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Old 05-10-2001, 10:48 AM
Registered User
Join Date: Apr 2000
Location: San Antonio, TX
Posts: 387
Plug cleaning??

Steve, is there another recommended method to cleaning plugs?
Bill Streep
San Antonio
'57 190SL (toy)
'08 S5500 (mine)
'09 CLK550 (wife's)
'06 SLK350 (daughter's)
'11 GLK350 (daughter's)
'03 CLK310 (spare)
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Old 05-16-2001, 03:38 AM
Registered User
Join Date: Apr 2001
Location: Hawaii
Posts: 147
Plugs Are Here!!!

Hi All:

Well, I got the new Iridium plugs for my 1987 260E one week earlier than expected. With shipping to Hawaii it costed $16.00 per plug.

After installation, the first thing I noticed was a very high idle. My mechanic immediately took care of this problem. From a idle of 700rpm it idled at about 1800rpm with just a plug change.

Now my idle is silky smooth and the car has some real get up and go. I am very happy with them.

It seems to have a smoother acceleration and I do feel a difference in power. It feels like it has more torque. That I am pleased with. I don't have pinging like I did with the Bosch platinum plugs.

I think since it runs smoother I will have better gas mileage unless my foot has something to say about that. I average about 20-22mpg right now and I will let you know after a few fillups.

Well, that is a wrap for now on the new plugs. I will keep you all posted on occasion on how the wear on the plugs are and if I encounter any plug related problems.

1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles
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Old 05-17-2001, 02:07 AM
Registered User
Join Date: Jan 2000
Location: PA
Posts: 5,440
I have some old IH Diesel engines that have spark plugs in them. Can you figure that out?

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Old 05-24-2001, 01:11 AM
Registered User
Join Date: Apr 2001
Location: Hawaii
Posts: 147
Final Verdict

Hi All:

Well, I am impressed with these plugs. My 1987 260E now has a silky smooth idle, smooth acceleration and I now average 25mpgs.

I have picked up 3 mpgs overall. The car is a joy to drive. (as if it wasn't before)

I used the plugs IT16 part number (5325).

My impression, I love them. Well worth the money. They run great but the downside is that it is very expensive.

1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles
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Old 05-24-2001, 01:30 AM
450 SLC 5.0
Posts: n/a
If you squeeze a snake REAL hard, you'll eventually extract some oil :)

Ever heard of the placebo effect? Enough said.
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