Which Plugs (AGAIN)
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 63
Likes: 0
From: SoCal
w210 E55, w124 wagon
Which Plugs (AGAIN)
A there everybody. 01 CLK55 here. I'm keeping my stock wires & have tried to locate non-resistors to no avail. Have read pretty much all the relevant info (most of which are from a couple years back) & still can't find a definite answer. So, which plugs should I use? Bosch 7422, NGK 5464 or 7090? Thanks, in advance.
Member
Joined: Dec 2008
Posts: 209
Likes: 0
From: Syd, Australia
2012 C63
Hi Tym4rnr, how's the car running after the change? I'm thinking about doing mine soon, it's done just over 80000kms. Also, did you have to replace the fuel filter? The mechanic I use from time to time tells me that it's a good idea to do at the same time.
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 63
Likes: 0
From: SoCal
w210 E55, w124 wagon
@joellp. I did not have to change the fuel fliter but I did. For the most part, the car is running better. I have noticed a slight difference in lag upon start-up but nothing major. Some have suggested to check the gap on the new plugs which I did not do before installing them. The Iridiums, i'm told, should not be regapped since the tips are quite sensitive compared to Plats. According to the NGK "code", the gap is 1.1mm and I need it to be 1.0mm.
