I am going to change my OEM plugs and install NGK Iridium plugs this weekend. According to the website, it says not to gap the new plugs, however I'm worried that will cause decreased performance. Should I gap them, and if so, how much for a 2005 N/A 3.5L Altima with some minor mods?
2007-06-28 07:18:08 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Nissan
No don't gap but check the gap anyway
==== DETAIL ====
The new material plugs (platinum and Iridium material) are NOT made to be gapped by the user. They are incredibly hard metal and they may break instead of bending. BUT you have to check the gap anyway. Some times it is possible that a plug can be dropped and instead of the tip breaking the plug can bend slighting (but enough to affect the ignition).
If the plug gaps are wrong, then return them and get another one.
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Don't worry about "decrease" performance.
Good luck.
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2007-06-28 07:26:09 · answer #1 · answered by Lover not a Fighter 7 · 0⤊ 0⤋
Wow some one is going to change out perfectly good platunum spark plugs with Denso Iridium. Just wait until he finds out you have to remove the intake plenium to get to two of the rear spark plugs that will stop him. But if you insist you start by removing the wiper blades the black plastic grill inder the wipers and the black metal part from one side to the other. Now you will have room under next to the fire wall to remove the 10mm bolt that holds the powersteering hose. now remove all the solonids (3) on top of the manifold remove 4 long bolts two nuts and carefully lift the intake up to get to the back plugs.
2007-06-28 09:42:31 · answer #2 · answered by John Paul 7 · 0⤊ 0⤋
Gap the plugs according to Nissan's specifications. They may be pre-gapped correctly and they may not be. Professional mechanics don't leave that to the plug manufacturer.
Even if they have been gapped, that gap could be altered in transit or the plug may have been dropped. No one wants a burn piston on the count of trusting a spark plug right out of the box!
Gap is: 0.044
2007-06-28 07:28:27 · answer #3 · answered by gailforce_wind 6 · 0⤊ 1⤋
just get a tuneup every 30 or 40 K
if you can't do timing and gap of sparkplugs, then don't
oh yeah, if you have a very old VW, then try it anyway
it will run whatever you do, other cars won't though
2007-06-28 07:22:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋