Question about 1998 Toyota Avalon

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TOYOTA AVALON CHECK LIGHT ON

Black smoke comes out from the exchaust and its consume fuel

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What is the p code from computer?

Posted on May 20, 2009

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3 Answers

My toyota sienna 2000 is consuming too much fuel


Could be one or more injectors stuck open. Pull sparkplugs, one will look different, that's the one to check injector.

Jun 01, 2015 | 2000 Toyota Sienna

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2006 toyota avalon blowing white smoke in the morning


This sounds like coolant is leaking into the combustion chamber so when it is cool remove the radiator cap and see if the coolant level is low which will indicate that the engine is consuming coolant. Pressure testing the cooling system would be the next test to check for such a lek.

Sep 19, 2014 | Toyota Avalon Cars & Trucks

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Engine not revving out at times


black smoke is excess fuel entering the cylinders. and does not burn completely. poor fuel milage is also a complaint of black smoke from tailpipe.check your O2 sensor, your MAF sensor and for vacuum leaks. Could be air intake check your air filter, but probably the O2 sensor.The O2 sensor. located on the exhaust pipe prior to the muffler, looks like a spark plug with a wire that comes off the tip and leads into the wire loom.But the 02 sensor will turn the check engine light on.other intake components like sensors, fuel injectors and the fuel-pressure regulator.should be checked. good-day!

Apr 06, 2014 | 2007 Toyota 4Runner

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Check engine light gas smell


The reason can be faulty fuel supply system. There might be any damaged fuel supply line which may be leaking the fuel. Check for the damaged pipe and repair or replace the pipe. It is not necessary that engine is burning gas fast, leak in fuel supply line may also result in more gas consuming vehicle.

Jul 10, 2013 | Kia Sportage Cars & Trucks

1 Answer

Black smoke from 2000 Avalon


I can change my oil every 3 decades and it'll be at regular intervals. What are your intervals? 3000 miles? 84 million Mississippi? One lap around Daytona Raceway?

Where do you see the black smoke and carbon coming from?

A mechanic that "forgot" to change the oil filter is not only a poor mechanic, but he/she is ripping you off. You need an oil filter with each oil change more than you need new oil. If I poured clean water through a dirty Brita filter, would you drink it?

There is no way to tell you exactly what's wrong over the internet (besides your mechanic). But, assuming the smoke and carbon you mentioned is coming from...

the HOOD: You either have an oil leak, or just a bunch of oil sitting on your engine burning off. Check oil with dipstick (something you should be doing at least once a week in a NEW car, let alone a 10year old model.) The leak could be poor workmanship by your mechanic, or something entirely different, too.

the EXHAUST PIPE: You may have blown your piston rings or have a stuck/bent valve.

Toyotas are somewhat known for running well beyond when they should. I blew out rings in my '93 pickup and drove it daily for 3 more months before it actually quit. I'm still not convinced it's dead.

Oct 19, 2012 | 2001 Toyota Avalon

1 Answer

I recently bought a 2001 avalon with 139k runs and drives great but check engine light came on, we did oil change and did not go out but also have noticed white smoke coming from tailpipe when cranked for...


First, the check engine light is telling you there is a problem with the emissions or performance of the engine. You need to have someone scan the computer for trouble codes.
The smoke in the morning could be a leaking head gasket - something is leaking into the cylinders and being burned.

Aug 28, 2012 | 2001 Toyota Avalon

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By changing gears I've got smoke coming from my exchaust: what can I do to prevent it. What Oil is best for my TDI. Can I use fuel injector oil with the diesel.


Identifing the smoke color tells you where it is coming from. Black smoke comes from fuel, so it is running rich or not fully igniting the mixture. White smoke comes from oil and often happens under very heavy engine load. On acceleration this could be the piston rings allowing blow-by, on deceleration this could be the valve seals leaking. Blueish smoke is often coolant, indicating a head gasket leak.

You didn't state iof this happens during a moving gear change, or if it has happened since you physically changed some of the gears in the car. On a TDi, I would follow the factory recommendations for all engine lubricants and additives.

Nov 01, 2010 | 2003 Volkswagen Jetta TDI

1 Answer

Car exhaust is smoking when i accelerate and check engine light is on. I just changed the plugs, valve covers, oil, fuel filter. any solutions?


did you check the catalic converter? this is a switch on the exchaust. this is why the light on the dash is on

Jun 05, 2009 | 2002 Lincoln LS

1 Answer

Check light on black smoke,fuel consumption,the scan read PO 171 please what is the problem.


Sounds like a faulty oxygen sensor, telling computer that engine is running lean, so it's dumping more & more fuel to try & correct it. Bank 1 oxygen sensor.

Jun 04, 2009 | 1998 Toyota Avalon

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