thirdgen

iTrader: (26)

So my car started to miss the other day and I yanked my plugs which have 10,000 miles on them. They are krusty white and look like there is build up all over them. I am running NGK-ZFR6-11 gapped at .030. My plug wires have 30,000 miles on them, maybe more, so I figure I'd change them too. I want a set Magnecor's, but for $50 cheaper I can get lifetime warranty wire at Advance Auto. Has anyone every run wires like these? I just figure $30 for a set of wires that I can replace every month is better than $80 for a set that has no warranty.

kotomile

iTrader: (24)

The last set of wires I got from Advance Auto came apart the first time I went to yank one of the wires out.. never again. Not worth the hassle for $30 IMO.

Edit - just to clarify, I speak of the grey wire set, not the NGK wires. Never a problem with the NGKs.

AlexO35

iTrader: (7)

NGKs were about that online last I bought a set.
--Alex

AlexO35

iTrader: (7)

Well $40....

eBay Motors: NGK Spark Plug Wires Mazda Miata 1990-2000 Wire ZE21 (item 170295550947 end time Mar-19-09 23:33:59 PDT)

--Alex

Atlanta93LE

iTrader: (5)

I picked up NGK blue wires from Advance Auto Parts. Was like $35-$40, IIRC.

the_man

I've run both generic wires (CarQuest house brand) and NGKs. When new, I noticed no difference, although at 25,000 miles or so the CarQuests were shot. Haven't had the opportunity to run the NGKs that long, though, so I don't know what they'll wind up doing. No sense really in buying them on ebay, though, when Advance Auto or any other store will either have them in stock (if you're lucky) or next-day (normally) for about the same price when shipping is considered.

cjernigan

iTrader: (13)

NGK blues are cheap and work great, get some.

hustler

iTrader: (6)

cops > *.plugwires

Braineack

iTrader: (62)

plug wires are for the weak.

AlexO35

iTrader: (7)

And here I thought that with the new pull up resistors on the MS that COPs weren't really needed.
--Alex

thirdgen

iTrader: (26)

Picked up a $27 set today of the Advance Auto brand, just to single out the issue being the plug wires...and it does the same thing. Also I did put new plugs in it. I think there is a loose connection between the MS and the coils, that is my only guess. I took the car out today from my house to the gas station 2 miles away, and then back...it ran fine. Then took it to go to dinner, and it started doing it's missing, and spitting and sputtering again. If I am cruising along pulling like 10 inHg, and it runs fine, the AFR's are like 14.7. If it does it's sputtering ****, the AFR's are rich, like 11.5 or 12:1. I am thinking, there is a misfire, not all the fuel gets burnt, which then flows into the exhaust stream and the O2 reads the unburnt fuel. The wires that go from MS to my harness are all soldered except for the coil wires, which are on plug in connectors. Perhaps there is a shitty connection here? Tomorrow morning I am gonna solder these instead of having it plugged together, and then at least it will single out that problem.

sixshooter

iTrader: (12)

Injector cleaning lately? Are any of the plugs getting sooty? UEGO reads the average of the four cylinders. Maybe your problem is only in one.

NA6C-Guy

iTrader: (1)

I would have just gone with the NGK's. Sure its cheaper for the store brand junk, and they can be replaced, but NGK's should last at least a few years. Why cheap out on something like that. I've seen quite a few cars diagnosed incorrectly with ignition system issues where it ended up being the cheap shitty plug wires. I also agree COP's>Plug Wires. As soon as I can afford to do so, it shall be. Then my $100 RB Ultra wires will be useless...

gompers

iTrader: (4)

Vacuum leak?

j_man

It is called O2 (Oxygen) sensor and not fuel sensor for a reason. If there is a misfire and no burning, the sensor shows a lean condition and not rich.

thirdgen

iTrader: (26)

The O2 sensor shows parts air per fuel...so if there is unburnt fuel in the exhaust stream, it should calculate that there is less parts air per fuel, therefore producing a lower number meaning it is rich.

thirdgen

iTrader: (26)

My injectors just came back last week from the cleaning and flow testing. The plugs were sooty, but I put new plugs in it. Someone else said a vacuum leak, I'm not sure how a vacuum leak would cause a misfire...

j_man

WTF are you talking about? If the engine is misfiring the O2 sensor will show LEAN condition, not rich. You will see LEAN indication on the gauge. You have all that unburnt oxygen...

thirdgen

iTrader: (26)

Ad this one to another dumbassed mistake section. I did a datalog and let VE analyzer make changes to my fuel VE Table. There were sections that we so far apart, this is where the problem was. I uploaded my original .msq to the MS and then did a datalog, then changed my VE table by hand, and it ran better with no sputtering. Actually it runs really good. **** that VE analyzer.