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08-05-2009, 05:06 PM | #1 |
Drives: 07' Sedan Join Date: Apr 2009
Location: MN
Posts: 22
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Valve Adjustments
Has anyone ever inspected their valve clearance? If so, did you need to make adjustments? Im right around the 60,000 mile mark so I should probably do this soon.
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08-05-2009, 05:54 PM | #2 | |
Drives: 2013 Chevy Spark 1LT 5-speed Join Date: Oct 2008
Location: Oklahoma
Posts: 1,185
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Quote:
Are you getting valvetrain noise? You don't adjust them, you put spacers in where they're out of spec, after you remove the cams. Ouch. |
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08-05-2009, 06:29 PM | #3 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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I thought our valves were self-adjusting -- no?
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
08-05-2009, 07:00 PM | #4 | |
Drives: '07 Yaris, '12 GLI Join Date: May 2007
Location: Ottawa
Posts: 100
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No, not self-adjusting. According to the FSM the lifters are to be replaced when valve clearances must be adjusted:
Quote:
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08-06-2009, 12:02 AM | #5 |
'07 to '12:2 wipers to 1?
Drives: '12 5-door LE & '14 5-door LE Join Date: Apr 2007
Location: Orlando
Posts: 1,999
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^^^ouch, per lifter pricing is expensive too right?
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08-06-2009, 04:42 AM | #6 |
Drives: yaris 08 sedan Join Date: Oct 2008
Location: Montreal Canada
Posts: 1,286
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Just sold an 01 Echo with 220,000kms, never knew i was supposed to check the valves I'd say unless your valves are making a lot of noise just leave em alone.
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08-06-2009, 07:47 AM | #7 |
Half a Bubble Off Plumb
Drives: 2009 Yaris Sedan Join Date: Mar 2009
Location: Bristol, Tennessee, USA
Posts: 1,593
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That's my plan.
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08-06-2009, 05:00 PM | #8 |
Drives: 2013 Chevy Spark 1LT 5-speed Join Date: Oct 2008
Location: Oklahoma
Posts: 1,185
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"Inspect" is part of the 60,000 maintenance, says to listen for excessive tappet noise and look for engine vibration. Clearance can be measured with a gauge, but cams have to be removed if any are found out of spec. Just multiply about 6 hrs X local labor rate, then start adding the price of lifter(s)... gets real expensive in a hurry.
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08-06-2009, 06:31 PM | #9 |
Our off road vehicle
Drives: 2009 Yaris 3dr Join Date: Apr 2009
Location: NJ
Posts: 198
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my service book on my 2009 calls for it @120K miles. At that point the car will probably be worth so little I'd be inclined to just drive until it dies.
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08-08-2009, 05:55 AM | #10 |
Drives: yaris 08 sedan Join Date: Oct 2008
Location: Montreal Canada
Posts: 1,286
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If you read PK's link on what that checkup entails you'll see that its an audio inspection meaning if your valves arent making any abnormal noise then they're ok.
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08-08-2009, 11:02 AM | #11 | |
Drives: '08 Yaris Join Date: Oct 2008
Location: SoCal (Jamul)
Posts: 97
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Quote:
Don't depend on noise to determine if the valves are OK. It can't be done. |
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08-08-2009, 11:49 AM | #12 |
Drives: yaris 08 sedan Join Date: Oct 2008
Location: Montreal Canada
Posts: 1,286
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Heres the link to the maintainance schedule check out the 7th item in the 64k inspection http://xws.xtime.com/xmmmenu/?varian...estimate=false
I agree not much of a valve inspection. |
08-08-2009, 01:51 PM | #13 |
Drives: 2013 Chevy Spark 1LT 5-speed Join Date: Oct 2008
Location: Oklahoma
Posts: 1,185
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And Mitchell repair says to LISTEN for noise, then check for engine smoothness, before going to the actual trouble of pulling cyl head cover and checking clearance with a gauge.
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08-08-2009, 01:54 AM | #14 |
Drives: '07 Yaris HB Join Date: Apr 2006
Location: Sudbury, Canada
Posts: 520
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I don't know if I've had my valve clearance ever checked .... how can I tell if something is up? I'm already at 131,000km lol.
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08-09-2009, 02:02 AM | #15 |
Drives: '08 Yaris Join Date: Oct 2008
Location: SoCal (Jamul)
Posts: 97
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Yeah, I read that link, but I still don't agree with it. Noise will only occur with increasing clearances, such as when the cam or spacers wear. But wear on the valve itself or the valve seat, will DECREASE clearances, resulting in less noise. By the time the engine starts running rough (due to lowered compression from the valve not closing), the damage has already been done, i.e. a burned valve.
I've seen burned valves, and they can literally look like someone took a cutting torch to them. This happens because if the valve isn't properly seated, it can't cool off, and will become as hot as the exhaust gasses which are above the melting point of metal. The moral of the story is to check the clearances with a feeler, and don't wait for them to become noisy to do so. Something odd I noticed about that site is that it calls for the valve clearance check at 64,000 km (roughly 40,000 miles). My 2008 Yaris "Scheduled Maintenance Guide" doesn't call for a valve clearance check until 60,000 miles.... |
08-09-2009, 02:19 AM | #16 |
whose the one with like 350,000 miles on his car? ask if he's had that check done... I don't think that's been an issue with higher mileage cars. I've got a new one again with 20k on it so I've just changed oil haven't even considered that stuff at all.
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08-09-2009, 08:03 AM | #17 |
DARK PHASE OF THE MOON
Drives: 07 liftback Join Date: Apr 2009
Location: the Boondocks, NC
Posts: 993
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Run it til it drops and DIY plug and play a salvage engine for less than the cost of a skilled factory valve adjustment?
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08-09-2009, 02:44 PM | #18 |
Drives: yaris 08 sedan Join Date: Oct 2008
Location: Montreal Canada
Posts: 1,286
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With todays overhead cam engines what exactly do you adjust?,if the cam is opening the valve wouldnt the cam ultimately wear down causing the valve to not open as much as when it was new, and wouldnt a whole new cam shaft be needed to remedy the situation.,
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