Sounds like your auto mech. teacher is a teacher because he isn't good enough to be a real mechanic...
Injectors don't squirt more fuel than when they are brand new...only less (when clogged). This won't cause bad gas mileage.
The CEL stuff is BS also...If it's not a hard fault code it won't trip the CEL...it is still a code to tell you something is wrong though.
I already told you how to check the fuel pressure regulator: "check the fuel pressure (or pull the vacuum line off the regulator and see if there is any gas in it). "
You can also put a fuel pressure gauge on it to check...
Injectors don't squirt more fuel than when they are brand new...only less (when clogged). This won't cause bad gas mileage.
The CEL stuff is BS also...If it's not a hard fault code it won't trip the CEL...it is still a code to tell you something is wrong though.
I already told you how to check the fuel pressure regulator: "check the fuel pressure (or pull the vacuum line off the regulator and see if there is any gas in it). "
You can also put a fuel pressure gauge on it to check...
CAI + EFI = Pull MAF sensor module from the top of the box (two torques bits) and VERY carefully clean the wires. Use electronics parts cleaner, or VERY carefully scrape the **** off of both those wires...... If you break those wires you will be buying a new one....
Oil from the K&N type filter gets pulled onto the MAF sensor wires and screws up the sensors ability to tell the difference in tempiture between the inside consistantly heated wire and the outside air coming in, or something like that.
Oil from the K&N type filter gets pulled onto the MAF sensor wires and screws up the sensors ability to tell the difference in tempiture between the inside consistantly heated wire and the outside air coming in, or something like that.
a clogged cat normally causes a massive loss of power, and can cause gas mileage problems. This was a very common problem with the 3.0L Duratec escapes and mazda tributes, pedal to the floor they wouldnt do more than 30mph when they got clogged, rather severe. Best way to check this stuff is unbolt the exhaust, take it for a drive.
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