Diagnostic Procedure 19 — Surge
EF & EC-283flowchartDiagnostic Procedure 19 — Surge
1
CHECK INTAKE AIR LEAK. When pinching blow-by hose (lowering the blow-by air supply), does the engine speed rise?
Yes
Discover air leak location and repair.
No
2
TRY A KNOWN GOOD E.C.U.*
INSPECTION END
NOTE
*: E.C.U. may be the cause of a problem, but this is rarely the case.