Leaderboard

That's normal operation. The duty solenoids allow extra air to mix into the fuel in the emulsion tubes, leaning the mixture. Off all the time, mixture is too rich and you get black smoke from the exhaust. On all the time, mixture is too lean, you knock and can't go up hills. The ECU varies the on/off duty cycle (hence the name) to adjust the fuel mixture in the middle of this range, until the oxygen sensor is happy, cycling just above and below stoichiometric.

Made a tube to brace the radiator support longitudinally and to protect the exhaust. Bracket bolts to the body right in front of the subframe where the bumper brace was bolted in stock. Added a tube to brace that and protect the oil filter and cooler. Tubes welded back in to connect the radiator support to the bumper and to mount a piece of sheetmetal. B cut a piece of 1/8" 4130 plate for the front of the skid and I welded that in. Old airbox guard was mostly destroyed so I made a new one. Welded as much as I could on the car, then we unbolted it. B cut a piece of 4130 sheetmetal to protect the condenser and radiator. Radiator and condenser mounts welded on new radiator support. Basically ready for paint. I would like to get this thing back on the road ASAP but I'm going to see if the paint shop can get this all painted up fairly soon. Have new lines/hoses for the oil cooler, new radiator, etc. B took a pair of good engine mounts off my spare EZ30. So we have to swap some of that out.