Question about 2001 Suzuki Grand Vitara

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My engine will not start and black smog comes out of the exhaust and after a while the engine will start up and u would have to hold down the accelerator for it to continue to run

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The catilaic converter is clogged.

Posted on May 26, 2010


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1995 mitsubishi 3000 vr4 maf sensor is not picking up any signal from the maf sensor and is a lot black smog coming up from the exhaust

Test the MAF, check the harness wiring. The black exhaust is likely because the car is running rich, due to the fact it's running on pre-programmed fuel tables since there is no signal from the MAF. The pre-programmed fuel tables are a failsafe for this reason (MAF failure); they intentionally make the car run rich to protect the engine from detonation.

Feb 18, 2016 | Mitsubishi Cars & Trucks

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Why can't I pass smog check engine light won't come on

The smog check requires a visual inspection of your check engine light. It has to come on for a bulb check at startup to make sure it's working. But, the light must go out after starting the engine(it cannot stay on after the engine starts during a smog check). If the check engine light fails either of these two tests, the vehicle will fail the smog check inspection.
You need to have the cause of your inoperative check engine light diagnosed and repaired.

May 31, 2014 | 2004 Chevrolet Blazer

1 Answer

1992 GMC Sierra that has failed smog test twice. The motor is not burning gas, the gas is going straight through.

Has your check engine light come on? If so, have the code read and deciphered. When you say "the gas is going straight through", do you mean that there is raw fuel coming out the exhaust pipe? If no codes are present, you should start with a tuneup - plugs, wires, distributor cap, rotor, points or inductive pickup, fuel and air filters. If the fuel isn't being burned, you have some kind of ignition failure, AND raw gas in the exhaust will fail the hydrocarbon test in a heartbeat. Original exhaust system? Including catalytic converter(s)? If so, converters are probably trashed by now. Good luck.

Sep 30, 2013 | GMC Sierra Cars & Trucks

3 Answers

The check engine light keeps turning on after I have the oxygen sensor replaced. I've had the sensor replaced 3 times as the light keeps turning on and the shop keeps telling me that that's the only thing...

are they replacing the correct sensor? try bringing it to a vw specific shop that is not a dealer! make sure the air filter is not clogged. without doing a full scan in vag-com it would be very hard to diagnose the problem

Jan 17, 2011 | 2004 Volkswagen Jetta

1 Answer

The engine 4.6 gets alot of smog,I think,the problem maybe wil be the regulator presure of fuel pump. Because was liquing gasoline throw the mofles . Do you agree? It ocurres about one minute after I...

If the smoke is white, it is caused from burning oil. It it was gas it would be black. If the smoke is coming from the exhaust pipe then the oil is leaking into the combustion chamber of the engine. If it is coming from under the hood then there is an external leak that is getting on the exhaust system and burning off.

Dec 26, 2010 | 1994 Cadillac DeVille

2 Answers

How do i find where an exhust leak is coming

check where the headers come off of the engine exhaust leaks are generally quite loud and you will either be at the headers/exhaust manifold or just as you come off that bend there will be a flange gasket inside the two pipes joining. from the bend to the straight pipe just as it passes the gearbox and starts to straighten out.

Jun 22, 2010 | 1996 Chevrolet S-10 Pickup

2 Answers

Hard to start and when it does a lot of black smog came out of the exhaust. Already change the map sensor.

check your fuel injectors for them sticking open. will the engine idle and if so how well? this should be a vortec motor which has spider injection. big pain. let me know.

Dec 28, 2009 | 1998 GMC Jimmy

2 Answers

2000 Pontiac Grand am 3.4L

smog pump or secondary injection pump works on cold starting to inject clean air into the exhaust pipe to help catalytic convertor to burn extra unburned fuel in exhaust gases and improve clean exhaust emissions then shuts off when catalyst reaches the right temp. so i guess your air pump is fine.

Oct 19, 2008 | 2000 Pontiac Grand Am GT

1 Answer

Idle up and down

see if also black smog is coming from exaust, if it is , most lijkelly your injector assembly is bad, but if not black smog try to locate a vacium leak, vacium leak is identified as air noise on engine while engine runing like hiseling noise.

Jun 28, 2008 | 1995 Chevrolet Astro

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