Guy I used to know many years ago had Renault 2CV. For those who are not familiar with the car it had small four cylinder engine in the rear. He was meticulous mechanic, he didn't drive it much but worked on it every weekend. The car suddenly developed a problem. It would idle just fine but would run poorly under the load. So he got his toolbox from the trunk (that was in the front of the car) and a rag he had neatly stored in a side pocket of the trunk. He checked timing, carburetor, capacitor etc and all was just perfect. He would rev up the engine and it would run and sound right. He puts the toolbox to the trunk and neatly folds the rag and stuffs it in the side pocket, closes the trunk and takes s test ride. Same symptoms, the car has no power. He rechecks everything again and finds no issue. Pissed off he just throws the toolbox back and tosses the rag in the trunk, slams the hood and takes another test ride. The car runs like a clockwork. He returns opens the hood folds neatly the rag and stuff that in the side pocket. Car has no power. The car was made for Sahara desert when French still ruled Morocco. To get cleaner air to the engine there was a duct in the body of the car from the engine compartment to the trunk to the side pocket where he was storing his neatly folded rag.
