I pulled off hose from fuel pressure regulator and theres a little gas in the line, should I replace it, is that my problem why it starts harder when the engine is warmer, when cold it starts most of the time.
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First and most important, check the fuel rail,injectors and fuel lines to the engine and make sure you have no leaks. If you can't see the injectors on the back side, get a mirror and good light. This needs checked. Next check the fuel pressure regulator. pull the vacuum hose off of it and smell for gas in/at the hose. If you smell gas, replace the regulator. Next check all the vacuum lines broken ones cause a lean mixture and the computer will throw more gas to the engine. You must have the check engine light on, Check for codes. If it isn't check for codes anyway.
find the fuel pressure regulator. you should see it mounted on the return line of the fuel rail under the plastic engine cover. it will have a small vacuum hose attached to it. Remove the hose and see if gas comes out of the regulator. If it does replace it immediately.
If it is on the fuel rail, it sounds like the fuel pressure regulator. Pull the vacuum hose off it and check for evidence of gas there. There should be no gas in the vacuum line, but if there is, it is a failed regulator. If the gas is coming from where the regulator sits, the o-ring is probably bad. Pull the device off and check the o-ring, and replace it with a new one.
fuel pressure regulator would be the first thing i check pull vacuum line off and if the line is wet with gas or squirts out of the regulator then it needs replaced. if you check fuel pressure the pressure should go up 10psi when you disconnect the vacuum hose to the regulator.( with the engine running)
Improve the FixYa experience for everyone by voting. Hi Steven Phillips: It's possible but not very likely unless there has been a recent removal of the injectors and new O rings were not installed. I suggest that you take the vehicle to the closest AutoZone and have them perform a fuel pressure test and a full diagnostic scan. Both are free of charge. It's possible that you have leaking fuel line or fuel pressure regulator. The pressure test will enable you to evaluate both possibilities. Incidentally, replacing O rings, fuel lines and pressure regulators are fixes you can do yourself. Feel free to follow up with me should you so desire. All the best, Ben
recommend you pull the vacuum hose off the fuel pressure regulator at the end of the fuel rail and check for gas in the line. You can plug the hose with a golf tee and start the car, then see if any gas comes out of the vacuum port of the regulator. This would indicate the regulator diaphram has failed and is causing the engine to run rich. Replace the regulator if it leaks gas out the vacuum port. The regulator looks like the below picture.
start right back up? if it does , then pull the vacuum hose off the fuel pressure regulator and and a stall . if gas comes out of the regulator/and hose. Thats the problem , bad diaphram in fuel pressure regulator!! $45.00 @ auto parts store , snapring pliers is only tool you'll need!! ($5.00 tool) Chep and easy!! :) Hope this helps!! Richie
what happens when it does finally run, does it run rough, black smoke?? if the fuel pressure regulator is leaking it COULD causet his problem. Find the regulator and take the vac hose off, if there is fuel in the hose, replace the fuel pressure regulator.
Check your fuel pressure and filter. Also check to make sure your fuel pressure regulator is not blown out. Simple check is to pull vacuum line off at regulator and see if there is fuel present in that line. If there is then the regulator is bad .
Hope this helps;