Question about BMW Z3

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Sometimes, when I tray to start the engine no sound is produced... just a fine tzzzzzzz sound from the electric starting motor that ends in a "clack" . May you give me some information about how to clean the so called "bendix"???

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The "Bendix" is the starter drive in the actual starter. When you crank the starter the bendix is driven forward into the flywheel. It sounds like the bendix spring is worn or week and it's not meshing with the flywheel. Instead it's grinding against it. If you're ambitious you can pull the starter, dismantle it and replace the bendix or option 2 replace entire starter w/new or rebuilt. Both will have new drive and save you a bunch of time.

Posted on Jan 02, 2011

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I have just overhaul my engine but when the ignition on it cranks but cant start


Which car is this? Anyway if its cranking then your starter motor and related wiring is fine. Open the engine oil filler cap or head cover and then try to crank and see if tappets are actually moving or not. You should also pop out the fuel line from carb / mpfi to see if actually fuel is coming out of line or not. Because sometimes fuel pump produce humm sound but do not actually pump fuel.

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My car doesnt want to start up right away in the morning. Almost like its really cold out and it takes it a min. The rest of the day its fine runs great. Any ideas?


Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.

Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.


Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.

All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers

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I have 01 kia rio and the only way my car will start is if it is jumpped but other than that it acts like it wants t turn over but it never does.. I thought it was my altenator but someone told me if i...


If the car can be jump started and then runs fine once it is started then the problem is your battery. Once the alternator is being driven by the engine, that is producing the power needed to run the car and then you have no problems from what you have described.

You will find that the battery is virtually dead or faulty and needs to be replaced. It clearly does not have sufficient power to turn the starter motor and crank the engine over.

If the problem was not with the battery then you would not be able to start the car by hooking up power from another vehicle.

The battery is the only power source in your car to turn the electric starter motor to start the engine.

Make sure you clean up the ends of the cables before you install a new battery to ensure good contact with the battery terminals. Do not install a cheap battery because it will probably not last more than a couple of years. A very good battery when properly maintained will last 3-4 years - sometimes more.

I would still have the alternator checked to ensure it is producing sufficient power. If it is not, power will be drawn from the battery when the car is running and the battery will discharge. I do not think there is a problem with the alternator from what you have said.

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I have an on going intermittent starting problem . sometimes car starts great and runs great . but sometimes engine just cranks and does not start. it may start in an hour or a day later , but sometimes it...


I had a problem like yours on my 96 towncar and after literally months of replacing the wrong parts.
I bought a crank shaft sensor and crawled under the car to try and install it. Looking at how oily it appeared I unplugged the wires from it and cleaned both the wire plug and the sensor with some electrical contact cleaner available at most auto parts stores , and that was over a year ago and the problem has not returned since then. The sensor is located on the passenger side just behind the harmonic balancer under the front end of the motor. If yours is oily it would be worth a try.
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tnx 4 using fixya,

drcool

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