Carbon Cleaning Procedure

1. Bring engine to normal operating temperature, then shut engine off.

CAUTION:
PROVIDE A SEPARATE FEED TUBE FOR THIS PROCEDURE. DO NOT USE ANY OF THE VEHICLE'S VACUUM HOSES FOR FEEDING CLEANER INTO THE ENGINE. DETERIORATION OF THE VEHICLE'S VACUUM HOSES MAY RESULT.

2. Obtain a 610 mm (2') length of 1/8" I.D. vacuum hose for use as a feed tube for the carbon cleaner.





3. Connect one end of the feed tube to the purge control vacuum port on the upper intake manifold (Figure 4) and place the other end of the feed tube in the can of Carburetor Tune-up Cleaner (D9AZ-19579-BA).

CAUTION:
THE CARBURETOR TUNE-UP CLEANER MUST BE FED INTO THE ENGINE THROUGH THE CORRECT PORT AND THE FEED RATE MUST BE SUCH THAT AT LEAST 20 SECONDS IS REQUIRED TO EMPTY A CONTAINER. A FASTER FEED RATE MAY RESULT IN LIQUID ACCUMULATION IN THE ENGINE CYLINDERS, RESULTING IN HYDRAULIC LOCK-UP AND POSSIBLE ENGINE DAMAGE.

4. Pinch the feed tube with clamping pliers to prevent suction during engine start-up.

5. Restart the engine.

WARNING:
A LARGE AMOUNT OF EXHAUST SMOKE WILL BE PRODUCED IN STEP 6 OF THIS PROCEDURE. USE AN EXHAUST HOSE TO VENT THE SMOKE.

6. Allow the idle to stabilize, then:

a. Feed the cleaner into the engine by releasing the pliers while maintaining engine speed between 1500-3000 rpm until halt of the cleaner is used.

NOTE:
REGULATE THE CARBON CLEANER FEED RATE BY PARTIALLY KINKING THE FEED TUBE.

b. Allow the idle to drop; engine should stall. If it does not, shut engine oft.

7. Let vehicle sit for at least 6 hours, or up to 24 hours. This allows the cleaner to saturate the carbon in the combustion chamber.

8. Flush the remaining carbon from the engine by repeating Steps 1-6, using the remaining cleaner. Do not let the engine stall.

9. Remove the feed tube and reconnect the purge control vacuum line.

NOTE:
AFTER PERFORMING A CARBON CLEANING PROCEDURE, THE OIL AND FILTER SHOULD BE CHANGED IN ORDER TO REMOVE ANY CONTAMINANTS IN THE OIL.

10. Take the vehicle on a 5-6 km (3-4 mile) test drive using the full rpm range to remove any remaining cleaner or carbon from the engine.

Let the vehicle sit for a minimum of 12 hours. Start the engine. If the engine noise is gone on start-up, revised cylinder heads are available for service. To order the revised cylinder heads call: Cylinder Head Exchange Program, (800) 829-3353 - 9:00AM-5:00PM EST.