Ok guys, here we go with my new problem. Start the car - cranks and fires right away. Idles beautifully, lambda system unhooked and air/fuel screw adjusted for "perfect" steady idle. Lightly push the accelerator, car runs ok. Push the pedal to 1200 rpms+ (I would guess about 1/4 push down on the pedal), and the engine stutters heavily, cylinders popping on and off completely randomly, extreme engine bogdown. If the car maintains a steady speed and the pedal is pressed firmly while keeping a slowly incrasing speed, the engine is strong and runs great. If the pedal is pushed very hard and firm from a dead stop, the car almost loses power completely; one can feel the car almost give up it loses so much power. This is with the engine cold, warm, or hot - anytime. My symptoms sound EXTREMELY similar if not identical to Rich Acuti's article on "General Tuneup Issues" at http://dmcnews.com/Techsection/tuneup.html . I have placed the Bosch K-Jetronic Fuel Pressure Gauges on the car, and all the values are dead on and perfect. The car holds rest pressure, steady fuel pressure; every gauge measurement is perfect. I have replaced all 11 vacuum hoses with silicone vacuum hoses. The thermal vacuum switch is working properly; I'm getting vacuum from the appropriate hoses. I have the "old blue" coil bought in April 05. All the connections underneath the coil cover are firm and intact. The lambda system - if I choose to hook it up - functions correctly in all aspects. With the lambda system hooked or unhooked the car experiences this "engine bogdown". I cannot find one vacuum leak anywhere in the engine compartment; I have THOROUGHLY soaked the engine with fluids and not one idle fluctuation. There was one vacuum leak on the coal canister; the closed rubber hose on the little valve labeled "carb" was totally rotted, but we put a brand new rubber hose on it with a clamp to secure it and still the engine bogs. I am completely baffled by this. What would cause the engine to accelerate so wildly and bog the engine down so hard? Anyone, please, give me anything you can think of. This car is my driver, so I have to deal with this every single day I drive it. My guess is it's ignition related. On that note, my ignition timing is in the 13-15 degree mark - just FYI. Could this just be a case of bad spark plugs/spark plug wires/cap and rotor/dirty grounds? I'm ready to do all that stuff; I may need a little help locating the grounds Rich mentioned in the tech article, but dangnabbit to fix this problem I'll learn real fast. One of my first suspects is the spark plug wires. How do you go about testing them with a multimeter? I am a little familiar with how to use one; I just need to know what settings to utilize on the multimeter and how exactly to test the spark plug wire? Sorry for the long post guys; I just want to get this resolved. Jeremiah __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/