Spectra GSX L4-1.8L (2000)
Flex Plate: Technical Service Bulletins
Starting System - Hard Starting
SOURCE: Kia Technician Times
TITLE: Hard Start Update
APPLIES TO: Sephia
SERVICE TIP:
CONDITION
One or more of the following starting conditions may be experienced:
-
No start
-
Hard start/extended cranking when cold
-
Starter stall during cranking
CAUSE
A no start condition is many times caused by an inoperative ECU relay or fuel pump relay (assuming battery condition, cranking voltage etc. are OK).
The hard start/extended crank when cold and starter stall in A/T equipped vehicles is related to deflection of the engine flexplate when starter is
engaged. This deflection results in a corrupted crank angle sensor signal which in turn can alter injector pulse width and ignition timing during
cranking.
CORRECTIVE ACTION
When diagnosing for a no start condition, make certain both the ECU relay and Fuel Pump relays are functioning. As for the hard start/extended crank
when cold and starter stall conditions in A/T vehicles, the factory is developing and testing a more rigid flexplate. At this time, we don't have any
production change or field fix information, however, as soon as we determine what the fix will be, we'll get the information to you.
