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Old 07-08-2009, 12:35 PM   #1 (permalink)
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Found this over on MSF....

SMOKE FROM TAIL PIPES AFTER PROLONGED IDLE PERIODS

Applicable Models

Model Starting S/N Ending S/N Model Spec CX7 2007-2008 000001 209008 P/D BEFORE 2/15/2008 MAZDA6 2006-2007 000001 999999 ALL MAZDASPEED6 MAZDA3 2007-2008 000001 880368 P/D BEFORE 2/6/2008 Related Category/Subcategory/Symptoms

ENGINE / MECHANICAL / WHITE SMOKE,BLUE SMOKE
ENGINE / EMISSIONS SYSTEM / EXCESSIVE OIL CONSUMPTION
ENGINE / EMISSIONS SYSTEM / WHITE SMOKE,BLUE SMOKE
ENGINE / EMISSIONS SYSTEM / BLACK SMOKE
ENGINE / MECHANICAL / EXCESSIVE OIL CONSUMPTION

MTOL - 5505 Dealer Repair Information

Symptom and Conditions


Applicable Model(s) VINS

CX-7 JM3ER ****8* 209008 Produced before 2/15/08
MAZDASPEED6 ALL ALL
MAZDASPEED3 JM1BK ****8* 880368 Produced before 2/6/08


Some customers may experience white/blue smoke from their exhaust pipes
after prolonged idle periods and/or while driving in traffic at very
slow speeds.

This condition may be the result of the turbo's oil supply not being
able to adequately drain out of the turbo during long idle periods.

Vehicles having this concern should be diagnosed using the following diagnostics procedure.
Repair Procedure


1. Confirm that the proper maintenance intervals have been performed.

2. With the engine at normal operating temperature, allow it to idle
for an extended idle period.

Caution:
Closely monitor the engine coolant to the assure the engine does not Overheat.

3. If smoke from the exhaust is present after the extended idle period,
take before pictures of the smoke, then change the oil and filter
using 5W/40 (synthetic). After the oil change, in order to burn off
the oil that remains in the exhaust system, perform the following:
start the engine, check for oil leaks, then let it idle for 10
minutes, after the 10 minute idle period, increase the RPMs to 3000
for 1 minute, repeat idle test to confirm that no smoke returns.

A: If the smoke returns, contact the Technical Assistance Hotline
(Select option #2 for Major Assembly Authorization) with the oil
change history information, to attain an authorization for a turbo
replacement.

B: If smoke DOES NOT RETURN after the repeat idle test, NO other repairs
are to be performed at this time. Explain to the customer that MAZDA
is currently working on an improved positive crankcase valve (PCV)
system to reduce the engine crankcase pressures to allow the turbo's
oil supply to drain from the turbocharger more efficiently This fix
will be available approximately within 90 days and at that time the
oil will be changed back to 5W-30 and the improved PCV system will be
installed
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Old 07-08-2009, 12:44 PM   #2 (permalink)
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QUOTE
Quote:
Explain to the customer that MAZDA
is currently working on an improved positive crankcase valve (PCV)
system[/b]
Interesting
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Old 07-08-2009, 01:10 PM   #3 (permalink)
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a 40 weight will drain better?
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Old 07-08-2009, 01:23 PM   #4 (permalink)
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almost sounds too good to be true. If its true wouldnt every turbo mazda be getting a recall for the pcv...
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Old 07-08-2009, 02:04 PM   #5 (permalink)
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QUOTE (long101 @ Jul 8 2009, 01:23 PM)
Quote:
If its true wouldnt every turbo mazda be getting a recall for the pcv...[/b]
Don't count on it. Recalls cost big money, as they apply to all cars in and out of warranty. Recalls are usually reserved for safety-related problems that could cost the manufacturer big money in lawsuits.

I'm encouraged to see this TSB for the problem. Too bad for me I could never demonstrate the smoking issue for my dealer. Now that my car is almost 14,000 miles out of warranty, any fix will need to be financed by me
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Old 07-08-2009, 02:06 PM   #6 (permalink)
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Thats what it says but I highly doubt it. And im sure it will specify only to repair the pvc if the car smokes.
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Old 07-08-2009, 02:08 PM   #7 (permalink)
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I've only gotten my car to smoke once, I'm just waiting for it start up again. Are they really going to replace the pcv if we start bring in our cars that are smoking?
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Old 07-08-2009, 02:10 PM   #8 (permalink)
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QUOTE (aviator79 @ Jul 8 2009, 01:06 PM)
Quote:
Thats what it says but I highly doubt it. And im sure it will specify only to repair the pvc if the car smokes.[/b]
Wow!! Is this for real??
I have very little to no smoke, but if I went thinner I probalbly would. Hmmm..
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Old 07-08-2009, 02:42 PM   #9 (permalink)
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if you go thinner with your oil you are an idiot and run the risk of not only damaging your turbo but your engine as well.

my guess for the reason 5w40 oil doesn't smoke is because the oil is thick enough that it flows just right and doesn't cause that back up in the turbo, the flow in time is the same as the flow out time. where as with a thinner oil it is possible that more oil is flowing in then is flowing out.
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Old 07-08-2009, 03:10 PM   #10 (permalink)
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QUOTE (bova80 @ Jul 8 2009, 01:42 PM)
Quote:
if you go thinner with your oil you are an idiot and run the risk of not only damaging your turbo but your engine as well.

my guess for the reason 5w40 oil doesn't smoke is because the oil is thick enough that it flows just right and doesn't cause that back up in the turbo, the flow in time is the same as the flow out time. where as with a thinner oil it is possible that more oil is flowing in then is flowing out.[/b]
Excuse me sir, But I would like to get the new Mazda PCV system if it is a reality..
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