Originally Posted by Dario99gst
I do not recommend buying miscellaneous parts. Don't you have a friend that could swap out parts with you just to try to narrow down the problem? Plug wires aren't exactly cheap especially since it is not recommended to use anything other than factory. I had a similar problem about a year after I bought my car. I changed my plug wires plugs and bought a new coil pack. then I started buying the fuel parts like fuel filter fuel pump fuel pressure regulator I did all that just to narrow down a problem that still wasn't fixed. Do you know what was wrong with my car??
I bent 2 valves and actually chipped another in two places so there were two pieces missing. Anyway learn from my mistake and don't start randomly replacing things. Yes its nice to know you have all new parts but do you really want to start wasting money on something that may or may not fix the problem?
PS I was at my parents house the other day and found my old set of plugs you could test them on your car to see if that is the problem.
I do agree with that. Having a friend or fellow DSM'er would be helpful. I'd still say try replacing the plugs though, since they are not too expensive. The wires on the other hand, are a bit pricey.
You'll know when you have bent valves or a "stuck open" valve, because the car will literally run like shit, to the point that it's nearly undriveable, or is undriveable all together.
If you can technically drive your car still, even though it shudders/shakes a quite a bit, I'm willing to bet it's spark/fuel related.
Suprised no one mentioned this, but, is your car throwing the CEL? If so, you could limp it up to an auto parts store and have it scanned for free, or see if a fellow DSM'er here is willing to come out to your place and scan it for you.