personally it sounds like the oxygen sensor had its day
Knocking noise in the engine may be as a result of excessive backlash, misaligned gears and worn timing chain. Blowing of excessive oil pressure could be as a result of stuck regulator.
Yes, a disconnected vacuum hose on a pressure regulator will generally lead to an increase in fuel pressure. The vacuum hose helps regulate fuel pressure based on the engine's load and demand; when it's disconnected, the regulator may not receive the necessary vacuum signal, causing it to maintain a higher pressure. This can result in poor engine performance, increased fuel consumption, and potential damage to the engine or fuel system components.
The fuel pressure regulator maintains a constant predetermined fuel pressure regardless of engine RPMs.
The 2001 Kia fuel pressure regulator can be found on the top of the engine. The fuel pressure regulator will be near the back of the engine.
To determine if your fuel pressure regulator is bad, check for symptoms such as hard starting, poor fuel economy, or engine misfires. You can also inspect for fuel leaks around the regulator or a strong smell of fuel. Using a fuel pressure gauge, measure the pressure; it should match the manufacturer’s specifications. If the pressure is too high or too low, or if you notice excessive fluctuations, the regulator may be faulty.
It controls the fuel pressure supplied to the engine.
The fuel pressure regulator is located on the fuel rail of the engine. The regulator is placed at end of the fuel rail.
The fuel pressure regulator, on a 2001 Kia Rio, is located near the fuel injector pump. The pressure regulator can be found on the top of the engine.
The Fuel Pressure Regulator is located on the fuel rail. The fuel rail located next to the engine valve cover. The fuel pressure regulator line needs to be de-pressurized prior to replacing the regulator. This may be accomplished by removing the fuse for the fuel pump while the engine is running. The engine will stop once fuel pressure is lowered.
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Where is the fuel pressure regulator located on a 1989 chevy silvarado with 5.7 liter engine
If you Google "Symptoms of a faulty fuel regulator" you will get quite a few hits. If the regulator is bad it may cause either a drop in fuel pressure or an increase in fuel pressure at the rail . A drop in fuel pressure, if severe enough, can cause bad or no idle condition, engine starving for fuel and etc. If the regulator is causing excessive pressure it can cause fouled plugs, black smoke from exhaust and rough engine performance. Before you change the regulator check for cracked, rotted or disconnected vacuum hose. Also you can connect a fuel pressure gauge to the schrader valve on the rail and monitor the pressure to see if it is in specifications, or to see if the fuel pressure drops rapidly after engine shutdown. Hope this helps and good luck with your problem. Dan