brix542 Posted October 4, 2011 Share Posted October 4, 2011 Ive got a slight miss/stumble when acclerating from a dead stop in my 94 se. I just changed the spark plugs which took away a major miss i had. 3 different types and only 3 plugs looked even half way decent. I just bought this truck and owner before me changed the wires so they are new. Any ideas on this slight miss i got? Any thoughts are welcome. Thank you. Link to comment Share on other sites More sharing options...
Tungsten Posted October 4, 2011 Share Posted October 4, 2011 Have you replaced the distributor cap and rotor? What brand of spark plugs are you using? Are the spark plugs in the correct heat range? Do you have any other codes stored in the ECU? Link to comment Share on other sites More sharing options...
brix542 Posted October 4, 2011 Author Share Posted October 4, 2011 They are autolites and advance auto had them listed for the pathfinder so im guessing they are the right heat range. Havnt checked the distrubtor yet or the codes. Link to comment Share on other sites More sharing options...
Tungsten Posted October 4, 2011 Share Posted October 4, 2011 Take that junk out of your engine and trade it for NGK V-power plugs. They are just as cheap but actually work well in these engines. Link to comment Share on other sites More sharing options...
brix542 Posted October 4, 2011 Author Share Posted October 4, 2011 May i ask what the problem is with autolites? i ran them in my 1994 xe for about a year till i got in the wreck. never had a problem. we run them in almost all of our vehicles. never had much of a problem with them. Link to comment Share on other sites More sharing options...
adamzan Posted October 4, 2011 Share Posted October 4, 2011 Autolites are cheap garbage plugs. Put the NGK ones in (factory plugs) and I am willing to bet it runs fine. Link to comment Share on other sites More sharing options...
brix542 Posted October 4, 2011 Author Share Posted October 4, 2011 ok. sorry i just dont see why autolites would make it do that. Didnt do it on my xe. just my own experience. but i could be wrong Link to comment Share on other sites More sharing options...
Tungsten Posted October 5, 2011 Share Posted October 5, 2011 Who is the manufacturer of the wires? Nissan engines work well with either MSD, NGK, or Yazaki wires. No idea on other brands... Have you checked the gap on those plugs by any chance? Link to comment Share on other sites More sharing options...
ejin4499 Posted October 5, 2011 Share Posted October 5, 2011 Ive got a slight miss/stumble when acclerating from a dead stop in my 94 se. I just changed the spark plugs which took away a major miss i had. 3 different types and only 3 plugs looked even half way decent. I just bought this truck and owner before me changed the wires so they are new. Any ideas on this slight miss i got? Any thoughts are welcome. Thank you. might also look for a vacuum leak. Link to comment Share on other sites More sharing options...
brix542 Posted October 5, 2011 Author Share Posted October 5, 2011 Gap was checked and corrected to .032-.035 as specified in the owners manual when i put the plugs in. not sure on brand of wires. il check tomorrow. i do know they are blue. As to the vacuum leak i found one dry rotted hose and replaced it when i did the plugs. it was the one that runs from below to over top of plug 6 in the very back. Thanks to all. it isnt anything that affect the dd ability of the truck just wanna tune it in perfect or as close as possible. Link to comment Share on other sites More sharing options...
Tungsten Posted October 5, 2011 Share Posted October 5, 2011 Speaking of tuning... What timing are you running and how do you know it is where it should be? The recommended spec is at 15 BTDC. Link to comment Share on other sites More sharing options...
brix542 Posted October 5, 2011 Author Share Posted October 5, 2011 Havnt came close to looking at the timing. Ive owned the truck about a month and a half and have been driving it a lil over 2 weeks is all. Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 5, 2011 Share Posted October 5, 2011 Blue is good, they are probably NGK wires. Only other blue wires I have seen were Taylor wires that my local Napa used to sell, those were good wires as well. Link to comment Share on other sites More sharing options...
brix542 Posted October 5, 2011 Author Share Posted October 5, 2011 Probably are NGK wires. the prevoius owners said they did a "tune up" a few months ago and the 3 plugs that were actually changed and were halfway decent were NGK brand. But thats not saying much. With the other 3 plugs being 2 autolites and 1 boosch im not sure what exactly their tuneup consisted of. Basically they changed what plugs they could do easy, changed wires, and cranked the idle up to compensate for the miss. No tach but when we changed all the plugs she sounds to be idling in park at around 2500 rmp. Link to comment Share on other sites More sharing options...
lint Posted October 5, 2011 Share Posted October 5, 2011 So, the manual says to use NGK BKR6EY. Are those the NGK plugs to use, or can he get a little more fancy? http://www.ngk.com/results_app.asp?AAIA=1211971 Link to comment Share on other sites More sharing options...
adamzan Posted October 5, 2011 Share Posted October 5, 2011 I had the higher end NGK's in my pathy and when I changed them to the factory V-power ones because they were on sale I noticed absolutely no difference...Other than the fact that the higher end ones may last longer. But I'd go with what the manual says. Link to comment Share on other sites More sharing options...
Kingman Posted October 5, 2011 Share Posted October 5, 2011 Autolites are garbage. Personally I'm at 3 of those suckers that were bad out of the box or failed shortly after installing. The porcelain is pretty weak on them and they have a tendency to crack apart. Does your issue vary with how much throttle you give it? Maybe try cleaning the MAF and wiring. Link to comment Share on other sites More sharing options...
brix542 Posted October 5, 2011 Author Share Posted October 5, 2011 The only time it misses is if i come to a dead stop like at a stop sign. then when i take off it mises/stumbles 1-4 times and then takes off and runs fine. i have noticed that it will only do it the first time you completely stop enless youve gone 5+ miles. Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 5, 2011 Share Posted October 5, 2011 So, the manual says to use NGK BKR6EY. Are those the NGK plugs to use, or can he get a little more fancy? http://www.ngk.com/results_app.asp?AAIA=1211971 I would never use a Iridium/Platinum/24K Gold Plated/Moon Rock (you get the idea) in any vehicle unless the owners manual says. Link to comment Share on other sites More sharing options...
sewebster Posted October 5, 2011 Share Posted October 5, 2011 (edited) I have some kind of fancier NGKs in my truck. I think they are g-power... they seem to work. Maybe my occasional miss at idle is due to them, but I doubt it. I will probably just try to buy the manual spec ones next time, but mostly because they are cheaper. My plugs were supposed to be gapped correctly when I bought them, but they weren't. I found that fairly disappointing. Seen a lot of bad QC in auto parts recently... Edited October 5, 2011 by sewebster Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 5, 2011 Share Posted October 5, 2011 I have some kind of fancier NGKs in my truck. I think they are g-power... they seem to work. Maybe my occasional miss at idle is due to them, but I doubt it. I will probably just try to buy the manual spec ones next time, but mostly because they are cheaper. My plugs were supposed to be gapped correctly when I bought them, but they weren't. I found that fairly disappointing. Seen a lot of bad QC in auto parts recently... I would be ok with the copper cores or the G-powers. Just the iridium/platinum I would stay away from. Every time I buy a set of NGK's I ask the gap to double check and they tell me they are already gapped. They never are. Link to comment Share on other sites More sharing options...
lint Posted October 5, 2011 Share Posted October 5, 2011 (edited) My plugs were supposed to be gapped correctly when I bought them, but they weren't. The specs on the NGK page show that the plugs out of the box are gapped @ 0.035". This is at the upper threshold of wear tolerance. Gapping them to the lower threshold would mean that as the centre electrode wears away, the gap remains in tolerance. This is why one should ALWAYS gap new plugs. Edited October 5, 2011 by lint Link to comment Share on other sites More sharing options...
brix542 Posted October 6, 2011 Author Share Posted October 6, 2011 I always gap any plugs i help put in a vehicle. Dont trust any manufracture to gap them properly. I put them slightly below .035. probably around .033. Link to comment Share on other sites More sharing options...
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