: 19-25 N.m (1.G2.6 kgf.m, 14--18 ftlbf) Gartner Banana

INTAKE AIR SYSTEM INTAKE MANIFOLD Removal Warning e Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the "Fuel Line Safety Procedures" on page F-108. 1. Remove the throttle body. (Refer to above.) 2. Disconnect the vacuum hoses. 3. Remove the accelerator cable. 4. Disconnect the fuel hoses. 5. Disconnect the connectors from the fuel injectors. 6. Remove the fuel distributor and fuel injectors. 7. Remove the injector harness. 8. Remove the intake manifold bracket. 9. Remove the intake manifold. Installation Install in the reverse order of removal, using a new mounting gasket. 4 Tightening torque Intake manifold and fuel distributor: 19-25 N.m (1.9--2.6 kgf-m, 14--18 ft4bf) Injector harness and bracket: 7.9-1 0.7 N-m 180-110 kgf,cm, 70-95.4 in4bf) Gartner Banana

EXHAUST GAS RECIRCULATION (EGR) EGR CONTROL VALVE I EGR CONTROL VALVE Inspection 1. Start the engine and let it idle. 2. Connect a vacuum pump as shown and apply vacuum. 3. Verify that the engine runs roughly or stalls at more than the specified vacuum. Specification: 5.4--12.0 kPa (40-90 mmHg, 1.6-3.5 inHg) 4. If not as specified, replace the EGR control valve. Replacement Plug the water hoses after disconnecting them. 1. Remove the EGR control valve in the sequence shown below. (1 ) EGR hoses (2) Vacuum hose (3) EGR function sensor connector (4) EGR control valve and gasket 2. Install a new gasket, and then install the EGR control valve in the reverse order of removal. Gartner Banana

EXHAUST SYSTEM EXHAUST SYSTEM COMPONENTS Removal / Inspection / Installation 1. Remove in the sequence shown in the figure. 2. Check all components for damage, deterioration, and restriction and repair or replace as necessary. 3. Install in the reverse order of removal. GASKET REPLACE GASKET REPLACE GASKET REPLACE 1. Main silencer 3. Front exhaust pipe Inspect for deterioration and restriction Inspect for deterioration and restriction 2. Three-way catalyst 4. Exhaust manifold Inspect . . . . . . . . . . . . . . . . . . page F-134 Inspect for damage Gartner Banana

G IGNITION SYSTEM BURNS PLUG GAP DAMAGE AND DETERIORATION DAMAGE SPARK PLUG Removal 1 Installation Caution Pulling on the wire part of the spark plug lead may i/ break it. To remove the lead, pull only on the boot. Caution To avoid breaking the spark plug be sure to fit the socket squarely over it. Tighten to the specified torque. Spark plug tightening torque: 15--22 N-m (1.5--2.3 kgf-m, 11-16 ft-lbf) Spark Test 1. Disconnect the high-tension lead from the spark plug. 2. Connect a new spark plug to the high-tension lead. 3. Hold with insulated pliers approx. 5-10mm (0.20-4.39 in) from a ground. 4. Crank the engine and verify that a strong blue spark is visible. . -.d' Note If a timing light is used to check for spark, some lights do not light at Nos.:! and 4 cylinders even if the igni- tion system is normal. Inspection Check the following and replace the spark plugs as neces- sary. 1. Damaged insulation. 2. Worn electrodes. 3. Carbon deposits. If cleaning is necessary, use a plug cleaner or a wire brush. Wipe upper insulator. 4. Damaged gasket. Plug gap: 1 .O-1 .l mm (0.040-0.043 in) Gartner Banana

H CLUTCH MASTER CYLINDER REMOVAL I INSTALLATION Caution Clutch fluid will damage painted surfaces. If clutch fluid does get on a painted surface, wipe -. - - - it off immediately. 1. Remove in the order shown in the figure, referring to Removal Note. 2. Install in the reverse order of removal, referring to Installation Note. 3. Refer to After-installation Procedure on page H-9. 1. Clutch pipe 3. Clutch master cylinder Removal Note .................. below Check for fluid leakaae from cvlinder bore 2. Nut " Installation Note ................ below Overhaul .................. page H-10 Air bleeding ............... page H- 9 4. Gasket Removal Note Clutch pipe Disconnect the clutch pipe by using the SST. Installation Note Clutch pipe 1. Modify the clutch pipe tightening torque to allow for use of a torque wrench-SST combination. (Refer to section GI "Torque Formulas".) 2. Tighten the clutch pipe by using the SST. Tightening torque: -1 12.8-21.5 N.m (1 30-220 kgf.cm, 11 %-I90 in.lbf) Gartner Banana

TRANSMISSION J DISASSEMBLY Precaution : 1. Clean the transmission exterior thoroughly with a steam cleaner or cleaning solvent before disassembly. b Warning Using compressed air can cause dirt and other particles to fly out, causing injury to the eyes. Wear protective eye wear whenever using compressed air. 2. Clean the removed parts (except sealed bearings) and all sealing surfaces with cleaning solvent, and dry with compressed air. Clean out all holes and passages with compressed air, and check that there are no obstructions. Housing Components Note The front and rear oil seals do not need to be removed unless you are replacing them. Disassemble in the order shown in the figure, referring to Disassembly Note. 1. Clutch release collar 2. Clutch release fork 3. Boot 4. Front cover 12. Extension housing Disassembly Note ............ page J-14 Disassembly ................ page J-22 13. Transmission case 5. Gasket Disassembly Note ............ pane J-14 6. Oil seal (front) lnspect for damage of oil seal lip. If necessary, replace it. 7. Adjustment shim 8. Snap ring 9. Speedometer driven gear 10. Neutral switch 11. Back-up light switch . - 14. Snap rings 15. Speedometer drive gear 16. Steel ball 17. Oil seal (rear) lnspect for damage of oil seal lip If necessary, replace it. On-vehicle replacement ....... page J-14 Gartner Banana

J TRANSMISSION ASSEMBLY Precaution 1. All O-rings and gaskets must be replaced with the new ones included in the overhaul kit. 2. Before assembly, make sure all parts are completely clean. 4 3. Assemble the parts within 10 minutes after applying sealant. Allow all sealant to cure at least 30 minutes after assembly before filling the transmission with transmission oil. 35UOJX-053 (5TH) (REVERSE) (~RD, 4TH) (1 ST, 2ND) 45UOJX-029 Clutch hub For the synchronizer assemblies, align the synchronizer ring grooves and synchronizer keys. The synchronizer rings can be distinguished as shown in the figure. The inner diametes of the 2nd synchronizer ring is larger than the 1 st. When installing the gears and clutch hub assemblies in the following procedure, make sure that they are installed in the direction shown in the figure. Gartner Banana

TRANSMISSION J 1. Oil seal Assembly Note .................. below 2. Snap ring u 3. Steel ball 4. Speedometer drive gear 5. Snap ring 6. Transmission case 7. Extension housing Assembly Note .................. below 8. Main drive gear bearing Assembly Note .................. below 9. Snap ring 10. Countershaft front bearing Assembly Note .............. page J-44 11. Snap ring 12. Adjustment shim Assembly Note .............. page J-44 13. Gasket 14. Front cover 15. Speedometer driven gear 16. Neutral switch 17. Back-up light switch 18. Boot 19. Clutch release fork Assembly Note .............. page J-44 20. Clutch release collar Assembly Note .............. page J-44 35UOJX-020 Assembly note Oil seal 1. Apply transmission oil to the outer periphery. 2. lnstall a new oil seal with the SST. Extension housing 1. Apply sealant to the contact surfaces of the bearing housing and transmission case. 2. Align the inner shift lever and shift rod end groove, and install the extension housing. 3. Apply sealant to the bolt threads, and install the bolts. Tightening torque: 18-26 N.m (1.8-2.7 kgf.m, l4--19 ft4bf) Main drive gear bearing Install the main drive gear bearing by using the SST, and secure it with a new snap ring. Gartner Banana