Ignition system: Difference between revisions
Jump to navigation
Jump to search
Ricebubbles (talk | contribs) (Added detail for spark plugs.) |
Ricebubbles (talk | contribs) mNo edit summary |
||
| Line 3: | Line 3: | ||
==Issues - Spark Plugs== | ==Issues - Spark Plugs== | ||
* | * Old spark plugs can show worn electrodes and a wider than specification gap. | ||
* Broken | * Broken insulators are common during removal of OEM plugs. | ||
* Fouled spark plugs | * Fouled spark plugs. | ||
* Corroded spark plug threads make it difficult to remove an old plug. Solution is to use high temperature anti-seize grease available from autoparts stores when re-installing new plugs. | * Corroded spark plug threads make it difficult to remove an old plug. Solution is to use high temperature anti-seize grease available from autoparts stores when re-installing new plugs. | ||
==Parts - Spark Plugs== | ==Parts - Spark Plugs== | ||
* 2003 Update W220 S500 Chassis Number: 220.175 and Engine Number: 113.960 | * 2003 Update W220 S500 Chassis Number: 220.175 and Engine Number: 113.960. | ||
* M-B part number is 003-159-66-03-26 which is the same plug as the Bosch F 8 DPP 332 which is no longer available. | * M-B part number is 003-159-66-03-26 which is the same plug as the Bosch F 8 DPP 332 which is no longer available. | ||
* Bosch equivalent spark plug is FR8DPP33+. | * Bosch equivalent spark plug is FR8DPP33+. | ||
| Line 15: | Line 15: | ||
[[File:Spark_Plug_Bosch_FR8DPP33+.JPG|300px|center]] | [[File:Spark_Plug_Bosch_FR8DPP33+.JPG|300px|center]] | ||
* Denso equivalent spark plug PK16PRL11. (Denso OE quality resisted platinum spark plug with pre-set gap of 1.1mm.) | * Denso equivalent spark plug PK16PRL11. (Denso OE quality resisted platinum spark plug with pre-set gap of 1.1mm.) | ||
==Service - Spark Plugs== | |||
* M-B specifies replacement of plugs at every 100,000Km or 4 Years. Spark plug HT wires don't last much longer than that either. | |||
* Set the spark plug electrode gap to 0.039” or 1mm. | |||
* Tightening torque 15 - 22 ftlbs or 20 - 30Nm. | |||
==Parts - HT Wires== | ==Parts - HT Wires== | ||
Revision as of 12:31, 20 March 2015
Description - Ignition System
Edit required.
Issues - Spark Plugs
- Old spark plugs can show worn electrodes and a wider than specification gap.
- Broken insulators are common during removal of OEM plugs.
- Fouled spark plugs.
- Corroded spark plug threads make it difficult to remove an old plug. Solution is to use high temperature anti-seize grease available from autoparts stores when re-installing new plugs.
Parts - Spark Plugs
- 2003 Update W220 S500 Chassis Number: 220.175 and Engine Number: 113.960.
- M-B part number is 003-159-66-03-26 which is the same plug as the Bosch F 8 DPP 332 which is no longer available.
- Bosch equivalent spark plug is FR8DPP33+.
- Denso equivalent spark plug PK16PRL11. (Denso OE quality resisted platinum spark plug with pre-set gap of 1.1mm.)
Service - Spark Plugs
- M-B specifies replacement of plugs at every 100,000Km or 4 Years. Spark plug HT wires don't last much longer than that either.
- Set the spark plug electrode gap to 0.039” or 1mm.
- Tightening torque 15 - 22 ftlbs or 20 - 30Nm.
Parts - HT Wires
Edit required.
A new plug wire resistance is approximately 2.18K ohms.
Issues - HT Wires
- Spark HT wires have a limited life.
- The resistance element in the HT wires often fails or goes high resistance due to fatigue.
- HT lead insulation can break down causing arcing to ground.
- A special spark plug wire removal tool is available. It is a 17mm, open ended tool with a 25mm off-set and is made by JTC with part number J-1308. It can be found in eBay for $20.
JTC Spark Plug Wire Removal Tool J-1308
- The rubber boot on the HT Wire is difficult to remove from a spark plug even when using the special removal tool. Solution is to apply a small quantity of dielectric grease when re-installing new plugs. This helps keep moisture away and stops corrosion. Makes it infinitely easier to remove HT Wire boot.
- A regular 5/8" spark plug socket with a rubber insert works well for removing spark plugs. However the secret is to use a variety of extensions eg a short 1" 3/8" drive extension on the tight spots in conjunction with a with swivel head.
Permatex 22058 Dielectric Tune-Up Grease
Description - Ignition Plug Pack
Edit required.
Issues - Ignition Plug Pack
- Burnt coil.
- Cracked Pack.
DIY Procedures - Ignition System
Repair - Ignition Plug Pack
Article by Benz World Member haoz129 Howard on fixing a burnt coil pack, right bank, on cylinder 4 which threw the following codes:
- P2050 Misfiring , Damages TWC (P0300) STORED
- P2056 Misfiring of cylinder 4, damages TWC (P0304) STORED
- P205B Misfiring of cylinder 8, damages TWC (P0308) STORED
http://mbworld.org/forums/s-class-w220/431985-ongoing-maintenance-repair-2003-s600-2.html