Transcript Document

6525 EVAP Approved
Enhanced EVAP Phase-in
1996 ----- 20%
1997 ----- 40%
1998 ----- 90%
1999 ---- 100%
Manufacturers with sales less than 10,000 vehicles per year are
exempt until 1999 when 100% compliance is required.
The typical non-enhanced EVAP system contains the following components:
EVAP emission pressure control valve.
Vented canister.
Do you see the words “Gas Cap” here?
Diagnostic switch
EVAP purge solenoid.
The Enhanced EVAP System uses the following components:
Evaporative system canister.
Fuel tank pressure sensor.
Canister purge solenoid.
Canister vent solenoid.
Service port.
Fuel cap.
Fuel level sensor.
Do you know
anybody that
has changed a
gas cap?
Using an EVAP-approved smoke machine isn’t just recommended, it’s
now required by DaimlerChrysler, Ford, General Motors, Land Rover,
Saab and Saturn. More approvals are pending.
$
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P2422
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$
$
$
$
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PO446
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Let’s put the
numbers to
work for you!
P0442
CHECK
ENGINE
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P0456
Are EVAP codes something that happen often?
The right tool for the top three most common Codes
Top 10 DTCs in Vehicles with Less Than 75,000 Miles (CA)
1. P0171 8.88% System too lean -- Bank 1
2. P1443 7.45% Ford EVAP Control Valve Failure
3. P0455 7.16% Gross EVAP Leak
4. P0135 5.44% O2 Sensor Heater Circuit
5. P0141 5.16% O2 Sensor Heater
6. P0301 5.16% Misfire Cylinder #1
7. P0300 4.30% Random Misfire
8. P0420 4.30% Low Catalyst Efficiency – Bank 1
9. P0134 3.44% O2 Sensor No Activity
10. P0340 3.44% Camshaft Pos. Sensor Malfunction
This information is from the Clean Air Conference 2002 Breckenridge, Colorado
Unlike traditional general-purpose smoke machines,
the EVAP-approved units use an inert gas like
Nitrogen for testing the EVAP systems.
Where can you get a
Nitrogen tank ?
WWW.PRAXAIR.COM
800-PRAXAIR ( 772-9247)
Enter Zip Code
How Long Will A Tank Last ?
300 cu-ft. = 300 5-Minutes Tests
You can use shop air for all general purpose leak testing.
Do you sell this with the 6285 LeakTamer?
Why not?
Caution
Must remove core and
DON’T LOOSE IT !
Clockwise to remove
Put smoke supply hose
in good and tight
Now we are ready
to find leak(s)
Intake
Manifold
Disconnect the hose between the Purge Valve
and Charcoal Canister, at or as close as you can
to the Purge Valve. Insert the EVAP tester supply
line into the hose that is going to the Charcoal
Canister.
Close “Canister Vent Valve” and continue
testing the system.
Purge
Valve
No EVAP test port?
This test is done with
key on engine off
Charcoal
Canister
Canister
Vent
Valve
Fuel Tank
Canister Vent Valve
When smoke is put into the EVAP system (Canister Close Valve is closed) there should NOT be any
smoke exiting the Canister Close Valve.
This test procedure doesn’t test from the Purge Valve back to the engine.
Caution
The EVAP system is NOT to be tested with more than 13”
of Water Column (less than 1/2psi). The OE-approved
machines have a built-in regulator to handle this task.
General purpose smoke machines can produce 3 to 5 times
more pressure than recommended by the manufacturers.
Over pressuring the system can and will cause damage!
Look at the tag on the
service port 1psi Max
TEST
SMOKE
Observe reading
after ball stops
descending
FAIL / ÉCHEC / FALLA
PASS / SUCCÈS / PASE
Future
.040’’
020’’
.
The power of Quantifying
PO442 = .040”(Small Leak)
PO456 = .020”(Very Small Leak)
OE-approved EVAP machines have the ability to
quantify both PO442 & PO456 codes and give
you a pass / fail test in less than 2 minutes
Example: Select the setting of .040” or .020”
and adjust the red flag to calibrate to that setting.
Put the unit in the test mode and push the
remote button. With the canister vent valve
closed, wait for the ball to stop descending. If
the ball stops above the red flag, the leak(s) are
greater than calibrated.
Fail
Pass
P0442
CHECK
ENGINE
P0456
1. P0171 8.88% System too lean -- Bank 1
2. P1443 7.45% Ford EVAP Control Valve Failure
3. P0455 7.16% Gross EVAP Leak
OE approved + Check Engine Lights + Top 3 Codes
+ To Quantify + Best Value + THE ONLY WAY =
The
Answer
6525 EVAP Approved