Noticed something odd about stock spark plugs
Thread Starter
|
Veteran
Joined: Oct 2006
Posts: 383
Likes: 1
From: Raleigh, NC
Noticed something odd about stock spark plugs
So my gas mileage has been on a steady decline the last 3k miles and I decided to change plugs @ 32k. There were a couple things I noticed and not sure if this was mentioned in other plug posts. One, my plugs were fouled like crazy and gap varied from .035-.045(stock says .040 but none were near...most at .045). The other thing I noticed, as I finished drivers side and took out the first on pass side I checked its gap and saw something unusual. sorry pic may be huge
The electrode on pass side is tiny.
SL380588.jpg
They're two diff plugs and diff part #'s. You can see on as some black rings on it too.
Anyways, I thought I'd post what I saw if no one else has done it. So far Autolite 3923 plugs have improved fuel economy and brought some life back into it. Never had any stumble issues so...nothing to fix there.
The electrode on pass side is tiny.
SL380588.jpg
They're two diff plugs and diff part #'s. You can see on as some black rings on it too.
Anyways, I thought I'd post what I saw if no one else has done it. So far Autolite 3923 plugs have improved fuel economy and brought some life back into it. Never had any stumble issues so...nothing to fix there.
Last edited by studlyblueiz; Sep 27, 2008 at 11:44 AM.
Professional
Joined: Nov 2007
Posts: 103
Likes: 0
From: Goose Creek, SC
ok so i changed the plugs out today...it took me a lil longer but i didnt want to break anything. Well i didnt find anything like you did but the plugs were a FUBAR when it came to the gaping.
Guest
Posts: n/a
yeah, my gaps were all over the map also... but gaps do change with wear... its not All quality control.
however, your different plug does point towards it.
Still not as bad as my uncles new Silverado... it has been at the dealer more nights than at his house. some electrical problem that causes his gauges to jump around and stall at lights... The deal doesnt know whats up with it... they have a tech driving it around now with a Tech-2 hooked into the diagnostics port... He is giving up if they cant fix it this time. He wants a new ram...
however, your different plug does point towards it.
Still not as bad as my uncles new Silverado... it has been at the dealer more nights than at his house. some electrical problem that causes his gauges to jump around and stall at lights... The deal doesnt know whats up with it... they have a tech driving it around now with a Tech-2 hooked into the diagnostics port... He is giving up if they cant fix it this time. He wants a new ram...
Rookie
Joined: Sep 2008
Posts: 62
Likes: 0
From: nw ar
stock plugs are usually like that. the reasoning is that one side fires different from the other. one side will fire from ground strap to electrode and the other side will fire from electrode to ground strap. it is a common thing on newer cars.
Trending Topics
Thread Starter
|
Veteran
Joined: Oct 2006
Posts: 383
Likes: 1
From: Raleigh, NC
Yeah...doesn't sound right to me either. All the coils seem to be exactly alike as well so.... Nor can I see or understand the benefit to different plugs.
Could be an HO thing...?...to have diff plugs that is...
Could be an HO thing...?...to have diff plugs that is...
Thread Starter
|
Veteran
Joined: Oct 2006
Posts: 383
Likes: 1
From: Raleigh, NC
ok. so i was just reading the link to the diff in HO to standard post and it actually shows the small electrode pic and calls it platinum tipped plugs...
idk, mine seems just fine with the autolites copper. still doesn't explain having two diff plugs
idk, mine seems just fine with the autolites copper. still doesn't explain having two diff plugs