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Cam and Crank shaft timing position

Hi all,

I've posted previously about a timing belt job I did on my 93 Toyota Corolla DX, 203,000 miles (automatic.) (

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)Since I've only owned the car for a short period, I've been suspiciousof a slight engine vibration. From the research I've conducted, thisappears to be very normal. I simply have not owned the car longenough to remember if there was a vibration or not before I did thetiming belt job...

In any case, my speculation got the better of my and I decided to pull the cam cover and see if the crank and cam timing tic marks match up. Since its impossible to describe, I set the crank shaft pulley at 0 degrees and took the following pictures:

side view:

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top view:
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As you can tell from the side picture, the cam marking is virtually dead on. However, it appears a bit left of center. Its not so obvious from the top view.

If I move the crank shaft so the cam timing mark is more center (which is a literally a millimeter of movement towards the right), the crank moves a few degrees. I don't have much faith in the plastic timing cover tho...when I removed it, it had some damage that I repaired - therefore its shape may not be 100%.

In any case, my big concern and question is whether the pics fall within the realm of acceptability. I was sure that it was lined up when I did the job...but at tight angles its kinda tough to see straight on.

Thank you all again. You guys are the only mechanics I trust.

Tom

Reply to
SlyckTom
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if there's a central spark plug above the piston, you could use a dial indicator to find TDC. you read the piston's highest travel point. then turn the crank one way til it moves a millimeter (or any fixed amount) . mark the crank pulley. then move the crank the other direction til the same movement occurs. mark the pulley. split the two marks, and that is tdc. that's an accepted practice where the tdc is not reliably marked.

in the pictures, the offset seems to be less than one tooth on the sprocket. i seriously doubt the vibrations are from this area. good luck, sammmm

Reply to
SAMMM

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