Re: 924 1983 | Motor verzuipt hevig, na vervangen lucht systeem
Als alle luchtslangen vervangen zijn en hij nu geen valse lucht meer trekt zou ik aanraden om de volgende basis afstelling uit te voeren voordat je de juiste lucht/benzine mengsel kan meten (CO tussen 1 en 2%), ......
Basic idle speed and mixture setting
Throttle stop screw setting; take a thin paper between screw and butterfly lever and position stop screw against the paper. Now turn stop screw ½ turn clockwise and block screw
If the idle speed and mixture adjustments have been totally screwed up. Start from scratch. close the idle speed all the way down, then turn it out two complete turns.
Start the engine, adjust the idle mixture so the car will at least run well enough so it will warm up. Don't leave the Allen wrench in the adjustment hole when you are checking the changes you have made. The weight of the wrench can influence the working of the throttle sensor plate. And don’t push down real hard for the same reason. The hole where the wrench goes in bleeds enough air to throw the mixture adjustment off slightly, so you are going to want to reinstall the plug when you are done, and make a final check.
After the engine is warmed up, check the ignition timing first. Then set the idle speed. Then adjust the idle mixture from rich to lean making note of the range in which the adjustment can be rotated and the engine speed does not fall off, or rise significantly. Then set the mixture adjustment to the centre of the range.
Check the idle speed. Is it correct?
If not, adjust the idle speed, then readjust the idle mixture adjustment to the centre of the range.
Now blip the throttle. Does the engine speed rise smoothly, or bog down? If it bogs down, the mixture is too lean, and you need to adjust the mixture a little richer. Not too much, an 1/8 of a turn at a time can make a difference. I use an axtra long allen wrench, and pay attention to the handle at the top to keep track of how much I have rotated the adjustment.
Now go to the back of the car and look at the exhaust pipe. Can you see the exhaust coming out? What color is it? Blue smoke at idle, sorry, you have a worn engine. Black smoke, still too rich for some reason. Did you wait for the engine to warm up before starting? How does it smell? Like overheated metal? Bad cat, or too lean, maybe a cracked exhaust manifold. Does it smell like gas? Again too rich.
After this check the CO2 level to be between 1 and 2 (1,5 is OK)
Succes,
Pierro
Mercedes W124 1989 / Porsche 924 1983 restored / MG-Midget 1973 restored / Rover 1275 Mini 1992 restored
Citroen 2CV6 1986 restored / Renault N72 restored/ Mazda MX-5 1.8 for the fun / Toyota Landcruiser Prado daily driver