What kind of crankshaft does a 1990 Miata have?
On the other hand, if the crankshaft was strong enough to never break, the car would not weigh 2200 lbs. Keep in mind that a vast majority of 1990 Miatas are running many miles past their timing belt change and to over 100,000 miles without any problem. The 1991 1/2 and later crankshaft is certainly better than the early part.
Where to put the crankshaft key on a Miata?
If the tip of the crankshaft is closer to 1/2 inch back in there, you have the dreaded short nose part. Withdraw the key with needle nose pliers. Make note of the chamfered corner, it should be on the back of the key and face toward the crankshaft. The key should not be bent, deformed, or mooshed.
How often do you change the timing belt on a Miata?
Changing the Timing Belt (and front crankshaft seal) The Miata timing belt must be changed every 60,000 miles. Although the California Owner’s Manual says 105,000 miles, this is just to satisfy a state requirement that says timing belts should last 100,000 miles or more.
What happens if the crankshaft nose breaks off a Miata?
If the crankshaft nose breaks off, this is easy for a mechanic to diagnose. The car will not run and the mechanic finds the pulley assembly laying on the lower splash shield. In all examples, repair is the same; replace the crankshaft. I CAN HAVE A PROBLEM WITHOUT NOTICING?
Why is my Miata engine cranking but not starting?
It really can get that one last start out of it. There are a lot of issues that can cause your Miata to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.
How can I tell if my Miata has no spark?
You can pull a a spark plug out and attach it to the wire and lay it on the valve cover. Crank the engine, you should see spark. Check cylinders one and two. One and Four share the same coil and 2 and 3 share the same coil. If you have no spark on either one or two, start suspecting Crank Angle Sensor or CKP sensor on crank.
Why does the fuel pump not come on in a Miata?
The fuel pump relay on the NA8 is grounded by the ECU when engine speed reaches 50RPM. Power to the relay is fed through the main relay. In a condition where you have no RPM signal from the CAS the pump won’t come on. But lets make this as easy as possible. We know we have injector pulse, we know we have spark, and we know the cam is spinning.
Where are the control wires on a Miata?
Each injector has two wires, a power wire and a ground control wire that goes to the ECU. The power wires will be the same color on each injector. The control wires are different colors. Backprobe a control wire with your test light, other end clipped to ground, and crank the engine.
What should I do about the drain plug on my Miata?
If you live in an area with extreme temperatures, consult your owners manual for oil and other fluid recommendations. Using genuine Mazda filters is highly recommended. If you change your own oil, you probably noticed the little washer on the drain plug.
Are there any problems with the Mazda Miata?
I going to buy a 94 miata with 88,571k miles on the car. My mechanic said that the only problem with the car is that the oil pan begin to leak and it needs to be change. does anybody know how much will this cost to replace the oil pan or (gasket). and will the insurance be really exspensive because i’m a 17 yrs olds male.
How big is the pulley bolt on a Mazda Miata?
If your Miata is a 1990 or 1991 with VIN 209446 or less, you have a crankshaft with a smaller diameter nose. (Note: according to Mazda, the European spec MX-5 breakpoint is at 127442.) The pulley bolt shoulder diameter is 1.128 inches.
Do you need a break in on a Mazda Miata?
Mazda’s break-in recommendation is as follows: No special break-in is necessary, but a few precautions in the first 1,000 km (600 miles) may add to the performance, economy, and life of your Mazda. Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time.
What causes a water leak in a Miata?
There are two common places a Miata will leak water into the interior, where the top meets the windshield frame, around the windows where they contact the moldings. Leaks at the windshield frame are usually caused by dirty or damaged moldings or the latches not being tight enough.
Are there any problems with my Miata shocks?
My shocks are fine, no leaks, etc. The control arm bushing could be dirty or worn and needs cleaning or replacement. In my Miata, the bushing itself was in good shape and required no replacement. The mechanic cleaned both the right and the left bushing. I paid for no parts.
Why does my Miata make a high pitch squeal?
My Miata dealer was able to isolate the problem to a vibrating purge control valve in the emissions system of the car. This valve is located in the right section (passenger side) of the engine compartment. Question: My car has been worrying me with a high-pitch “squeal” lately.