Engine Diagnostics | Auto Repair | Car Repair Shops

This video shows part of a two-day job replacing a heater core for this Chevrolet. The entire dash has to be removed and disassembled just to get access to this leaking heater core which has to replaced. The vehicle was brought in for overheating due…

Failed Air Filter Causes Mass Airflow Problems

May 10, 2018

Auto Repair, Engine Diagnostics, engine performance, Forest VA, Lynchburg VA

This video of a Chevy Silverado shows the inside of the air filter box clogged with debris from a failed aftermarket, high-performance, reusable air filter. This dirty air filter began disintegrating inside the air filter box and caused problems with the mass airflow sensor, causing…

Catastrophic Turbo Failure

April 9, 2018

Auto Repair, Engine Diagnostics, oil change maintenance

This video shows a broken turbo propeller from a Subaru. The vehicle came in for heavy oil consumption and loss of power. Turned out the propeller had broken completely off and lodged in the exhaust pipe/port. A new turbo assembly restored all performance. Most likely,…

Diesel Fuel in a Gasoline Motor

March 29, 2018

Auto Repair, diesel, Engine Diagnostics, exhaust emissions, Forest VA, fuel contamination, Lynchburg

What happens to your car if you accidentally put diesel fuel in a gasoline motor? The diesel gas can cause catastrophic failure to the fuel injection system (fuel pump, fuel pump module, fuel pressure regulators and fuel injectors) and to the various catalytic converters (different…

Thorough Cleaning Finds Multiple Leaks on a Chevrolet Corvette

March 20, 2018

Auto Repair, Engine Diagnostics, Forest VA, Lynchburg, power steering

This video shows multiple power steering leaks on a 1980 Chevy Corvette Stingray. The customer brought the car in for a power steering leak, which primarily seemed to be coming from the pump area. However, after thoroughly cleaning the undercarriage and waiting for everything to…

Misfire Caused by Bad Spark Plug

March 11, 2018

Auto Repair, Engine Diagnostics, Forest VA, Lynchburg, Tune Up

This video shows the carbon tracking on a bad spark plug found in a Subaru Forester that came in for a poor running condition / engine miss. Carbon tracking occurs when the ignition spark travels around the outside of the plug instead of jumping the…

Block Test for Blown Head Gasket

February 20, 2018

Auto Repair, block test, blown head gasket, Engine Diagnostics, Forest VA, Lynchburg

This video shows us performing a block test for compression gases. Carbon monoxide present in cooling system proving cylinder head gasket failure or possibly a crack in the cylinder head itself. Video provided by Forest Automotive: Complete Auto Service and Repair in Lynchburg, VA and…

Strange Debris Lodged in IAC Motor!

February 13, 2018

Auto Repair, Engine Diagnostics, Forest VA, Idle Problems, Lynchburg

Video of debris caught in IAC motor. A Toyota Tundra came in with a very high idle, around two thousand RPM. Normal is around 700 RPM. The idle seemed to be stuck at this high RPM. After checking for vacuum leaks, none were found, but…

Running Problems Related to Fuel Contamination

February 5, 2018

Auto Repair, Engine Diagnostics, Forest VA, Lynchburg

This fuel sample was taken from a VW Jetta that was brought in for a poor running condition. Diagnostics determined the probable cause was fuel contamination, seen in this sample collected. The fuel filter was stopped up from the contaminants you see, causing random engine…

Textbook example of a blown head gasket

January 22, 2018