Econoline E150 1/2 Ton V8-5.4L CNG VIN M (1998)
g.
Restart engine, verify the problem has been corrected. Return vehicle.
3.
Start and run engine to a minimum temperature of 75° C (165° F) (MST or ECT depending on vehicle model year) to ensure engine stability.
4.
Shut off AC and Defrost.
5.
Disconnect the electrical connection to the CNG tank valve and run the engine until it auto switches to gasoline.
6.
Following procedure in GFI Service Manual, bleed off residual CNG line pressure.
7.
Remove coalescent filter body and drain any contaminants. Wipe the inside with a clean cloth.
8.
Fill to within 1/4 inch of the top with isopropyl alcohol with coalescent filter in place (alcohol must be at least 90% by volume).
9.
Re-install coalescent filter body (ensure filter element is still in place).
^
Torque for Filter Body: 40 +/- 6 N.m (30 +/- 5 Lb-ft)
^
Torque for Drain Plug: 10 +/- 3 N.m (8 +/- 2 Lb-ft)
CAUTION
ENSURE THAT ANY LINES THAT WERE DISCONNECTED IN STEP "F" ARE RE-CONNECTED.
10.
Re-connect the CNG tank valve harness.
11.
Key on, check for leaks at the coalescent filter housing.
12.
Start and run vehicle.
13.
Hook up NGS and monitor RPM.
14.
Increase the RPM to between 1150 and 1300, maintain this RPM.
15.
Note time, run for 15 minutes.
16.
After 15 minutes, shut off engine.
17.
Restart engine, verify the problem has been corrected, if it has not been resolved, repeat the procedure.
OTHER APPLICABLE ARTICLES: 03-10-3
SUPERSEDES: 01-23-1
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 602300, 603300, 607000, 607400, 607500, 608000, 608400, 608500, 609000, 609400, 609500, 610000, 610500, 611000, 611500,
612000, 612500, 614000, 614500, 698298
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