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Torque specs on valve cover gasket bolts on 1989 Toyota Corolla
I don't have the figure you need on file but i seem to remember the bolts are 6 mm, though it has been a while since I saw one of those cars.
Valve or cam cover bolts aren't usually torqued because they aren't critical and it is a matter of letting experience and good sense prevail.
If a torque figure is really wanted then it will be a matter of just a few pounds-inches. There are charts a-plenty freely available that will provide you with the maximum torque suggested for any size of bolt but again good sense must prevail and the actual figure used in practice, especially if the bolt is oily will be probably only half of the maximum.
For a 6 mm bolt this will be in the region of 25 inch-pounds.
on Feb 06, 2015
I have a toyota nadia d four engine with aproblem of not starting.changed pistons,valves,plugs,head gascket and oil.after that the car is cranking but not starting
If you give it time to cool off between starting attempts, it should hold up to it. If you use the starter for 15 seconds trying to start it, then give it a full minute to cool off before trying again.
Do you have compression in all cylinders? That and spark and gas is all a good-timed engine needs in order to run. Actually I would do it in this order: check for spark going to the spark plugs, if good, check that gas is getting into engine (carb or fuel injected? you would see gas coming out of either one- down the throat of the carburetor, or out the bottom of the fuel injector in a cone pattern, while cranking the engine over and watching). If spark and gas are good, then better check compression. See if your work really sealed the cylinder chambers. A compression test will verify this. Cause the next thing you will have to check is if the valve timing is right. You will need to make sure the timing marks are spot on. This may be a tedious job. Removing a few parts to check the timing marks.
So just remember, spark, gas, and compression. that's what the cylinders need to fire and run, but the timing has to be correct.
on Jan 12, 2015
No start after replacing distributor
Please do the following:
- Check resistance of the high tension cords ( DMM selector range on 10 K or 100 K Ohms, resistance reading = 10 - 25 K Ohms)
- Check rotor for damage, cracked or broken.
- Check the distributor cap for cracks or corroded terminals.
- Check the ignition module inside the distributor assembly.
- If the problem persists, replace the distributor assembly with a good known one.
on Mar 22, 2014
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