Campaign - Spark Plug
86mazda07SPECIAL SERVICE PROGRAM (SSP03) 1986 & 1987 RX-7 SPARK PLUG
TO: All Mazda Dealers
ATTENTION: All General Managers & Service Managers
SUBJECT: 1986 & 1987 RX-7 Spark Plug Service Program
Dear Dealer:
Mazda Motor Corporation has decided to conduct a service program for spark plugs on certain 1986 and 1987 RX-7 models starting on September 1, 1986.
There is a possibility that the insulator around the center electrode of the spark plugs on 1986 and 1987 RX-7s may crack and pieces of the insulator may fall into the engine, resulting in engine damage such as low compression, etc.
Detailed procedures for this program are shown on attachments I and II. The letter to be sent to the owner is attachment III.
If the subject vehicles are in your inventory, you are requested to complete the necessary work before delivery.
Should you have any questions, please contact your District Service Manager.
Your cooperation in carrying out this program is greatly appreciated.
Attachment I
1986 & 1987 RX-7 Spark Plug Service Program
Note: The spark plug information has been updated.
A. Description of the Program
All (4) spark plugs of the subject vehicles will be replaced with modified ones between September 1, 1986 and August 31, 1987.
B. Subject Vehicles
The subject vehicles are certain 1986 and 1987 RX-7 models within the following VIN ranges.
1. 1986 RX-7 model
JM1FC331*G0100001 - JM1FC331*G0150450
2. 1987 RX-7 Turbo model
JM1FC332*H0100001 - JM1FC332*H0152627
NOTE:
The modified spark plugs have already been installed on some of the subject vehicles at the port and/or factory. Therefore, some vehicles will not require the replacement work. Refer to the repair procedures for details.
C. Repairs for Units Already Retailed
1. 1986 RX-7 model (Non-Turbo)
No owner notification will be sent to 1986 RX-7 owners. Please check the spark plugs during regular scheduled maintenance (or any other opportunity) and replace the spark plugs, if necessary.
2. 1987 RX-7 Turbo model
An owner mailing will be conducted for all subject 1987 RX-7 Turbo models because it is expected that the rate of failure will be higher than the non-turbos. Those owners will be notified on or after September 1, 1986 by first class mail. In addition to the owner notification, each dealer is requested to expedite this program by calling owners.
D. Necessary Parts
Spark Plug Set - OldN3X0 18 110 (Qty: 1) NewN3X4 18 110 (Qty: 1)
This includes:
1. Spark plugs for the leading side - Qty: 2
2. Spark plugs for the trailing side - Qty: 2
NOTE:
A program label is not necessary.
E. Repair Procedures
Refer to Attachment II.
F. Warranty Information
1. When replacing the spark plugs:
Customer Comment Code: 99
Damage Code: 99
Part Number of Main Cause: Old - N3X0 18 110 New - N3X4 18 110
Quantity: 1
Process No: A6-011A
Operation No: 18110X-R-X
Labor Hour: 0.3 hr.
2. When inspecting the spark plugs (1987 RX-7 Turbo only):
Customer Comment Code: 99
Damage Code: 99
Part Number of Main Cause: Old - N3X0 18 110 New - N3X4 18 110
Quantity: 0
Process No: A6-011A
Operation No: XX0113-R-X
Labor Hour: 0.2 hr.
Attachment II
Repair Procedure
1. Check the spark plugs as follows:
a) Disconnect the high-tension wires from the spark plugs.
b) Check if the modified spark plugs are installed. The modified spark plug can be identified by the paint marks as shown in the illustration.
2. If the modified spark plugs are not installed, remove the spark plugs and install the modified ones as follows:
Trailing Side (Upper Side): SD11A (with blue paint) Leading Side (Lower Side): SD10A (with yellow paint)
CAUTION:
Since different heat range spark plugs are installed in the trailing and leading sides, be sure to install them to the correct position. If they are installed opposite, cracking insulator of the spark plug may result.
3. Reconnect the high-tension codes to the spark plugs. Refer to the following chart for proper connection.
Attachment III
1986 & 1987 RX-7 Spark Plug Service Program
Owner Letter
Dear Customer:
According to our records, you own a 1987 model Mazda RX-7 Turbo.
Mazda Motor Corporation has found that improper heat-range spark plugs may have been installed in your car. This may result in cracking the insulator of the spark plug and possible engine damage. This program is limited to the following vehicle identification number range.
JM1FC332*H0100001 - JM1FC332*H0152627
We have made arrangements for you to have your spark plugs replaced at an authorized Mazda dealer free of charge after September 1, 1986. The repair must be completed before August 31, 1987.
It will take less than half an hour to complete this repair. We recommend that you call your dealer and ask if an appointment is necessary so that the inconvenience to you will be minimized.
Any problems encountered in this program should be discussed with your nearest authorized Mazda dealer or Mazda Distributor listed in your owner's Manual.
Please accept our apologies for any inconvenience. We hope you will understand that we are conducting this program to ensure your full satisfaction.