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Xtrm
08-16-2009, 11:17 AM
Im sure there is a thread already but i cannot seem to find it but what are the best spark plugs to run in the 3.4? I am having a misfiring problem from #4 and i have read on here that changing plugs helps.
jackal2000
08-16-2009, 11:34 AM
ac delco iridium.
Nate's Alero
08-16-2009, 11:36 AM
ac delco iridium.

or AC Delco Rapidfires, iridium FTMFW though
Redog
08-16-2009, 07:49 PM
I'm running rapid fires right now.

Still missing a bit, but I was told I new new wires, and my number 3 plug looking a bit white :(

probably going to new new coils soon
Cliff8928
08-17-2009, 01:31 AM
ac delco iridium.

FYI, They're #41-101
Kilroy
08-17-2009, 02:03 AM
What about these new "pulse plugs"?? http://www.pulstar.com/ Are they any good?? Do they perform the same?? Do they damage the vehicle in any way??
Kilroy
10-01-2009, 11:20 PM
Also, what about the E3 Diamond fire spark plugs???
http://www.blogcdn.com/green.autoblog.com/media/2007/10/e3-plug.jpg
lanette2000V6
10-02-2009, 02:20 AM
I have E3 plugs in my alero and they work great. no problems so far.
Fenderxcore
10-02-2009, 02:31 AM
What about these new "pulse plugs"?? http://www.pulstar.com/ Are they any good?? Do they perform the same?? Do they damage the vehicle in any way??

I would never pay the amount of money those plugs cost to even try it
jayson_waltz
10-02-2009, 06:36 PM
the pulstar are a total waste of money imo. the ac delco iridiums are your best bet, but whatever you do, NO BOSCH!!
[ion] C2
10-02-2009, 06:55 PM
Pulstar plugs are not worth the money, but they do work, a little.

Multiple electrode plugs are a waste, the spark will take the easiest route, it's not like you're going to be having multiple sparks (one to each tip) or anything.

NGK all the way.
-Alero-
10-02-2009, 10:22 PM
NGK and Ac-delco have a share with each other i believe....or they did at one point.

i remember i had some AC-delcos that had "NGK" engraved on them...... now the new ones say "parts from japan"
alerored04
10-02-2009, 11:15 PM
Why do we still post answers to these threads? I can't even count how many times this question has been asked. Use the damn search button.
jayson_waltz
10-03-2009, 01:44 AM
ngk pretty much builds the acd plugs. ngk is a japan made plug, so if it says that on the acd plug its probably made in a ngk factory.
JLw7123
10-03-2009, 09:12 AM
I had bosch but I think that Ac delco rapid fires are the best
jayson_waltz
10-03-2009, 02:44 PM
^bet that about after a month it started running like shit and no power with the bosch though. thats a common problem when they are put in lots of gm vehicles for some reason.
Cliff8928
10-04-2009, 02:47 PM
It has to do with the single platinum plug and a waste-spark ignition system. It wears the plugs unevenly. The bosch design tends to exaggerate the effect.
Vella's Alero
10-04-2009, 04:14 PM
what would some of these crappy symptoms be? I have bosch wires on my 3.4 and have gotten some stuttering starts.

Sorry to thread crap/jack but I never thought to chekc on this before.