1991 Mazda Miata MX-5 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Mazda Miata MX-5
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1991 Mazda Miata MX-5 ProblemsMisfires Under Load
Misfires under load (acceleration) can be caused by spark plug wires arcing to the cylinder head in the spark plug wells. Water in the spark plug wells can also cause the same problem so careful diagnosis is needed.
A loud ticking noise (hydraulic valve lifter noise) may be heard from the top of the engine, particularly when the engine is still cold. The noise may occur more frequently on higher mileage vehicles; Hydraulic valve lash adjusters may need to be replaced to correct this issue. Following the maintenance schedule for oil changes will also help prevent a recurrence of the noise.
The engine may idle roughly or stall when it's cold because the oil pump pressure relief plunger is sticking. Failure is usually due to wear and it causes excessive oil pressure to pump up the hydraulic valve lifters keeping the valves from closing completely, which results in a loss of compression. The oil pump will need to be replaced in this case.
1991 Mazda Miata MX-5 QuestionsHad a tune up and coil packs replaced. New plugs&wireNow my car is not driveable (1 answer)
Fuel & air filters replaced. New plugs& wires. Mechanic replaced coil packs. Now car won't drive. Do I Need a New intake air control valve? Prior to these repairs my car would stall when stopped at light or stop sign. Can not drive out of the shops parking lot.
corrected the batery, now the car is dead, what needs to be fixed?
I replaced the clutch slave and master cylinders myself. However, for some strange reason after replacing them and attempting to bleed the system, the clutch pedal won't build any pressure. Also, when opening the bleeder on the slave cylinder no fluid comes out, but I can feel air moving in a...