Diagnostic Procedure 17 — Lack of Power and Stumble / Diagnostic Procedure 18 — Detonation
EF & EC-282flowchartDiagnostic Procedure 17 — Lack of Power and Stumble
1
CHECK FUEL PRESSURE. 1. Release fuel pressure to zero. (Refer to page EF & EC-353.) 2. Install fuel pressure gauge and check fuel pressure. At idle: Approx. 245 kPa (2.45 bar, 2.5 kg/cm2, 36 psi). The moment throttle valve is fully open: Approx. 294 kPa (2.94 bar, 3.0 kg/cm2, 43 psi)
N.G.
Check fuel pressure regulator diaphragm.
O.K.
2
CHECK FOR INTAKE AIR LEAK. When pinching blow-by hose (lowering the blow-by air supply), does the engine speed rise?
No
INSPECTION END
Yes
Discover air leak location and repair.
Diagnostic Procedure 18 — Detonation
1
CHECK FOR INTAKE AIR LEAK. When pinching blow-by hose (lowering the blow-by air supply), does the engine rpm rise?
Yes
Discover air leak location and repair.
No
2
CHECK FOR OIL LEAK TO COMBUSTION CHAMBER. Remove spark plugs and check for fouling with oil.
No
INSPECTION END
Yes
Check pistons, piston rings, valves, valve seats, valve oil seal, engine oil level, etc.