Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection — Idle check and procedure
EF & EC-390flowchartSR20DE ignition timing 15°±2° B.T.D.C.; SR20DET 20°±2° B.T.D.C. WORK SUPPORT (CONSULT) path vs. manual throttle-sensor-disconnect path. Page is in the SR tab of the EF & EC section.
Idle check and procedure
1
START
2
Visually check the following:
• Air cleaner clogging
• Hoses and ducts for leaks
• Electrical connectors
• Gasket
• Throttle valve and throttle sensor operation
3
Start engine and warm it up until water temperature indicator points to the middle of gauge. Ensure engine stays below 1,000 rpm.
4
Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.
5
Perform E.C.C.S. self-diagnosis (mode II).
O.K.
return to step 7
N.G.
6
Repair or replace components as necessary.
7
Run engine at about 2,000 rpm for about 2 minutes under no-load. Race engine two or three times under no-load, then run engine for about 1 minute at idle speed.
8
1) Select "IGN TIMING ADJ" in "WORK SUPPORT" mode.
2) Touching "START".
OR
9
Race engine (2,000 - 3,000 rpm) 2 or 3 times under no-load and then run engine at idle speed.
10
Check ignition timing with a timing light.
SR20DE: 15°±2° B.T.D.C.
SR20DET: 20°±2° B.T.D.C.
N.G.
1
O.K.
11
A