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Can a faulty fuel pressure regulator cause a check engine light to come on?
Yes.
Can a bad fuel regulator make your engine run rough?
yes a fluctuation in pressure could cause it. check pressure with a guage
What are symptoms of a damaged Fuel Pressure Regulator in a Blazer 98 4.3L V6 Vortec?
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
95 buick lasabre idles up and down what cause this to happen Check engine light is also on.?
check all vacuum hoses,a leak will cause erratic idling.also could be the throttle position sensor.plug a scan tool into the car,there should be a code,as to why the check engine lite is on.after driving the car, pull off the vacuum line on your fuel pressure regulator and if there is gas that comes out the vacuum hose , your problem is a bad fuel pressure regulator!!! :)
What problem would you have if your 1992 Chevrolet Cheyenne 1500 is not getting enough gas to keep it idling?
Need to check fuel pressure with a gauge first. Then check fuel pressure regulator. Need to check fuel pressure with a gauge first. Then check fuel pressure regulator. Need to check fuel pressure with a gauge first. Then check fuel pressure regulator. Need to check fuel pressure with a gauge first. Then check fuel pressure regulator.
How do you check the injector pressure regulator on a 2000 silverado 5.3 liter?
If you look at it you will see a vacuum line hooked to it, while the engine is running unplug it and the engine sound should change. If it don't then the regulator is bad. You can also hook up a fuel pressure gauge to the fuel line and read what the pressure is while engine is idleing and then unplug the regulator and the fuel pressure should go up a few LBS. If not replace regulator.
How do you check if a 92 accord fuel pressure regulator is bad?
Symptoms of a Bad Fuel Pressure Regulator Check related link below
Will low oil cause your check engine light to come on?
Oil level or pressure will not trip a check engine light.
Will bad oil pressure switch cause check engine light to come on?
No it will not.
What would cause fuel pressure drop overnight on 2003 Chevy s10 4.3L MFI?
Could be a faulty check valve in the fuel pump, a leaky fuel injector poppet or a leaky fuel pressure regulator. My guess would be the fuel pressure regulator.
Backfire from the engine of 1989 Ford Taurus 30 engine not the show?
If you are getting this condition without setting any fault codes, I would first check the EGR valve for leak by when no vacuum is applied. Air leaks in the hose between the mass airflow sensor and the throttle body could also be a cause. Check for a stopped up fuel filter. Ensure fuel pressure is at 45-50 psi without vacuum line connected to fuel pressure regulator, and 30-35 psi with the line connected. If it is not, the fuel pressure regulator may be the culprit. If the engine has many miles, a badly worn cam can cause backfire as well. This condition should set faults and render a check engine situation however.
How do you install a new fuel pressure regulator for a 88 ford bronco 302?
Remove the fuel pump and relieve the fuel system pressure. Disconnect the fuel line then fix the fuel pressure gauge. Reconnect the fuse to the fuel pump and start the engine to check leakage. Tidy the surrounding of the fuel pressure regulator.
