Quote:
Originally Posted by n4mwd
Yes, its a test to see if you jumped a tooth. If it did, you just have to jump it back the other way. No big deal to do it right. If the IN and EX line up right, then you're good.
If its still in one piece, then you didn't break it. The chain is pretty tough.
Count a certain number of links between the two cam sprockets. Always count that same number - whatever it is. Measure the length with a caliper. Write it down and rotate the crank a little bit. Repeat until you get all the way around the chain. It might also be useful to tie a little piece of thread at your starting link so you know when you've gone all the way around. You are looking for noticeable differences in the length between the same number of links at different positions on the chain. Then with a little math, you can extrapolate to figure out if your chain is out of spec according to the manual.
I have never heard of a cam chain breaking on this engine, but they will stretch. I think when you hit 50K miles, you are supposed to change them regardless.
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What I do when I check valve clearances is mark the chain and cam sprockets with a permanent marker so that the marks line up when I put them back in. You just wipe the oil off the area and mark away. Another method is to count 18 links between the front exhaust cam sprocket to the rear of the intake sprocket.