My pump is leaking and i took the manifold off to check the o-rings and they seem to be fine and now i am trying to take the valve caps off to check the o-rings in there and cant seem to get them off how do i go about doing that.
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It's in the gas tank. Just make sure the fuel pump is the problem and not something else. Check for applicable trouble codes. There are some codes for the fuel pump driver module.
There is also an inertia switch, something to check.
i would check the throttle position sensor first, check for vacuum leaks, egr valve, i read a few things were people talking about a o ring under the separator. which is under the intake manifold. i would check the easy ones first before pulling your intake manifold off
Looks like it may be a fuel return line from the fuel manifold . It may be split or loose . Probably both . Get a new section of fuel hose and some good clips and replace it
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
A small leak/hole in a fuel vapor hose/tube
Other small leak in EVAP system
Faulty vent o-ring seal
Defective vent valve
Defective purge valve
Defective leak detection pump
what code is it?po440,p0455?If it is one of those codes it means you have a large evap system leak not a vacuum leak by the engine.the evap leak is most likely a inop vent valve or a fuel cap not properly sealing.
Something is probably leaning out the mixture when you open the throttle. It seems that any ignition issues have been ruled out.
So, check the following: fuel filter clogged, low fuel pump pressure, the fuel pressure regulator could be stuck at the idle setting, the EGR valve could be stuck open, faulty throttle position sensor (TPS) or circuit, faulty manifold absolute pressure (MAP) sensor, faulty or dirty manifold air flow (MAF) sensor, faulty intake air temperature (IAT) sensor, and an air leak into the intake duct or manifold between the MAF and the throttle body. I think if the intake manifold gasket had a leak, it would be misfiring at idle.
Ask the shop if any of the above checks have already been accomplished. I'll bet most of them have, but one may have been overlooked.
P0442 - Evaporative Emissions System Leak Detected (Small Leak)
P0455 - Evaporative Emissions System Leak Detected (Gross Leak)
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum. If pressure does not increase, the ECM
will check for leaks in the line between the fuel tank and EVAP
canister purge volume control solenoid valve under the following vacuum
test condition. The vacuum cut valve bypass valve is opened to
clear the line between the fuel tank and the EVAP canister purge volume
control solenoid valve. The EVAP canister vent control valve will then
be closed to shut the EVAP purge line off. The EVAP canister purge
volume control solenoid valve is opened to depressurize the EVAP purge
line using intake manifold vacuum. After this depressurization is
implemented, the EVAP canister purge volume control solenoid valve will
be closed.
Causes: - Missing Fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - Incorrect fuel tank vacuum relief valve - Leak is in line between intake manifold
Solutions: - Re-tighten or replace fuel tank filler cap - Replace damaged or leaking EVAP canister - Replace damaged or leaking lines.
As per the error code there should be gas leak from the Air Conditioner. Please visit the link below for a complete service manual with diagrams for more details, I hope it should help:
I had the same problem. I changed the pcv valve and checked the hose. It still did the same thing. Then I checked the metal tubing that the hose connects to and found it was full of hardened gunk. I sprayed PB Blaster into the tube let it soak for awhile. Then took an old choke cable, put it on a drill and ran it into the tube like a drain snake. It took a while of doing this over and over but eventually got it cleared out. Now, no more oil all over the engine and hood compartment.
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