Why is my exhaust running rich?
When a car is running rich, it means the engine is receiving too much fuel and too little air. If it’s dirty and clogged with debris, air won’t be able to pass through the filter, thereby preventing it from reaching the engine. Fuel injectors stuck in the open position can also cause an engine to run rich.
What could cause a rich fuel air mixture?
A faulty oxygen sensor sending the wrong signal to the engine control module can result in a rich fuel condition. Symptoms include black-colored exhaust, fouled spark plugs, and poor engine performance. Thermostat.
What’s the problem with my 1993 Volvo 850?
Just the little annoying things that can drive you nuts trying to resolve if you don’t know the cause and where to begin fixing it. Beginning with the 1993 850 Volvo began using an upper engine mount (also called the upper engine stabilizer) that helped to control engine movement especially during acceleration.
What causes an oil leak in a Volvo?
Since the mid 70’s Volvo owners have had problems with this system clogging up with oil deposits. Once the system plugs up, crankcase pressure builds high enough to cause oil to be forced past engine seals resulting in oil leaks around the engine.
What kind of engine does a Volvo have?
Help, Advice and DIY Tutorials on Volvo’s extremely popular car line — Volvo’s 1990s “bread and butter” cars — powered by the ubiquitous and durable Volvo inline 5-cylinder engine. I have adapted this from my original howto for the BMW M30 engines.
What are the most common problems with 1993-2000 Volvos?
All 1993-2000 850, S70, C70 and V70 models (as well as most 2001 2007 S60, S80, V70 and XC 90 models) use a complicated crankcase vent system to prevent the build u of pressure inside the engine. Since the mid 70’s Volvo owners have had problems with this system clogging up with oil deposits.