How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask EMRSR Your Own Question

EMRSR
EMRSR, Master Certified Service Manager
Category: Mercury
Satisfied Customers: 3010
Experience:  20 years with Ford
18136160
Type Your Mercury Question Here...
EMRSR is online now
A new question is answered every 9 seconds

1999 Mercury Cougar: V6 engine..I hear an air leak..sucking..injector

Resolved Question:

I have a 1999 Mercury Cougar with a V6 engine. I hear an air leak like the engine is sucking in air. I replace the upper and lower intake gaskets and checked the injector gaskets. This didn't resolve the problem what could I be missing?
Submitted: 4 years ago.
Category: Mercury
Expert:  EMRSR replied 4 years ago.

There is a procedure described in this TSB using a smoke machine, in many cases we need to go this route when you can not visually see the leak.

 

Driveability - Vacuum Leak Detection
Notes
Article No.
01-20-5

 

10/15/01

^DRIVEABILITY - DETECTING VACUUM LEAKS -
USING THE ROTUNDA VACUTEC 522 SMOKE
LEAK DETECTOR MACHINE

 

^DRIVEABILITY - DIAGNOSTIC TROUBLE CODES
(DTC) P0171, AND/OR P0174 - DETECTING
VACUUM LEAKS - USING THE ROTUNDA VACUTEC
522 SMOKE LEAK DETECTOR MACHINE

 

FORD:
1997-2000 CONTOUR
1997-2001 ESCORT
1997-2002 CROWN VICTORIA, MUSTANG, TAURUS
2000-2002 FOCUS
2002 THUNDERBIRD
1997-1998 F-250 HD, F-250 LD
1997-2002 E SERIES, EXPEDITION, EXPLORER SPORT, EXPLORER, F-150, RANGER, WINDSTAR
1999-2002 SUPER DUTY F SERIES
2000-2002 EXCURSION
2001 ESCAPE
2001-2002 EXPLORER SPORT TRAC

 

LINCOLN:
1997-2002 CONTINENTAL, TOWN CAR
2000-2002 LS
1998-2002 NAVIGATOR
2002 BLACKWOOD

 

MERCURY:
1997 COUGAR, TRACER
1997-2000 MYSTIQUE
1997-2002 GRAND MARQUIS, SABLE
1999-2002 COUGAR
1997-2002 MOUNTAINEER

 

ISSUE
Some vehicles may exhibit vacuum or air leaks in the Intake Manifold and/or Engine System causing DTC's, P0171 (System Too Lean (BANK 1), and/or P0174 (System Too Lean (BANK 11). This article can also be used if you suspect a vacuum leak that has not generated a DTC.

 

ACTION
Use the Rotunda's Vacutec 522 - Smoke Leak Detector Machine to help detect vacuum or air leaks in the engine compartment air intake or vacuum system. Refer to the following Service Procedure for details.

 

SERVICE PROCEDURE

NOTE IGNITION KEY AND ENGINE MUST BE TURNED OFF AT ALL TIMES DURING THIS DIAGNOSTIC PROCEDURE.

 

VEHICLE PREPARATION
Prepare vehicle for a hoist (if necessary).

 

1.Visually inspect the engine Intake Manifold and Engine System for loose, broken or disconnected hoses etc...

 

a.If you find a leak condition, repair by using the appropriate model year PC/ED or Workshop Manual. Verify the fix for this repair by using this Vehicle Preparation and Diagnostic Procedure.

 

b.If you DO NOT locate the Intake Manifold and Engine System leak condition, perform the following steps included in the Vehicle Preparation and Diagnostic Procedure.

 

2.In the topside of the engine compartment, remove any plastic shields that could be covering the Throttle Body or Intake Manifold.

 

3.Remove the Air Cleaner Outlet Tube Assembly (Zip Tube) on the Throttle Body side. Plug the Throttle Body inlet opening with the proper Cap Plug located in the Rotunda Vacutec - 522 kit.

 

a.Plug or tape the ends of the closure hose(s) if equipped (usually attached to the Air Cleaner Outlet Tube Assembly (Zip Tube)) for best results.

 

4.Plug the tail pipe(s) with the tapered rubber cone (218-00003).

 

5.Locate a small manifold vacuum source/port to the Intake Manifold (if equipped). It is recommended to use the vehicle's manifold vacuum source from the Vapor Management Valve (VMV) port.

 

6.Insert the nozzle from the Black Hose which is located on the right side of the Rotunda's Vacutec 522 Unit into the Intake Manifold vacuum source. This Black Hose will release SMOKE only. DO NOT use the clear hose (air Pressure source).

 

7.Power Supply - 12V DC: Attach the Remote Starter Power Cables located on the left side of the Rotunda Vacutec - 522 unit to the subject vehicle battery.

 

NOTE BATTERY NEEDS TO BE IN GOOD WORKING ORDER TO RUN THE SMOKE LEAK DETECTOR MACHINE.

 

8.Hook up the Halogen spotlight (218-00008) cables on the vehicle battery terminals. This is a high intensity light source will help locate the smoke in the engine compartment.

 

DIAGNOSTIC PROCEDURE FOR LOCATING LEAKS WITH THE ROTUNDA'S VACUTEC - 522 SMOKE LEAK DETECTOR MACHINE

NOTE YOU WILL SEE SMOKE DURING THE FOLLOWING DIAGNOSTIC SMOKE MACHINE PROCEDURE FROM THE FOLLOWING COMPONENTS (IF EQUIPPED): EGR VALVE, EVR, IAC SOLENOID (ONLY IF EQUIPPED WITH AN EXTERNAL CAP VENT) AND IMRC. THE SMOKE WILL BE VISIBLE WITH THESE COMPONENTS UNDER PRESSURE (13 INCHES OF WATER (1/2 PSI)).

 

NOTE DO NOT CHANGE ANY OF THESE COMPONENTS UNLESS THEY HAVE GENERATED THEIR SPECIFIC DTC.

 

1.Turn the selector valve to "Smoke" position.

 

2.Verify that the nozzle from the "Black Hose" is inserted in the manifold vacuum hose (Step 6 of Vehicle Prep) to pressurize Intake Manifold and Engine System with smoke only.

 

3.Check the "Power Supply Light" (Green Light ON) located on the Rotunda Vacutec 522 Panel housing when the Vacutec - 522 Remote Starter Power Supply Line (Cables) are secured to the vehicle's battery terminals.

 

4.Pick up the Rotunda's Vacutec - 522 Remote Starter which is located with the Power Supply Line (Battery Cables).

 

NOTE THE REMOTE STARTER RELEASES THE SMOKE INTO THE VACUUM HOSE THROUGH THE BLACK HOSE NOZZLE INTO THE ENGINE.

 

5.Check the "Smoke Indicator Light" (Red Light "ON" will illuminate when the remote starter trigger is pushed) located on the panel of the Rotunda Vacutec - 522 unit.

 

6.Check that the Halogen Spotlight is secured to the vehicle's battery terminals.

 

7.Remove the oil fill cap.

 

8.Push the Rotunda's Vacutec Remote Starter Trigger which will release the Smoke into the Intake Manifold and Engine System until you see smoke coming from the oil fill cap opening (neck).

 

9.Once the smoke is visible from the oil fill cap opening, quickly tighten the oil fill cap to seal up the oil system.

 

a.Push the Remote Starter Trigger until the Intake Manifold and Engine System have reached maximum pressure (13 inches of water (1/2 PSI)).

 

NOTE WHEN THE INTAKE MANIFOLD AND ENGINE SYSTEM HAS REACHED MAXIMUM PRESSURE, YOU MAY SEE SMOKE COMING FROM THE RELIEF VALVE LOCATED ON THE REAR SIDE OF THE ROTUNDA VACUTEC - 522 UNIT. STOP PUSHING THE REMOTE STARTER TRIGGER.

 

10.Start looking for smoke on the topside of the engine compartment. Push the Remote Starter a few more times while you are looking for the smoke.

 

11.It there's no smoke visible on the topside of the engine compartment, secure the vehicle safely on a hoist.

 

12.Push the Rotunda Vacutec remote starter trigger to refill to the maximum pressure of the Intake Manifold and Engine System with smoke again.

 

NOTE WHEN THE INTAKE MANIFOLD AND ENGINE SYSTEM HAS REACHED MAXIMUM PRESSURE, YOU MAY SEE SMOKE COMING FROM THE RELIEF VALVE LOCATED ON THE REAR SIDE OF THE ROTUNDA VACUTEC - 522 UNIT. STOP PUSHING THE REMOTE STARTER BUTTON.

 

13.Check the underside of the engine compartment for smoke.

 

NOTE IF YOU DON'T SEE SMOKE AND ARE UNABLE TO LOCATE THE LEAK, REFER TO THE PC/ED MANUAL OR WORKSHOP MANUAL FOR OTHER DIAGNOSTIC PROCEDURES.

 

NOTE IT IS POSSIBLE TO HAVE A VACUUM OR AIR LEAK INSIDE THE VEHICLE IN THE PASSENGER COMPARTMENT. IF NO EXTERNAL LEAKS ARE FOUND, BE SURE TO VERIFY THAT NO SMOKE IS VISIBLE IN THE INTERIOR OF THE VEHICLE.

 

14.If you see the smoke, repair the leak source after carefully removing Halogen Light and Rotunda's Vacutec - 522 Remote Starter Power supply cables from the vehicle's battery terminals. Note: Follow PC/ED or Workshop Manual procedure for repairing the specific leak.

 

15.When the repair is completed. Clear DTC's if applicable. Repeat Step 1-13 only once to verify that the leak is repaired.

 

16.When the repair is verified and completed (Under Diagnostic Procedure Steps 1-13), perform the following:

 

a.Remove all diagnostic equipment from vehicle: tail pipe cone, car caps, halogen light, remote starter Power Supply Lines (Battery Cables), Black Hose, nozzle and tape used during this procedure.

 

b.Re-install the Intake Manifold vacuum source to the VMV port (it used) or any other Intake Manifold vacuum source as originally equipped.

 

c.Tightened all clamps and re-install all electric connectors and Plastic Shields (if equipped) that were removed during this test procedure.

 

d.Release vehicle
EMRSR, Master Certified Service Manager
Category: Mercury
Satisfied Customers: 3010
Experience: 20 years with Ford
EMRSR and 3 other Mercury Specialists are ready to help you
Customer: replied 4 years ago.

 

I already know this and will be preforming this test. This can't be the first time that this has occurred with this model so I'm asking what has been found to create this situation that puts me on a more direct path to getting this resolved.

Expert:  EMRSR replied 4 years ago.
Are you getting a check engine light or any warning lights ?
Customer: replied 4 years ago.
No their are no check engine lights or warning lights that come on. I have run a codes check just to see if something might come up but nothing.
Expert:  EMRSR replied 4 years ago.

I can not say I have seen any thing in particular, if you use a piece of vacuum hose about 3 feet long one end to your ear and the other used as a probe you might be able to isolate it. Or even use the carburator spray method and try to isloate that way.

 

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Last | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    1601
    ASE Certs and Ford Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    1601
    ASE Certs and Ford Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Mercury Technician

    Satisfied Customers:

    1399
    16 years experience with Mercury
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Mercury Technician

    Satisfied Customers:

    403
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    287
    33 Years experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/scottz136/2008-12-09_220350_js640_p1010013.jpg scottz136's Avatar

    scottz136

    Mercury Technician

    Satisfied Customers:

    260
    senior master lincoln mercury tech.
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    257
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Mercury Tech -

    Satisfied Customers:

    197
    18+yrs experience. State Inspector and Mercury Diagnostics
 
 
 
Chat Now With A Mercury Mechanic
EMRSR
EMRSR
243 Satisfied Customers
20 years with Ford