Adjusting the engine idling speed
Connect the tachometer according to the instruction manual.
Turn on high beam headlights.
Start the engine and bring the crankshaft speed to 3000 rpm, after 30 seconds, reduce the engine speed to idle, i.e. up to 900-1000 rpm.
Note. If the fuel injector lines are disconnected or replaced before adjusting the engine idle, run the engine a few times at 3000 rpm and at idle.
Set the idle speed of the crankshaft within 900-1000 rpm with the adjusting screw 1 (see photo), located on the throttle body.
Cross section of the mixture regulator: 1 - diffuser of the air flow meter; 2 - pressure disk; 3 - system of levers; 4 - counterweight; 5 - distribution plunger; c - fuel dispenser.
Carbon monoxide regulation (SO) in exhaust gases
Note. When adjusting the CO content, do not press or pull out the adjusting screw. After installing the socket wrench into the screw head, do not press the accelerator pedal, so as not to damage the adjusting screw.
Connect the gas analyzer according to the operating instructions.
Remove the plug of the mixture quality adjusting screw located on the fuel dispenser (see photo).
The principle of operation of the dispenser-distributor of fuel: 1 - valve spring; 2 - diaphragm; 3 - distribution plunger; 4 - slotted sleeve of the distribution plunger; 5 - lower chamber; 6 - upper chamber; 7 - fuel supply to the nozzles; 8 - control edge of the distribution plunger.
Using a socket wrench for screws with a turnkey socket, turn the mixture quality adjustment screw until the CO content is within 1.0-2.0%.
When the screw is turned clockwise, the CO content in the exhaust gases increases, and vice versa.
If it is necessary to turn the adjusting screw several times in one direction or another in order to achieve the desired CO content, then after each adjustment it is necessary to remove the key and lightly press the accelerator pedal.
After adjustment, put a new plug on the mixture adjustment screw.
After adjusting the engine idle speed, connect the crankcase ventilation hose.
Visitor comments