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Your 1998 Mazda 3.1 liter engine does not have timing marks on the crankshaft. The timing marks are on the engine flywheel.
line the timing mark from the crankshaft sprocket up with the camshaft sprocket and tada!
If you are asking about valve timing there are two marks. One on the top which is a mark on the cam pulley which is lined up with the mark on the head and there is a mark on the crankshaft pulley which is aligned with a mark on the oil pump housing.
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On my 2000 Metro with a 1.3L the mark and slot marked with the "E" are used.
2.4l dohc balance shaft timing mark, crankshaft sprocket timing mark,oil pump timing mark and camshaft TWO timing marks 2.4l sohc balance shft timing mark, crankshaft timing mark, oil pump timing mark and ONE camshaft timing mark. it is complicated only that everymark must be bang on, if not the pistons will hit the valves and YOU get to rebuild engine.
There is a small bump on the back of the timing belt backing plate that correlates with the mark on the camshaft. The crankshaft mark lines up with a small slit in the case in about the 4 o clock position.
I thought 1997 was the last year they made the Ford Aspire.
there will be a timing mark on the harmonic balancer. and a timing tab on the timing chain cover. point your timing light at the timing tab and you should see the timing mark on balancer. if not timing is way out.markstang.
There is no advance for a 1998 Dodge 5.2. You just set the distributor at the mark on TDC and the computer takes care of the rest. It is set to 0 degrees with a scan tool. It can not be done with a timing light.
I'm not familiar with your particular model, but most crankshafts (CS) don't have a visable timing mark on them. Today's cars use a sensor that runs by a point on the CS in order to achieve proper timing. If the timing chain gear is still on the CS then you can look here. On this gear you will notice a dot/notch on one of the teeth. When this dot/notch is at the 12:00 position, the #1 cylinder piston is at top dead center (tdc). I cannot say this applies to all engines. I always pull the sparkplug out of the #1 cylinder and double check to make sure everything agrees.
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