since i am a newbie, this is a misfire right?

[johnshop]

so like i said, i was wondering, i am misfiring right? i am no expert and can't distinguish the sound.

http://www.youtube.com/watch?edit=vd&v=Oze4lRv39NM

what would be the best place to start? spark plugs? fuel injectors? coil packs?



pd: my accent is funny i know

[Ziggy1621]

Hard to hear anything wrong on the video, but if you suspect something, start with an ecu diag http://www.nicoclub.com/archives/nissan ... ostic.html

[nissanfreak12]

Easiest way to tell if it has a misfire is to do a balance power test, pull each coil connector off one at a time. If doing that changes the way the engine idles, lowers the idle, then that is where you misfire is at.

Another way to tell, if the car sounds like a Subaru and seems to really shake when you rev it up.

[t.mcginley.jr]

Easiest way to tell if it has a misfire is to do a balance power test, pull each coil connector off one at a time. If doing that changes the way the engine idles, lowers the idle, then that is where you misfire is at.

This.

Another way to tell, if the car sounds like a Subaru and seems to really shake when you rev it up.

LOL

[johnshop]

will do a balance power test then!

and i have 3 options right? spark plug, coil pack or injector right?


and rev it up while on park right? because if it is while running i can't tell because i have a drive shaft that is loose ( hopefully a one piece is on it's way soon) and car is shaky as it is

[johnshop]

sorry double post

[nissanfreak12]

will do a balance power test then!

and i have 3 options right? spark plug, coil pack or injector right?


and rev it up while on park right? because if it is while running i can't tell because i have a drive shaft that is loose ( hopefully a one piece is on it's way soon) and car is shaky as it is

Yes, you don't need to drive it to feel the difference, just don't rev it past 2500 rpms, for safety measure. But, you should notice right after pulling the coil pack plug if the idle changes. Also ohm test your injectors. If they are not between 10-14 ohms, they are bad.

Generally, yes, its mainly just the injector, plug, coil(in that order), that normal is the cause for a misfire. Misfires can also be vacuum leak, blown head gasket, bad ecu, bad wiring. Speaking of wiring, have you cleaned the connectors? If you pull off the plug and they have green crud on them, clean then with a small file, small screwdriver. Just scrape them so you have the copper look back in the connector.