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So 2 Thursdays ago I filled up before running down to NY. While running a few errands in NY I noticed that during normal or spirited acceleration my RPM seems to be cutting back throughout the entire range. If I gradually accelerate, it doesn't happen. At first, I thought if might have been some bad gas, but I'm going on my 2nd tank of gas now with no change. Also when it does this, if I continue to push it and don't cut back it gives a flashing CEL for about a minute. Tried scanner for a code, but found nothing. A friend of mine suggest getting some fuel line cleaner, but I'm skeptical on adding anything to my fuel. Too much horror stories. What do you guys think?

I had the same thing happen to me. But I noticed it on the interstate and went to pass someone and gave it half throttle and nothing happened. So I went back into my lane and gave it a little bit of gas and it was fine but like you, if I gave it alot of throttle it wouldnt go anywhere. I filled up and it went away after 20 minutes or so. I'm almost certain you've got a hold of some bad gas. Did you fill up at your normal gas station? It's possible you could have gotten two bad tanks. Def don't fill up the tank until you're certain you've gotten rid of the bad gas. Hope this helps Rich.

Jeremy

Thanks, it started after I filled up at my usual gas station so I filled up at another gas station for my 2nd fill up. I'm currently just below a half tank.

Definitely not bad gas.. Especially since you filled up at two different stations.  The likelihood of that is extremely rare.

CEL on bad gas is very unlikely; I had a tank of bad gas once and I never saw a CEL.

what was the last time you change your spark plugs? when the cels came up did you feel anything like a misfire could be bad gas i would of ran a can of seafoam also what type of fuel you running 87?

According to Honda, and a few other guys I talked to plugs on the J30s aren't due until about 105K with timing belt and all those other stuff... As I mentioned, it's a blinking CEL which only occurs when I push it. And yes, it kinda does feel like a misfire

Blinking cel = misfires, it would not hurt to pull the plugs and inspect them, but I also think you got bad gas, add some octane booster and run the tank completely out, then refil with premium.

Thanks Paul, I'll try n do this tomorrow or Saturday.

Oh, ignore 2nd part of my PM

I'd go ahead and change the plugs also its relatively inexpensive, and may correct your issue.

my ome honda plugs had to be change at 60 k due to similar conditions it turn out to be the plugs and one bad coil.

I hear you. I'm going to be checking the plugs tomorrow at work. Today after blinking the CEL stayed on. Scanner gave me, like Paul said, misfires in cylinders 1,2,4 & multiple random misfires codes. I picked up some some NOS octane boost to put in also. Now I just have to drive this shit out and hopefully be all set in a few days. Thanks guys, I'll keep you updated

Rich when you get the plugs and coils out take pics and post them please.......

Paul, are the J30 and K24 coils the same?  Rich, if they are the same and you need replacements, I have 4 for sale.

No, the coils are very different...

Yeah, I researched the details after the fact.  It's a shame though.  I don't really need a 2nd set of coil packs, so I was just hoping I could help Rich save some money.

Here are some quick pics I took today on my lunch break of the plugs. Sorry for the phone pics. Interestingly enough, they are Bosch Platinum and not Iridium as I've thought. I currently have over 53K on these Platinum plugs because I was going by Honda's recommendation that you only need replacements at 105K. Think I'll replace these over the weekend.

(http://i611.photobucket.com/albums/tt191/rich-01/Burnt%20Spark%20Plugs/CIMG0177.jpg)
(http://i611.photobucket.com/albums/tt191/rich-01/Burnt%20Spark%20Plugs/CIMG0178.jpg)
(http://i611.photobucket.com/albums/tt191/rich-01/Burnt%20Spark%20Plugs/CIMG0175.jpg)


Also added the NOS octane boost and have driven about 30miles with it so far.

Thanks for the look out Tim. I also researched the Top Tier gas stations, closest is a Shell about 30+ miles away so I'll see

Get those Bosch pieces of shit out of your engine now!!! Go to Advance autoparts and get a set of NGK Iridiums for $10 a plug..................................

 Plan on during that first thing in the morning before I head out to Z (CrackerTeg). As soon as I took them out and saw them, I said WTF. Cant be beat up on Bosch too much though, they are one of our customers at work.

Ther stuff just does not work in our cars, thier O2 sensors are very slow responding and can really screw up 6th gens and 7th gen I4s and I have never seen a good idle with thier plugs, sorry but thier shit don't work with Honda.....

Their wipers are pretty good and I like their relays.  But I agree with you about the NGK's for plugs.

Rich, you can swap them here if you want dude. If you don't get the plugs before heading my way, there's an autozone nearby.

Now Tim, you know me by now, all I care about is under the hood as long as there are windshield wipers that work i'm happy, but let me see a crappy set of plugs and i'll go balistic......

Just make sure you didn't put in NOS energy drink!! LOL

You guys should've seen the plugs he pulled today. They looked burnt like if he had been pinging. I honestly can't believe how bad those plugs looked.

they didn't look that bad from the pics he took, but they were with his cell...I have seen some nasty black crusty plugs before though...

Did the new plugs fix it? I saw the grey ash deposits in the pic which told me the were not burning all the fuel.

Initially, they seemed to take care of it but he'd be the one to say for sure since I don't know what it was like prior to the house painting. He also mentioned he had a little oil around two of the plugs which obviously says the valve cover seals is gone so that may also be the cause of his misfire.

Whoops, that wasnt what I was suppose to use?  J/K




Before Nos Octane Boost (Old Plugs)
(http://i611.photobucket.com/albums/tt191/rich-01/Burnt%20Spark%20Plugs/CIMG0177.jpg)
After Octane Boost (Old Plugs)
(http://i611.photobucket.com/albums/tt191/rich-01/Burnt%20Spark%20Plugs/CIMG0180.jpg)
I'm thinking it's the Octane Boost why the same plugs looked brown after 100 miles.


After replacing all 6 plugs with NGK Laser Iridium plugs, the car is running great again. Thanks to everyone for there input and help with this issue. We now have something else to add to the checklist when you buy a used car because you never know what the previous owners did until you check for yourself.


Yes, I do have to replace the valve cover seals ASAP because 2 of the plugs in the rear had a little oil around the base. It hasn't gotten to the point where the entire plug is covered in oil, which I know is a pain to get out because the plug tool slips off the plug. I've never don this on a J series before, so I'll let you guys know.