Customer Concerns of Oil Fouling/Misfire on Hard Acceleration with Spark Plugs (181788)
Spark Plug: Customer Interest
Spark Plugs - Oil Fouling/Misfire on Hard Acceleration
Models
1978-1989 MMC Engines With Jet Valves
Subject
Oil Fouled Spark Plug(s) Miss & Bucking Under Hard Acceleration
Index
FUEL
Date
October 17, 1988
No.
18-17-88
C18-21)
This bulletin updates Technical Service Bulletin 5/14/88 and serves as a reminder that driveability problems may be caused by mechanical problems as
well as fuel system problems.
FIGURE 1
SYMPTOM/CONDITION
One or more (seldom occurs to more than one cylinder) spark plugs will be oil fouled and may show ground and center electrode erosion due to
overheating (Figure 1).
Under hard acceleration (wide open throttle) engine will miss and buck.
