Question about 2006 Chevrolet Trailblazer

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Engine missing and smoking 2006 chevy trailblazer.

Can a clogged fuel injector cause internal engine problems.

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  • preacherotis Oct 24, 2008

    THE SMOKE IS BLUISH GRAY. THE CHECK ENGINE LIGHT BLINKS AT SPEEDS OF 15 & TWENTY MILES AN HOUR. THE ENGINE IS A V-8 W/59000 MILES. THE VEHICLE HAD SAT FOR 2 DAYS IN THE GARAGE BEFORE THE PROBLEM WAS NOTED. I TRIED ADDING FUEL INJECTOR CLEANING FLUID TO THE GAS TANK BUT NO RESULTS.

  • preacherotis Nov 07, 2008

    After taking the vehicle to the mechanic(GM CERTIFIED). I was told that the no. 7 engine cylinder sleeve was damaged possibly due to so hard running maybe even racing. I was told that the engine would have to be replaced or rebuilt. can you please comment on this situation?

  • fixyaixya
    fixyaixya May 11, 2010

    what color is the smoke? if it has a bluish hue thats not good.

  • Anonymous Mar 13, 2014

    fuel leaks from engine when key turned on in 2005 chevy trailblazer

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A clogged fuel injector will cause a miss but no engine damage,

Posted on Nov 07, 2008

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I have a 2003 trailblazer with 4.2 engine. Losing power when driving especially when going up hill (even small hill). Will drop down to 15 mph. got a code of p0172. Replaced O2 sensor and the...


Yes , it is more then likely the Catalytic converter is clogged ! Pull the O2 sensor before the Cat an do a back pressure test ! Testing for plugged clogged restricted exhaust converter An your P0172 means you have a rich condition , does not mean O2 sensor is bad ! Do you have 4.3 L vortex ? Could be bad fuel pressure regulator leaking ! caused your cat to have a melt down an starting to plug ! 4.3L or 5.0L vortex engines . with spider injectors ! chevy vortec p0172 p0175 So you have two problems ! Hope this helps !

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1 Answer

Black smoke from exhaust


Black smoke is an indication of too much fuel-running rich-in the cylinders. The air/fuel mixture is way off-too much fuel. Possible causes are cylinder misfires (runs and idles rough, a noticeable miss), leaking fuel injectors, or a failed fuel pressure regulator.
Take off the vacuum line to the regulator (on the fuel rail?)-if there is evidence of gas in the vacuum line, the regulator has failed and excess gas is being sucked into the engine through the vacuum line.

You should take a fuel pressure reading to check pressure against the specification for your car.
Also possible that the fuel metering is correct, but the air being supplied to the cylinders is lacking. A clogged air filter could cause that, but you would also experience a rough running condition. Since you didn't mention that, I would think the fuel metering is wrong-too much gas.

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Engine misses and sputters at starteup


Hello if the engine only misses on start ups and goes away after running, then the most probable cause is a leaking fuel injector. try having the fuel injectors cleaned first. sometimes a high pressure cleaning will correct this problem

Jul 08, 2011 | 2006 Chevrolet Silverado

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Its like its missing,no power.maybe one cyl not working prop


MANY THINGS WILL CAUSE MISSING AND NO POWER LIKE FAULTY TPS SENSOR. SOUND LIKE STOPPED UP FUEL FILTER, CLOGGED FUEL INJECTORS, CLEAN FUEL INJECTORS IF YOU HAVE ELECTRONIC FUEL INJECTIONS.OMIT IF YOU HAVE 2 BARREL CARBURETOR. DO A LITTLE TUNE UP.REPLACE DISTRIBUTOR CAP AND ROTOR. REPLACE SPARK PLUGS AND WIRES. A BAD IGNITION COIL WILL CAUSE ENGINE TO MISS.DO A COMPRESSION TEST CHECK FOR WORN CYLINDERS WILL CAUSE ENGINE MISS.

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I had a mechanic check my car and he said it might be the #5 injector that was missing (1998 chevy blazer)


The 98 chevy blazer has a one spider injector that runs to six poppit valves where the fuel is injected into the cylinders.It is possible that the poppit valve may become plugged. Before looking into this more I would verify that the spark plug or wire is not the cause of your cylinder #5 misfire.

May 18, 2010 | Cars & Trucks

1 Answer

My trailblazer runs fine on highway but when i stop it misses and sputters


BAD SPARK PLUGS AND WIRES OR DIRTY CLOGGED FUEL INJECTORS.OR VACUUM LEAK AT INTAKE MANIFOLD OR LEAKING VACUUM HOSES.THESE ARE POSSIBLE CAUSES.

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1 Answer

2002 Chevy Trailblazer running rough when idling, especially when its cold. The engine sounds like it is missing. Thought it was because I got some bad gas but still having the problem.I have replaced the...


clogged injectors I bet with the dirty fuel you claimed you had in the tank. Cleaners will not remove all contaminates in injectors for they tend to get seized inside of them

Feb 06, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Chevy 3500 Express truck. fuel problem?


IF YOU GOT CYLINDER MISFIRE.OR OPEN FUEL INJECTOR.THAT WILL CAUSE THE PCM TO ENRICHEN FUEL MIXTURE.TO ADJUST TO DEAD CYLINDER.WHICH ACT AS A LARGE VACUUM LEAK.THATS WHY YOUR EXHAUST TAIL PIPES HAS A RAW FUEL SMELL AND WHITE SMOKES.

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I have black smoke coming from my exhaust


you need to put an injecter cleaner in the fuel to clean the fuel system and injecters out

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