Q: My Toyota 5L smokes black when gooing uphill and loses efficiency. What could be the problem?

asked by on

my toyota 5 litre diesel smocks black on going up hills and reduces efficience. this normaly happence together with delayed gear changes being an automatic vehicle, the rave counter will go up to 4 instead of normally 3. however on straight roads it normally changes on 3 but when going on up hill i have to rave up to 4. when it changes to the next gear the smoke stop. i have recently changed the air filter after the warning sign had appeared but the sign could not go off. a mechanic has advise me that i have to disconect the battery for a while for the air filter warning sign go off. what could be the problem for the above.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My Toyota 5L smokes black when gooing uphill and loses efficiency. What could be the problem?

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

Get a quote

What others are asking

Q: Q: Car is not starting

Hi. In a no start situation, there are always a few items that would need to be looked at. The first thing that is generally done is to read out any trouble codes in the engine computer. If codes are...

Q: Is 182K miles on 08 Jeep Commander with hemi a problem to worry? (a lot of highway-30K/year for 5 years.)

Hi there. The hemi engines are designed to run for about 300K miles before needing any rebuilding. If the engine is running strong and has no problems, then I would not worry about the engine. I would, however, check the...

Q: Why won't the starter motor engage and turn engine over. Also, the clutch pedal won't move and the clutch is partly engaged but slips.

If the clutch pedal is not moving and the clutch is partially applied, then the clutch release bearing may be damaged and the fork is jammed into the clutch forcing it to slip. For the no start condition on...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...