Quote:
Originally Posted by chewyspark47
Long story short, had an old school look at new school engine and I trusted him because he's mechanic by trade. He cranked it bent the valves, turns out I had it right before he messed with it... expense lessons learned.
So no truth behind the "valves and lifters need time to work themselves in" statement?
I definitely will if nothing improves. Ordered a good scanner to look at my baby myself and see what I can do or at least find out.
I've asked 2 people and they've told me that it definitely sounds like lifters.
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At this point it's a wait and see kind of thing if it seems to be running good otherwise.
Just an FYI, there are no lifters in these engines, these are over head cam engines, the valves have cups on top of them and they have various thickness depending on how thick they need to be to obtain the correct valve clearance.
That being said if he didn't mark these cups when he removed them so they went back on the same valve, then that could be very well the issue, OR the new valves may need a different thickness cup to get the clearance correct.
Did the same person who damaged the valves do the valve replacement, or did a mechanic who knows how these engines work do the valve work??
Whoever did the work I hope they at least had a "real" Toyota shop manual to know how it's suppose to be done,!!
There's nothing wrong using an "old school mechanic" IF and only IF that mechanic has the correct manuals to know the proper procedures and specs, I know this for a fact because I'm an old school mechanic, but I'm a good one and know to use a manual to get it right on very technical procedures, even the best new school mechanics have to use shop manuals because there's just to much step by step and specs for anyone to ever memorize or just already know unless they do the same procedure every day over and over again, this holds true even on old school equipment not just new school equipment.