Bad Fuel Pressure Regulator No Start
It will not pump any more unless you repeat the step. Another common symptom is fuel leakage which not only causes performance problems but also leads to a bad smell.
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Fuel leakage is also dangerous and should be taken care of immediately.
Bad fuel pressure regulator no start. If the fuel pressure regulator s diaphragm or any of the seals fail fuel leaks can occur. There should not be any fuel dripping from the hose. There is not enough fuel reaching the combustion chambers.
Regardless of how many times you start the engine it won t turn on. But now that it won t start it is possible that the fuel pump may be going. It can be a problem in the spark plug or the ignition coil.
A fuel leak occurs when the diaphragm or seal of the fuel pressure regulator is damaged and fails. A faulty fuel pressure regulator may result in fuel pressure that is too high and a rich running condition. The regulator is externally mounted and can leak if the diaphragm ruptures or one of its seals fail.
A faulty regulator can not only leak gasoline which is a potential safety hazard but can also cause performance issues as well. Try to see what the fuel pressure is when you cycle it. This is one of the most frustrating situations that can confront any driver especially when you are in a hurry.
From what you describe it sounds like the idle air control valve was having issues. A fuel injector problem can also cause engine misfires. If there is fuel in the line your regulator may have a problem.
The vacuum applied to the regulator would reduce fuel pressure returning. It should be around 45 psi. Or download if you can safely the correct procedure and specs.
There are also many causes of engine misfires. Find the vacuum hose attached to the regulator and remove it with your hand. Alternatively a bad fuel pressure regulator can also result in fuel pressure that is too low causing a lean condition.
Put the vacuum hose back on the regulator. Get the book or the disc. It is also one of the symptoms of a bad fuel pressure regulator.
Run all the tests for a no start. A problem with this device can lead to low fuel pressure. Another symptom of an issue with the vehicle s fuel pressure regulator is fuel leaks.
More than just the engine misfire the engine will also most probably not start when the fuel pressure regulator is bad. Start the engine with your pressure gauge still attached. Locate the fuel pressure regulator on the rail.
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