Ever since I have had my VX I have had an idling/misfire problem. I have been very patient with it and have tired almost everything.
My symptoms are:
To start the VX I have to depress the gas every time, while turning the key.
I have a slightly abnormally low mpg.
I emit more than normal exhaust
**Check engine light comes on*** code P0300 – Engine Misfire Detected++ This is THE PROBLEM.
I need help to solve this problem!
What I have done/replaced thus far.
1.)Brand new MAF sensor. (still have the old one and think it works fine.) (PepBoys diagnosed it and said that was the only problem with my VX.)
2.)Replaced spark plugs to NKG 5456…other than the back right one so far
3.)Cleaned the EGR by spraying choke cleaner into the small hole with the engine running. (Made sure the pindle was working properly. But noticed that the underside of the EGR valve seems like there was metal flakes on it. Any suggestions what that is>) Is there supposed to be any type of non metal gasket here?
4.)I have sprayed electric circuit spray into each plug/connector visible/reachable.
5.)Changed the PCV valve with my two oil changes so far (I have only had the VX since Sept. but I changed the oil to full synthetic, and read when doing so change the oil and filter once and once again after about 1,500 miles because its going to be extra dirty.)
6.) Changed the fuel filter
I think that is it so far. It costs me a bit so far, more time than money really
I do have the ScanGuage hooked up permanently, so information is available to me. For SG users I do have the PIDS written down but do not know if that would help or what they mean?
While cleaning the EGR I did notice a lot of carbon build up. I would like to open up the top of the engine and clean it out. How do you do this and how easy and safe? I am afraid of taking it off and not being able to get it back on. Is there a how to on this?
What DO I DO NOW????
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