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From: Tegger on 27 Mar 2007 17:10
Hammo <hbaj2006(a)aapt.net.au> wrote in
news:C22ED1C0.1E5A9%hbaj2006(a)aapt.net.au:

>
>
>
> On 27/3/07 9:13 AM, in article Xns98FFC378546FEtegger(a)207.14.116.130,
> "Tegger" <tegger(a)tegger.c0m> wrote:
>
>
>>>
>>> The subject on your post suggest that your 1997 Tercel is burning
>>> oil on startup. Adjusting valve lash will not affect oil
>>> consumption.
>>>
>>> With DOHC and 4 valves per cylinder, my guess is that valve lash is
>>> adjusted with shims, and yes, valve lash should be adjusted while
>>> the engine is hot.
>>
>>
>>
>> Valve lash is adjusted **COLD**.
>
> I can appreciate why that may be the case, however, my Corolla 4AC
> requests the motor, warmed to normal op temp.



What's your source for that?

All the 4A engines I've even known have required valve lash be set cold.
Toyota did not even give hot clearances, as far as I can find.




>>
>> The only time you would EVER adjust valves with the engine hot is on
>> pushrod engines. Pushrods lengthen with heat, so you have to adjust
>> the clearances when they're at their longest.
>
> That is one reason. How were those push rods operated?
>


By lifters riding on the camshaft, of course. Adjustment was by screw and
locknut at the rocker.


--
Tegger

From: Jimbo on 28 Mar 2007 09:24
On Mar 26, 7:16 pm, Tegger <teg...(a)tegger.c0m> wrote:
> "Jimbo" <jfro...(a)gmail.com> wrote in news:1174939013.333582.276400
> @o5g2000hsb.googlegroups.com:
>
> > How is the valve lash/clearance adjusted on a 97 Tercel? One source
> > suggested shims but most others said screwdriver and wrench
> > adjustment.
>
> Your engine uses shims on top of the valve spring buckets. Adjustment is a
> time-consuming job, but rarely needs to be done if the oil has been changed
> regularly.
>
> Check the clearances before thinking you need to adjust them.
>
> > The only concern was to do them while the engine is hot.
> > Can anyone clarify?
>
> Adjust **COLD**!
>
> And if you're burning oil on startup, your valve guide oil seals are shot.
> This is usually due to insufficiently frequent oil changes.
>
> --
> Tegger

So I did an oil and filter change using high mileage oil. First start
up was smoky but not excessively so. This morning, the exhaust
appeared less smoky and less blue than the last couple of weeks. Only
other factor is weather is much warmer this week than previously.
Engine still sounds noisier than usual but I haven't had time to look
into that.

From: peruano_andres on 28 Mar 2007 14:49
hey guys, i had found this new website http://tuningmyride.com u ask
any question or problem that you have with your car and they will
answer you with in 24 hours and its FREE!. thanks to them i found the
problem regarding my car.

From: Ray O on 28 Mar 2007 15:57

<peruano_andres(a)sympatico.ca> wrote in message
news:1175107765.496634.94050(a)d57g2000hsg.googlegroups.com...
> hey guys, i had found this new website http://tuningmyride.com u ask
> any question or problem that you have with your car and they will
> answer you with in 24 hours and its FREE!. thanks to them i found the
> problem regarding my car.
>

So what was the problem regarding your car?
--

Ray O
(correct punctuation to reply)


From: Hammo on 11 Apr 2007 11:07



On 28/3/07 7:10 AM, in article Xns9900AEA4766A2tegger(a)207.14.116.130,
"Tegger" <tegger(a)tegger.c0m> wrote:

> Hammo <hbaj2006(a)aapt.net.au> wrote in
> news:C22ED1C0.1E5A9%hbaj2006(a)aapt.net.au:
>
>>
>>
>>
>> On 27/3/07 9:13 AM, in article Xns98FFC378546FEtegger(a)207.14.116.130,
>> "Tegger" <tegger(a)tegger.c0m> wrote:
>>
>>
>>>>
>>>> The subject on your post suggest that your 1997 Tercel is burning
>>>> oil on startup. Adjusting valve lash will not affect oil
>>>> consumption.
>>>>
>>>> With DOHC and 4 valves per cylinder, my guess is that valve lash is
>>>> adjusted with shims, and yes, valve lash should be adjusted while
>>>> the engine is hot.
>>>
>>>
>>>
>>> Valve lash is adjusted **COLD**.
>>
>> I can appreciate why that may be the case, however, my Corolla 4AC
>> requests the motor, warmed to normal op temp.
>
>
>
> What's your source for that?
>
> All the 4A engines I've even known have required valve lash be set cold.
> Toyota did not even give hot clearances, as far as I can find.
>
>
The service manual for the vehicle. "Once vehicle has reached operating
temperature....."

A typo?

Hammo

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