Question about GMC Yukon XL

2 Answers

Mot failure emmisions

My car is emmiting blue smoke from exhaust and failed mot on emmisions does anyone know the likely cause?Failed on carbon monoxide content at idle excessive,2nd fast idle excessive,hydrocarbon content after 2nd fast idle excessive and exhaust emissions lambda reading after 2nd fast idle outside specified limits.Also needs cambelt and tensioner replacement is this expensive?

Posted by on

  • 1 more comment 
  • robinkerr May 15, 2009

    its already had a full service just before the mot failure and they told me there is some kind of engine failure but without looking they dont know i was hoping for possibles and whether or not its worth doing or should i scrap the car,thanks for rapid response

  • robinkerr May 16, 2009

    how many hours labour involved in taking engine out and putting another in??

  • Anonymous Mar 13, 2014

    54 plate 2.4tddi transit failed mot on excessive metred smoke

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 232 Answers

Internal oil leak, change the spark plugs and cables, oil, filter and add Lucas oil. Take the car for inspection and let me know how it goes. For the belt depends where you get the parts and who does the work.

Posted on May 15, 2009

  • Teddi B May 16, 2009

    Its a days work, and half ot the other inspecting, tuning ect.

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 56 Answers

Anytime you see blue smoke its more then likely oil burinig you might have a leak somewhere that is being burned and the ejected through the exhaust manifold i cant really help you with the rest but like i said blue smoke means burning oil....hope this helped

Posted on May 15, 2009

  • Chris Rodriguez May 15, 2009

    is the service engine soon light on because if it is finding the engine failure would be much easier using a ob3 connector will give you the problem in seconds if its not then the best bet is to take it to a shop and have them take a look at it.....wish i could be of more help

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

What could cause blue smoke from exhaust?


blue smoke is burning oil
I gather that you let the engine idle and when you give it rpms that there is a cloud of blue smoke
if that is the case it indicates that the valve stem seals are hard /failed and when the engine is at idle ( 15" mercury vacuum in manifold) the oil around the valves is sucked past the stem seals and into the combustion chamber
AS you have restricted use of the machine (every 3 weeks ) it is not a great problem as when you are on the road it is not happening (Only at idle )
It is repairable without removing the head if you find an accredited service shop that has experience in the procedure.

Jul 06, 2015 | 1989 Mercedes-Benz 300-Class

1 Answer

What is the cause of water dripping out exhaust pipe and engine smoking excessively?


Cold weather right? Dripping is the water condensing from the exhaust gases. The "smoke" is more than likely water vapor, just like your breath in cold weather. If you have smoke (black) in warmer weather, you have an excess fuel problem and won't pass emmision tests. If blue smoke you have oil leaks into the coubustion chamber. Also will not pass emmisions test.

Mar 04, 2015 | 2003 Ford Explorer

1 Answer

FORD WINDSTAR 1996 FAILED AIR CARE IN HC EMISSIONS AND NOx EMMISIONS


before you go buying a cat converter, check these Misfire condition
Malfunctioning or improperly adjusted EGR valve
Failed oxygen sensor
Leak in exhaust tubing upstream of converter
Excessive carbon deposits in combustion chamber
Improper spark advance
Blocked coolant passage
Overly lean air-fuel mixture
Damaged cold air duct
Failed or malfunctioning catalytic converter
Corroded or damaged engine sensor electrical connections
these items lead to a catalytic converter going bad, and will also make the test fail

Jul 19, 2011 | Ford Windstar Cars & Trucks

1 Answer

After leaving my 2001 VW Beetle idle then revving it emmits blue smoke and has failed the MOT. The oil and filter has recently been changed.


what viscosity oil did you use???
blue smoke indicates oil burn,and if valve guides, would smoke on deceleration and if rings or block breather, would smoke on acceleration,first try block breather,wash out in petrol,then refit.the mot inspector will give you NO info on why......just charge you a fortune for doing something that may not need doing!!!
invest in a workshop manual and save yourself a fortune...

Sep 02, 2010 | Volkswagen Beetle Cars & Trucks

1 Answer

Failed mot on emissions slightly too high have changed the sparke plugs and air filter and added red x to the fuel now seems worse exhaust now smoking when at idle clears when driving is this the red x if...


It will smoke because of the red x, dontr know how long it will take to clear. But before going for an mot, you should take the car on the motorway or such like and give it a good blast/clean out. Town and short trip driving is not good for the car, it can clogg up the exhaust, and also if you take the car for test and the engine is relatively cold then the emmissions will be bad, As i said, give a good blast down the road to clear it out, That should work.

Feb 04, 2010 | 2002 Saab 9-5

1 Answer

Ford Mondeo failed its MOT exhaust emisson test


The advice that the garage gave you seems right. If any bushes were worn they would show up on the MOT Test. Try taking it to another garage to check out the Cat for your peace of mind.

Nov 21, 2008 | 2000 Ford Escort

1 Answer

Audi A4 coil pack


There are 4 coils, one for each cylinder. Audi tend to replace one at a time to save costs. So yes this is probably quite likely.

Oct 04, 2008 | 2002 Audi A4

2 Answers

1996 honda civic emssions failure


If you failed you should know if it is HC, NOx, or CO. Posting that will make it much easier to diagnose.

Jun 14, 2008 | 1996 Honda Civic

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

522 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22133 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...