Q: Bluish white smoke during smog, did not pass. Does stop smoke fix the problem?

asked by on August 09, 2017

Bluish white smoke coming out of muffler. Failed smog Smoke snap test, will stop smoke fixed it so it will pass smog

My car has 225000 miles.
My car has an automatic transmission.

Hi there. In most cases, bluish white smoke is caused by damaged piston rings, or damaged cylinder head valve guides and is referred to as oil blow back. I am not a believer in "stop smoke" products, as they typically create more internal engine problems than good. If the vehicle didn’t pass smog inspection, it’s probably not going to by adding the stop smoke product.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $65/hr

What others are asking

Transmission going out

Hi there. This usually points towards an internal problem. Your transmission is made up of multiple gears and solenoids inside. If one of these components is malfunctioning your transmission will shift very rough. I'd strongly suggest taking your vehicle to...

I have to have my foot on the gas to start my car.

There are a lot of reasons a computer controlled car won't stay running unless you have your foot on the gas. Anything from low oil pressure to a weak fuel pump could be the cause. Your particular vehicle, however, is...

Sugar in my gas tank

Hello. The fuel tank must be drained, removed from the vehicle, rinsed out, and dried to try to remove as much sugar as possible from the tank. The fuel pump and fuel filter should be replaced, and the line between...

Sputtering and other things - 2004 Ford Taurus

Hi there. Typically the issue you're describing is ignition or fuel delivery related. It could be as simple as a crankshaft sensor that is faulty or as complex as a fuel / air mixture issue caused by a faulty mass...

I think my starter needs replacing.

Hello, a common mistake that people make is thinking the battery may be good because the lights come on. A bad battery may allow power for the lights but not enough power to start the vehicle. The only way to...

Random whirring noise while moving

What you are describing sounds like a wheel bearing that may be starting to fail. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface...

Check engine light is on and keep jerking and cutting off and want crank

There a couple of things that will typically cause the jerking reaction you are describing, both of which will also cause the check engine light to come on as well. The camshaft position sensor measures the rotational position of the...

How do i remove a stripped bolt from a battery post clamp?

Hello. From what you describe it would appear that your battery terminal will likely need to be replaced. If you do not have the resources to have it professionally replaced then replacing it on your own could be another option....

Dash and headlights flash for about 1 minute after shut off

Hi there. It sounds like the lighting system has feedback through another circuit. This could be due to a short circuit, open circuit, missing/failed ground point, corroded ground point, corroded connector, loose connector, or relay block faults. With the age...

Related articles

A Buyer’s Guide to the 2012 Mitsubishi Eclipse Spyder
In In 2012 Mitsubishi says sayonara to the 22-year run of the sporty little Eclipse, and with it, the Spyder convertible. This sleek, stylish soft-top has enjoyed many years of popularity as a fairly affordable option for those with a...
A Buyer’s Guide to the 2011 Mitsubishi Endeavor
The The 2011 Mitsubishi Endeavor is a crossover SUV that manages to provide decent comfort, power and performance into a single package. This also marked the final year of production for the SUV, as it was phased out due to...
Mitsubishi Certified Pre-Owned (CPO) Car Program
If If you have been shopping for a used Mitsubishi vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on...