Customer Reviews

E3 Spark Plugs E3.48 Automotive, Truck, Van and SUV OEM Replacement Spark Plug , Pack of 1

5 star:		(10)
4 star:		(5)
3 star:		(2)
2 star:		(3)
1 star:		(6)

 

 

I purchased these plugs to use in my 98 Saturn SL2. The first thing to do is inspect the plugs before installing them. The finished product isn't the best. The threads on one of the plugs had some burrs on it that concerned me to the point where I decided to dress it with a file first before installing it. If not, it could've cross threaded the head which would have been disastrous!!!

The plugs come already gapped and aren't adjustable. There were some variances in the gaps. Since the variations were so slight, I felt it would not be an issue and decided to install them as is.

I debated on whether or not to use anti seize and eventually decided against it. The website for the spark plug doesn't really recommend it. It says that the threads are nickel plated which help to resist seizing and galling. Even though the plugs are warrantied for 5 yrs./100k miles, I don't plan on leaving them in there that long.
If you do plan on leaving the plugs in for a long time, anti seize would probably be a good idea. Don't forget to adjust the torque values if you decide to use anti seize.

I just installed the plugs yesterday. The car seems to start up faster and has more pep when you hit the throttle. The old plugs that were removed were relatively new (5,000 miles on them) and in good condition so I don't think the improvements were a matter of worn plugs being replaced with new plugs. Even so, those things are hard to measure and open to the power of suggestion. The real test will be the miles per gallon, which I will be evaluating and reporting on after driving for approx. one month.
Stay tuned!!!

Update: It's one month and 1,200 miles later and the numbers are in.
First, some driving impressions. The car does run smoother and has more power. The car maintains 65 mph on the freeway with less effort than it used to take. Before, I could feel the engine "working" to maintain 65 mph. Now it cruises at 65 and I need to keep an eye on the speedometer.

Now the good stuff. My SL2 averaged 25.75 mpg versus 23.02 mpg for the month prior to installing the E3 spark plugs. I have to admit that because of the increased performance, my foot has been heavier on the gas pedal than normal so the mileage could possibly have been even a little better. All in all, I would say these spark plugs are a worth while purchase that will eventually pay for themselves.

I installed these in my 1999 Altima. I can't say I saw an improvement in fuel economy, but then again I drive mostly city, and Nissan's KA24DE 2.4L is just awful in the city. Definitely a little more power though. Tossed in a low restriction Spectre air-filter as well, and I'm satisfied. 100,000 mile warranty is reason enough to purchase a 6$ plug.

A few notes though -

1- Use anti-seize compound. Seriously, you'll never get them out after anything near 100K miles.
2- Don't even try to gap them. You're not supposed to, and you'll only damage them.
3- Torque to spec. You can't just bangs plugs in with a socket wrench.
4- Reboot your ECU to wipe the fuel maps. Disconnect your battery for 15 minutes so your engine computer recalibrates from baseline.
4a- WARNING - this can be a problem if you have one of those theft proof radios; they stop working if you disconnect the battery for an extended period. Mostly a problem on Volkswagon, and in cars with expensive aftermarket stereos.
5- Don't expect these plugs to resolve serious mechanical problems. They aren't magic. If you car/truck runs bad, it will continue to run bad.

Some cars (mostly Subaru) will throw "service engine" codes if you use any kind of non-standard plug. If you get a warning light, you'd better go back to one of the manufacturer recommended plugs.

I bought a set of eight plugs for my 2007 Dodge Ram 4.7L. Everything was fine for the first 6 hours then I had a misfire on one of the plugs. I did some troubleshooting, removed and reseated all the ignition coils and still couldn't get the misfire to go away. I took it to the nearest Car X for service thinking I screwed something up. After two hours on the diagnostic machine, it turned out to be a bad plug which cost me $70 to fix. This is the FIRST plug I ever had go bad after 6 hours. I am waiting for the other ones to go bad and cost me even more. Not very impressed so far.

Purchased @ lowe's plug would not fire after about a year took back to lowe's
Was told they didn't warranty had to go to Manufacturer, did that, was told had to send to them to get replacement, shipping would cost more than buying another plug lifetime warranty is a lie in this respect
As for as the plug its ok but no better than Std. Plug

These plugs worked great for the first 6 months! Their power were especially noticeable at low rpms, however come six months I started to get misfires and the engine started running ruffly. I pulled them out and found that the welds holding E clips were all starting to break and separate!

Bottom line: Great idea and technology, but needs better manufacturing.

I installed the E3 plugs in my Scion TC after reading their claims. Common sense dictates some truth about any spark plug. If you have worn out plugs and replace them with any decent plug which most are, you'll feel improvements in performance, smooth idle, acceleration and fuel economy. Of all the plugs I've tried, these were the worst thus far. After 40K miles, I felt sputtering and my check engine light came on. After checking the code, found out it was the plugs. I replaced them with NGK Iridium plugs and the problem resolved. I currently have over 307,000 miles on my vehicle so I've tried several brands and the E3 was the worst. Considering time and labor costs, these plugs are not worth the money.

I am not sure about improved efficiency (that is where engine management system's are involved), throttle response is defiantly improved.

I immediately noticed an increase in power after installing the E3's in my CR-V, I also got 2 MPG's more in city driving.
I was so impressed that I installed them in my 2004 Mazda 3 and I wasn't disappointed, results were the same.

I did install a complete new set of Bosch spark plugs and started my 2001 Pontiac Bonneville and just for fun I decided to try the E3 spark plugs the same day to see if there really are any improvements and there is in my case a definite change in idle and throttle response much more crisp feeling, as for mileage I'd have to say there really hasn't been any change. I also installed an E3 on my Suzuki Ltz 400 from A NGK and I couldn't notice a difference on that so much maybe it's because it's a one cylinder but I'll put some time on it and see where it gets me...

i put theses plug in my 90' geo tracker
i run this geo hard off road on 31" tires
trackers are in 5000 to 6000 rpm alot
i had them in for 2 years now
it runs better

DO NOT GAP THEM !
JUST PUT THEM IN
i keep hearing about people trying to gap them
read the package first