Spark plug Question - MBWorld.org Forums

May 20, 2006 | 12:02 AM

Rod Spohn

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Senior Member

Joined: Apr 2004

Posts: 393

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From: Mesa, AZ

2011 E350 Bluetec, 1996 S320 & 2006 E320 CDI Sold to my son & 2017 GMC 2500 Diesel Pick up

Spark plug Question

Its time for a tune up and I was thinking of trying the 4 electrode plugs I've seen in Proformance products catalog. Are these really any better than standard plugs? Any preferances you guys have? ( I have a 96 S320 ) Is it worth the cost for these plugs?
Thanks
Drive on

May 20, 2006 | 01:31 AM

NZ_Benz

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Joined: Apr 2006

Posts: 2,290

Likes: 1

From: New Zealand

1993 300SEL/S320

Quote:

Originally Posted by Rod Spohn

I have seen people use the platnium plugs and they last a bit longer. Put it this way with the size of the car and the engine etc, there will not be a hell of a lot of performance difference. The car was designed with the OEM plugs in mind so why not stick to it.

May 20, 2006 | 11:45 PM

brett san diego

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Joined: Apr 2004

Posts: 105

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1997 S600 Sedan

Just go with factory recommended plugs. Too many bad experiences in the old Porsche 911 camp for me to think about using the Platinum +4 plugs in any car.

Brett

May 21, 2006 | 07:57 PM

Hattaresguy

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Joined: Aug 2004

Posts: 240

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From: Milford, CT

1987 300SDL aka the "Money Pit"

Quote:

Originally Posted by Rod Spohn

Don't, your car won't run right. Stick with the Bosch plugs that MB specs. They cost a whole $2 each from the dealer and take all of 10 minutes to change. Change every 30k.

I think this:F 8 DC4 is the number you need.

May 22, 2006 | 02:15 PM

Rod Spohn

Thread Starter

Senior Member

Joined: Apr 2004

Posts: 393

Likes: 2

From: Mesa, AZ

2011 E350 Bluetec, 1996 S320 & 2006 E320 CDI Sold to my son & 2017 GMC 2500 Diesel Pick up

OK went with the Bosch, also replased the fuel filter. The car runs great Except it sometimes is "a little" hard to start. I have to give it a little throttle to get it started and it kind of surges when it starts. Like revese up and then evens out. I thought the plugs and filter would do it since they are @ 41k miles. any Ideas.

Thanks
Drive on

May 23, 2006 | 01:25 AM

brett san diego

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Joined: Apr 2004

Posts: 105

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1997 S600 Sedan

You shouldn't have to give any throttle to start an electronic fuel injection car. Sound like it's not getting enough fuel. Fuel pump, fuel pressure regulator, air mass meter, or maybe the engine computer (ECU)? These are wild guesses, by the way.

Brett