I'm not sure if any of you have seen my "my car is broke" posts, but I finally broke down and took it to a local dealership/shop. The guy said the reason the car was bucking was because the stock spark plug wires from kind of suck and cannot make the plugs produce enough ignition to burn the extra fuel, he said it was very common among evo's (atleast here in Japan). And the reason my car was stalling is because I have an aftermarket BOV, and that tube that goes back into the intake isn't there, which pushes air back into the intake to prevent the car from stalling. He told me to tighten the BOV spring to see if it helps..so far it hasn't stalled yet! I'm also having him hook my HKS EVC III back up!

 

Did you also replace the wires? If so, what brand did you use? What wires are the tuners over there using?

Thanks

 

Yeah.. FWIW I am noticing issues which feel like timing being pulled, but I'm convinced its spark or plug wire related.. but nobody that I know of has replaced the wires (and/or added an ignition box) that I know of.. So I'm also curious about any improvements by replacing the wires.

 

Yeah, Shiv did mention somewhere about sparkplug related timing pull issues... Al says it's all due to bad gas, but I wonder if some "noisy" engines (like mine :P) might not have some missfire issues? I would be very keen on changing the wires and/or plugs if this could help the noise reduction.... Maybe this thread should be moved to the Evo Engine / Turbo / Drivetrain forum?

 

is a '93 an Evo II or Evo III?

How has it been holding up besides those problems?

 

Hmmm.... I assumed he was posting about an EVO 8.... I guess it's not even close eh? Geez, I ought to pay more attention. Thanks for the heads up

 

It's an Evo I..late model. Other than those problems it runs great!

 

Awesome, an EVO 1!

Sorry to hear about your problems. I had a similar problem on my old VR-4. My plug wires had been fouled somehow when the y-pipe came off. Replacing the wires did help this problem. Since your car is a 93, this might have occurred with you as well. It does sound like you are already in capable hands, though.
Post some pics of your car if you get the chance.