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Truckdude
Guest
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 Posted:
Sat Dec 03, 2005 5:33 am Post subject:
Re: Corolla pinging - old timing belt? |
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"Ben Phlat" <bphlat62@yahoo.com> wrote in message
news:4mb1p11raogamsj1ab24d5ure8mholr5s8@4ax.com...
| Quote: | On 2 Dec 2005 12:05:01 -0800, "Dan" <drnwnr@hotmail.com> wrote:
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
Don't Corolla's have a timing chain and not a belt?
Not sure about a 95, but pretty sure my 98 Corolla
is a chain.
--Ben
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I have a '95 with the 4A-FE. It has a timing belt.
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Philip
Guest
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| Posted:
Sat Dec 03, 2005 9:18 am Post subject:
Re: Corolla pinging - old timing belt? |
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<HLS@nospam.nix> wrote in message
news:0r2kf.34930$6e1.1653@newssvr14.news.prodigy.com...
| Quote: |
"Ben Phlat" <bphlat62@yahoo.com> wrote in message
news:4mb1p11raogamsj1ab24d5ure8mholr5s8@4ax.com...
Don't Corolla's have a timing chain and not a belt?
Not sure about a 95, but pretty sure my 98 Corolla
is a chain.
--Ben
Would have to look it up..( in fact, I will)
Chains certainly have their advantages,
but they can stretch too.
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Neither stretches significantly less than the other. |
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Philip
Guest
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| Posted:
Sat Dec 03, 2005 9:18 am Post subject:
Re: Corolla pinging - old timing belt? |
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"Gord Beaman" <gord@islandtelecom.com> wrote in message
news:nojgr1t1vl43e6pchqp34bt2li5ajl7c6s@4ax.com...
| Quote: | High Tech Misfit <me@privacy.net> wrote:
Ben Phlat wrote:
Don't Corolla's have a timing chain and not a belt?
Not sure about a 95, but pretty sure my 98 Corolla
is a chain.
I believe '98 was the first year that the Corolla had a timing chain.
But aren't interference?...I thought that an engine with a chain
was interference...with a belt wasn't...?
--
-Gord.
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Belt Corollas are non interference
Chained Corollas are interference.
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Philip
Guest
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| Posted:
Sat Dec 03, 2005 9:19 am Post subject:
Re: Corolla pinging - old timing belt? |
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"Ben Phlat" <bphlat62@yahoo.com> wrote in message
news:4mb1p11raogamsj1ab24d5ure8mholr5s8@4ax.com...
| Quote: | On 2 Dec 2005 12:05:01 -0800, "Dan" <drnwnr@hotmail.com> wrote:
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
Don't Corolla's have a timing chain and not a belt?
Not sure about a 95, but pretty sure my 98 Corolla
is a chain.
--Ben
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Corolla have a cam BELT until the new 1ZZ engine appeared in 1998. |
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Philip
Guest
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| Posted:
Sat Dec 03, 2005 9:19 am Post subject:
Re: Corolla pinging - old timing belt? |
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"Dan" <drnwnr@hotmail.com> wrote in message
news:1133544688.753335.53540@z14g2000cwz.googlegroups.com...
| Quote: | Hi,
'95 Corolla 4A-FE, 80k miles, pings under load (when climbing hill),
mainly on days when the air is dry. It also seems to have a harder time
climbing.
The car eats some 1/2 quart of oil between changes.
I tried several brands of fuel additives with no improvement.
Timing belt is the original. Could changing the belt fix the pinging?
Or maybe the timing needs to be adjusted?
How is this done on a 95 Corolla?
Thanks.
|
This engine has no tendency to spark knock.
Even a loose timing belt will not bring about spark knock (pinging).
Forget about carbon deposits and octane increasing additives.
DO verify the base ignition timing is set according to the EPA sticker under
the hood.
The EGR system needs to be verified as functioning.
The EGR dilutes fresh air/fuel charge with exhaust gases. This has the
effect of lowering the amount of heat generated during combustion and ....
the tendency for preignition and detonation to occur.
The EGR delivery passage must flow lots of exhaust.
The EGR diaphragm must be sound.
The EGR diaphragm must recieve vacuum from the throttle body as the throttle
is opened.
The EGR transducer valve and bleed solenoid must be functioning as designed.
OTHERWISE, the engine will spark knock (ping) as you describe.
--
- Philip |
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Dan
Guest
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| Posted:
Sat Dec 03, 2005 4:14 pm Post subject:
Re: Corolla pinging - old timing belt? |
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| Quote: | This engine has no tendency to spark knock.
Even a loose timing belt will not bring about spark knock (pinging).
Forget about carbon deposits and octane increasing additives.
DO verify the base ignition timing is set according to the EPA sticker under
the hood.
The EGR system needs to be verified as functioning.
The EGR dilutes fresh air/fuel charge with exhaust gases. This has the
effect of lowering the amount of heat generated during combustion and ....
the tendency for preignition and detonation to occur.
The EGR delivery passage must flow lots of exhaust.
The EGR diaphragm must be sound.
The EGR diaphragm must recieve vacuum from the throttle body as the throttle
is opened.
The EGR transducer valve and bleed solenoid must be functioning as designed.
OTHERWISE, the engine will spark knock (ping) as you describe.
--
- Philip
|
There's no EGR on my Corolla. I'll have the base ignition timing
checked.
Any idea why it may be out of spec? The distributor and timing belt
have never been touched. Is it possible there's something wrong with
the ignition advance? How does it work in this model? |
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Ray O
Guest
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| Posted:
Sun Dec 04, 2005 9:18 am Post subject:
Re: Corolla pinging - old timing belt? |
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"ANTHONY DIODATI" <mrbreezeet1@verizon.net> wrote in message
news:hztkf.736$Bs2.408@trnddc01...
| Quote: |
If these all check out OK, then you may have internal engine deposits.
--
If that's the case, a top engine cleaner like GM used to sell would help.
Have to figure a way to feed it through though, unless its a Throttle Body
Fuel Injection system
Tony
It is probably not engine deposits and the Corolla does not have a throttle |
body fuel injection system.
--
Ray O
correct the return address punctuation to reply |
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ANTHONY DIODATI
Guest
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| Posted:
Sun Dec 04, 2005 9:18 am Post subject:
Re: Corolla pinging - old timing belt? |
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| Quote: | If these all check out OK, then you may have internal engine deposits.
--
If that's the case, a top engine cleaner like GM used to sell would help. |
Have to figure a way to feed it through though, unless its a Throttle Body
Fuel Injection system
Tony |
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tbl
Guest
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| Posted:
Mon Dec 05, 2005 7:19 am Post subject:
Re: Corolla pinging - old timing belt? |
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On Fri, 2 Dec 2005 16:07:37 -0600, "Ray O"
<rokigawa@tristarassociatesDOT.com> wrote:
| Quote: |
"Dan" <drnwnr@hotmail.com> wrote in message
news:1133553901.730284.180650@g43g2000cwa.googlegroups.com...
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
If you did not use Nippon Denso or NGK plugs, consider changing to Nippon
Denso plugs. Toyotas tend to have ignition problems with other brand plugs
and ignition parts.
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Any idea(s) as to what's different about them? |
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Scott in Florida
Guest
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| Posted:
Mon Dec 05, 2005 9:16 am Post subject:
Re: Corolla pinging - old timing belt? |
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On Mon, 05 Dec 2005 01:19:14 GMT, tbl <hate@ThatSpam.net> wrote:
| Quote: | On Fri, 2 Dec 2005 16:07:37 -0600, "Ray O"
rokigawa@tristarassociatesDOT.com> wrote:
"Dan" <drnwnr@hotmail.com> wrote in message
news:1133553901.730284.180650@g43g2000cwa.googlegroups.com...
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
If you did not use Nippon Denso or NGK plugs, consider changing to Nippon
Denso plugs. Toyotas tend to have ignition problems with other brand plugs
and ignition parts.
Any idea(s) as to what's different about them?
|
Yes....they work and others don't...
--
Scott in Florida |
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Philip
Guest
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| Posted:
Mon Dec 05, 2005 9:19 am Post subject:
Re: Corolla pinging - old timing belt? |
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"tbl" <hate@ThatSpam.net> wrote in message
news:sb57p194nvvk2lcdo8r7gv18htbobuvlhi@4ax.com...
| Quote: | On Fri, 2 Dec 2005 16:07:37 -0600, "Ray O"
rokigawa@tristarassociatesDOT.com> wrote:
"Dan" <drnwnr@hotmail.com> wrote in message
news:1133553901.730284.180650@g43g2000cwa.googlegroups.com...
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
If you did not use Nippon Denso or NGK plugs, consider changing to Nippon
Denso plugs. Toyotas tend to have ignition problems with other brand
plugs
and ignition parts.
Any idea(s) as to what's different about them?
|
NO differences that have any impact of spark knock.
--
- Philip |
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Philip
Guest
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| Posted:
Mon Dec 05, 2005 9:19 am Post subject:
Re: Corolla pinging - old timing belt? |
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"Scott in Florida" <JustAsk@Florida.com> wrote in message
news:78c7p15qnc2d80jkqp220600q14duksebf@4ax.com...
| Quote: | On Mon, 05 Dec 2005 01:19:14 GMT, tbl <hate@ThatSpam.net> wrote:
On Fri, 2 Dec 2005 16:07:37 -0600, "Ray O"
rokigawa@tristarassociatesDOT.com> wrote:
"Dan" <drnwnr@hotmail.com> wrote in message
news:1133553901.730284.180650@g43g2000cwa.googlegroups.com...
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
If you did not use Nippon Denso or NGK plugs, consider changing to Nippon
Denso plugs. Toyotas tend to have ignition problems with other brand
plugs
and ignition parts.
Any idea(s) as to what's different about them?
Yes....they work and others don't...
--
Scott in Florida
|
Rubbish.
--
- Philip |
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Ray O
Guest
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| Posted:
Mon Dec 05, 2005 9:19 am Post subject:
Re: Corolla pinging - old timing belt? |
|
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"tbl" <hate@ThatSpam.net> wrote in message
news:sb57p194nvvk2lcdo8r7gv18htbobuvlhi@4ax.com...
| Quote: | On Fri, 2 Dec 2005 16:07:37 -0600, "Ray O"
rokigawa@tristarassociatesDOT.com> wrote:
"Dan" <drnwnr@hotmail.com> wrote in message
news:1133553901.730284.180650@g43g2000cwa.googlegroups.com...
Fully agree that he should pay attention to the recommended change
frequency for belts. A loose belt and or tensioner could make the car
drivability poor.
I suspect he has deposits in the cylinder , OR the spark plugs are
carrying
so
much ash that he is getting preignition.
Would we care to wager when the spark plugs were changed?
The spark plugs were changed 1 year ago.
If you did not use Nippon Denso or NGK plugs, consider changing to Nippon
Denso plugs. Toyotas tend to have ignition problems with other brand
plugs
and ignition parts.
Any idea(s) as to what's different about them?
|
I have no clue what the differences are, just experience that tells me that
some people experience ignition-related problems with aftermarket ignition
parts. To be honest, I have not heard of pinging complaints that were
caused by aftermarket plugs.
I agree with Phillip and qslm that incorrect base timing or a poorly or
non-functioning EGR are the most likely causes of the OP's pinging.
--
Ray O
correct the return address punctuation to reply |
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