What causes high fuel pressure?

Causes of High Fuel Pressure As we discussed, high fuel pressure means that the air to fuel ratio is off-kilter. The causes for this imbalance of fuel pressure typically include either a bad fuel regulator or a clogged return line.

What does too much fuel pressure mean?

High fuel pressure results in a rich air-fuel ratio because the increase in pressure forces more fuel through the injectors than required. It also causes black exhaust and high emissions (HC’s). These excessive hydrocarbons overheat and damage the catalytic converter. Use a fuel pressure gauge to test fuel pressure.

Can a bad fuel pressure regulator cause high fuel pressure?

A faulty fuel pressure regulator may result in fuel pressure that is too high and a rich running condition. Alternatively, a bad fuel pressure regulator can also result in fuel pressure that is too low, causing a lean condition.

Why is my Vauxhall Vivaro having fuel problems?

2004 1.9 vivaro, fuel problems… 2004 1.9 vivaro, fuel problems, non starter. can anyone tell me if an electrical fault can stop the fuel exiting the outlet of the injection pump even though the fuel is getting to the injection pump? basically the fuel is getting to the pump and returning and theres nothing even seeping from the pump outlet

Is the in tank pump on a Vivaro?

Hello, Iv recently purchased a non runner vivaro. The local *********** diagnosed it as a bad in tank pump. Customer said to scrap the vehicle so i purchased it. The van does NOT have an in tank pump, Ive checked and will highlight what i have done so far. First thing i done was put a fuel filter on it and checked for any swarf, All clear.

What kind of fuel pressure does Trafic Vivaro have?

Iv checked that the Solonoid on the pump has 12v when ignition is on and is buzzing away like it should. have you checked the pressure sensor/cables on the injection rail/high pressure pipework?

What is a solenoid valve in a Vauxhall Vivaro?

A solenoid valve is a valve that is controlled electrically, so it closes or opens a certain circuit (hydraulic circuit) when given power supply (electrical) or not. You need to check the fuel metering, and the pump mechanical connection to engine.