[alfa] RE: was spark plugs, now hotter vs. colder

[Jonathan Thames <jthames@xxxxxxxxxx>]

Maybe it is the HL, then. Gotta get my letters straight ;-)! It's the hotter
plug, whichever, b/c the parts guy at Ferrari/Maserati of Seattle, our local
(and awesome) Alfa dealer, said Alfa originally used one of the two, must be
the HL, up to I think he said 1974, or maybe it was when L-Jet was
introduced, and then with the engine changes in 1990, they went back to the
hotter plug. Point being, he said the one I needed was the hotter of the
two, and I have no reason to doubt him. However, does my oh-so-descriptive
"dipped in cocoa powder" description indicate I need a hotter or colder
plug, or neither, or some other issue? Thanks, Dean and everyone, as always.


-----Original Message-----
From: Dean W. Cains [mailto:dwc@domain.elided]
Sent: Wednesday, June 16, 2004 9:03 PM
To: alfa@domain.elided
Cc: Jonathan Thames
Subject: Re: [alfa] spark plugs


Jonathan:

Of the Lodge plugs, isn't the 2HL a colder plug than the HL?  That may be 
what cured your detonation problem, but not because they're hotter.

Dean


At 11:33 PM 6/16/2004, you wrote:
>Date: Wed, 16 Jun 2004 17:42:11 -0700
>From: Jonathan Thames <jthames@domain.elided>
>Subject: [alfa] spark plugs
>
>         Joan, it sounds like we had the same experience this week. The
Bosch
>Platinum (not plus 4 or whatever) plugs in my 1992 Spider were a year old.
I
>put about 5000 mi on the Spider last year. I too do about a 4 mile round
>trip commute to downtown Seattle.
>         I just changed plugs on Monday due to what sounded like poor
>detonation under load. The Bosch plugs were dry, not oil fouled, but they
>were the cruddiest plugs I've ever seen (this is my first Alfa) They looked
>like the tips had been dipped in cocoa power. I'll be interested in what
the
>list says.
>         On several listers' advice, I switched to a hotter plug, the Lodge
>2HL. The poor detonation problems disappeared. Thanks, guys!
>
>Jonathan Thames
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