Question about Nissan Altima
Hey i have a 2000 nissan altima i took my car to the shop to get a tune up yasterday because i was having a misfire in cylindar 3 so the man started changin my spark plugs and my wires and my rotor cap well the 2nd and 3rd spark plug was tough to get out ba=ecasue the shop that changed them before didnt out no acease on them so the 3rd one broke off in thier and the 2 & 3 thread is messed up the man has a kit several of them to re thread it after he got the broken one out and now the pieace that comes in the kit to re thread it is not cathing so the spark plug can fit it but it is re threaded in really nervous
I really can't unravel the logic behind this. What do you want to know exactly?
Posted on Apr 19, 2014
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Posted on Jan 02, 2017
SOURCE: misfire after tune up
Since you have a misfire, the fuel in that cylinder isn't burning. Are you sure you have the firing order correct. Also try using one of your old plugs and wire for that cylinder and see if it works. If you only checked for spark at the wire, you might just have a faulty new plug- it happens.
Posted on Feb 26, 2009
SOURCE: 2000 astro with 4.3 new plugs
sounds like you may have a stuck closed poppet (fuel injector) inside your plenum. No fuel would cause misfire and a lean conditon. Also a vacuum leak in that cylinder would cause a misfire but yoyr spark plug would be fuel fouled.
Posted on Jul 26, 2010
SOURCE: 1999 ford escort I changed the
Remove the plugs from the head. Insert into the coil wires. Make sure
they are properly earthed on the engine. Crank the motor and check for
spark at each of the plugs.
Refer to the diagram. Cylinders are connected as shown on the diagram in blue. 1 goes to cylinder 1(sparkplug furthest from coil pack), 2 to 2, 3 to 3 and 4 to 4(closets to coil pack).
To test the coil pack use a digital volt meter. Measure resistance between coil towers for coil 1(marked 1 in red on diagram) Value should be between 12000 and 14500 ohm. Do the same for coil towers 2.
Measure resistance between I and C1. If the measurement is more than 5 ohm the coil is defective. Do the same for I to C2.
Measuring voltage at I(Ignition start/run) to ground should be 10V.
I is connected to the 15A engine fuse. The radio interference capacitor is connected between this line and earth at the coil. Disconnect it to see if it cures the problem.
C1 and C2 connect to the powertrain control module.
Bear in mind that aftermarket coil wires may cause problems with misfiring, so see if you cant find an OEM coil wire to replace the broken one before replacing anything else.
Posted on Nov 16, 2010
I investigated this for over an hour while tossing things around in my head and truly think that you need to have your O2 censor checked along with your converter. One probable cause to your misfire could very well stem from your catalytic converter due to an O2 faulty etc.etc. Why not try a smog shop before tearing that engine apart any further and replacing any unnecessary gaskets. Thats a tight engine in my opinion and unless you really mistreat it, I would bet on it at race day. Have you recently been in a fender bender? Let us know cause that might change my advice.
Posted on Nov 16, 2010
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