Do all IS250 have carbon build-up?
If you own a Lexus IS250 or GS300, your engine may have a carbon build-up issue. The Lexus IS250 and GS300 sedans use small V6 engines with very high compression. Due to the nature of their design they are subject to a build-up of carbon inside the parts of the engine surrounding the combustion area.
Why does carbon build up cause a misfire?
The carbon build-up is the reason for the misfire (rough running engine). This signals the check or service engine light to come on, letting the driver know there is an issue with their engine’s performance.
What causes a Lexus IS250 engine to misfire?
This buildup eventually breaks off and is ingested into the engine causing the intake and exhaust valve to hang open (causing a partial misfire) or damage to pistons, rings and cylinder walls. IS250 and GS300 direct injection engines benefit heavily from regular induction services to help dissolve these intake valve deposits.
Why does the Lexus IS250 have carbon build up?
Here is what to do and why you should not worry. The Lexus IS250 and GS300 sedans use small V6 engines with very high compression. Due to the nature of their design they are subject to a build-up of carbon inside the parts of the engine surrounding the combustion area.
Why does direct injection cause a misfire engine?
These engines are the most efficient at low mileage. As the miles are put on the vehicle, fuel directly injected into the cylinder causes a carbon build-up. The direct injection does not allow for the fuel and its detergent additives to clean the valve and the port. The carbon build-up is the reason for the misfire (rough running engine).
This buildup eventually breaks off and is ingested into the engine causing the intake and exhaust valve to hang open (causing a partial misfire) or damage to pistons, rings and cylinder walls. IS250 and GS300 direct injection engines benefit heavily from regular induction services to help dissolve these intake valve deposits.
Here is what to do and why you should not worry. The Lexus IS250 and GS300 sedans use small V6 engines with very high compression. Due to the nature of their design they are subject to a build-up of carbon inside the parts of the engine surrounding the combustion area.
What causes a car to misfire after 50, 000 miles?
After 50,000 miles or so, OEM carbon-core ignition wires develop too much internal resistance, which weakens the spark and increases the risk of misfire. High-mileage plug wires also can develop cracks that leak current to ground or to other wires, shorting the spark before it can reach the plug.
Why does carbon build up in an internal combustion engine?
The internal combustion engine is a perfect place; for the formation of carbon deposits on: So, carbon buildup in engines can cause all kinds of problems. In both port injected and direct injection engines. If the carbon buildup is in the combustion chamber; it disrupts normal airflow causing turbulence.