valves/cyclinder head long term reports - Toyota Yaris Forums

regal · 05-20-2011, 08:58 PM

When I bought my Yaris it was for a long term vehicle (hoping 20+ years). The one weakness I identified was the cylinder head design. I was very surprised with the shimmed mechanical valves. Adjusting valves on this car is almost out of the question for a DIYer unless you invest in a bunch of shims.

My car is at 30K, I notice a little ticking. But I am wondering if anyone has had a valve wear out of adjustment and what milage it takes for that to occur? Just looking for feild reports/discussion.

auxmike · 05-20-2011, 10:24 PM

Yeah, most cars get hydraulic valves these days!

Happy Little Pony · 05-21-2011, 04:42 PM

Quote:

Originally Posted by regal

When I bought my Yaris it was for a long term vehicle (hoping 20+ years). The one weakness I identified was the cylinder head design. I was very surprised with the shimmed mechanical valves. Adjusting valves on this car is almost out of the question for a DIYer unless you invest in a bunch of shims.

My car is at 30K, I notice a little ticking. But I am wondering if anyone has had a valve wear out of adjustment and what milage it takes for that to occur? Just looking for feild reports/discussion.

They've been making this engine for about a decade now. If there were serious problems we'd probably have heard about them by now. From what I have heard, the valve lash is something you CHECK at about 100,000 miles and it may or may not need adjustment.

In any case, I was always under the impression that some ticking was good. No ticking means your valves have stretched and are now too long.

schume · 05-21-2011, 11:03 PM

I've wondered about the valves. Mine seems pretty noisy, but I don't have anything to compare it to. I guess I need to visit a few Yaris owners and listen to their engines idle.

05-20-2011, 08:58 PM	#1
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	valves/cyclinder head long term reports When I bought my Yaris it was for a long term vehicle (hoping 20+ years). The one weakness I identified was the cylinder head design. I was very surprised with the shimmed mechanical valves. Adjusting valves on this car is almost out of the question for a DIYer unless you invest in a bunch of shims. My car is at 30K, I notice a little ticking. But I am wondering if anyone has had a valve wear out of adjustment and what milage it takes for that to occur? Just looking for feild reports/discussion.

05-20-2011, 10:24 PM	#2
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	Yeah, most cars get hydraulic valves these days! __________________ Never take eyes off opponent - Bruce Lee

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05-21-2011, 11:03 PM	#4
schume Drives: 2010 Yaris LB Join Date: Jan 2011 Location: PNW Posts: 29	I've wondered about the valves. Mine seems pretty noisy, but I don't have anything to compare it to. I guess I need to visit a few Yaris owners and listen to their engines idle.