Question about 1994 Nissan Altima

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Spark plug gap for 94 Nissan Altima

My wife told me her car was running bad so I pulled each spark plug wire till I found the problem. When I put the wire to ground I am getting spark, so I am pretty sure it is a bad or fouled plug. I need to know what to set the gap to when I go to install them.

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The correct spark plug gap is .044

Posted on Nov 24, 2008


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JD JS45 walk behind mover. Starts, runs fine for 5 minutes, then stalls, won't restart till i pull the spark plug and cool the motor, plug down. then same thing starts, runs for 5, stalls.

Probably either a fuel or a spark problem. You need to check for the presence of a good spark immediately the engine stops - by using a spark gap, a spare spark plug or a propriety spark indicator.

If the spark is found to be absent the fault is likely the ignition module but check all connections and the stop switch operation before replacing.

If the spark is present then the fault is probably fuel-related and is the sort of thing a tiny droplet of water in the carb could cause...

Jul 23, 2016 | Cars & Trucks

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Why does fuel appears on the spark plug?

No fire to that plug , could be coil wire or plug itself,,or Bad fuel injector, or computer that runs the fuel injectors,, or if is throttle body pinched wire under breather or bad control module,, and if its carbruated float stuck needs rebuilt,, check make sure your getting fire to the plug first,, pull the wire off and put a xtra plug in the wire,,, make sure its touching metal for ground, crank the car see if it sparks,,,if it does its more than likely it is somthing stated above

Sep 12, 2014 | Cars & Trucks

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Hello, I got the silent shaft, timed with the cam, crank and oil pump, thank you for the help with comments. now that it is runnin, it runs rougher then before i replaced the water pump and timing belts...

The only way to tell if you have a ring or valve problem is to do the compression test as it the best place to start . Once you have eliminated the compression from the equation then you can concentrate on why the cylinder is getting more fuel than the others. I would be checking for vacuum leaks for the rough running as an incorrect fuel / air ratio will cause missing. We cannot fix everything but we endeavour to point you in the right direction so that you can fix it.

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Missfire cyclinder 1

You are going to need to borrow some tools or go out and buy some to run some quick tests. If the misfire is in cylinder 1 ONLY, the easiest thing to do is to check spark, (spark plug tester).
  1. Put the spark tester into the plug wire and have someone crank it over. Make sure the plug tester is grounded to the block or some metal bracket, otherwise you could damage your coil. IF you don't have spark it could be due to a bad ignition coil. If you have spark at the wire and not the plug then you have a bad plug. IF you have spark coming from the coil wire but not the spark plug wire then you have a bad spark plug wire.
  2. If you see there is spark, the next step is to pull the plug out and test the plug itself. Plug the spark plug into the wire you just tested and pull the fuse (or relay) for the ignition or fuel pump. This will keep the car from starting, but will still allow you to see if the plug is firing.
  3. Also check the plug to see what condition it is in. Has the car been serviced recently, check all of the things that have had serviced.
  4. If you have spark the next thing is compression test. Screw in the compression tester to the spark plug hole in the head. Crank over the engine 3 times. Read the specification and look it up to see what the specification should be. Anything between 115-150 should be acceptable. IF you have any doubts test other cylinders to see what they are running.
  5. The last thing is to check for fuel, that is if you have found spark and compression. Locate the fuel injection port, on some VW models they are not used so consult a service guide if you're not sure.

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I have an 03 kia rio and am having power issues. The check engine light is on and the car simply fails to go when the gas is depressed. It acts like its starving for fuel and sounds like its only running...

I have the same issue with mine and found that if you gap the plugs to .026 -.028 instead of the factory settings of about .042 that the issue is 95% gone. I had changed the coil, plugs and wires before I found this remedy. The issues resurfaces now and then but not nearly as bad. Reset the ecm by pulling the 10 amp fuse in the under hood panel and it'll run better also. Stick with regular plugs, not platinum or others.

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pull out one of the spark plugs plug it in to plug wire run a jumper wire to the body or hook of the plug to ground the jumper must go to a suitable ground. pull out pcv hose to prevent car from starting have an assistant turn over the engine while you check for a strong blue or purple spark if the spark looks white or yellow there is a weak ignition condition and this must be adressed, bad ignition module bad cap and wires, etc. do the cap and rotor first if the spark is weak. If there is a strong spark sometimes holding the gas pedal to the floor while turning over the car for no more than 10 seconds starts stubborn motors do not let up on gas if car begins to start not until the motor starts to rev up.

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Cranks but won't start fuel pump not coming on

put a small amount of fuel in the intake near the throttle plate then crank and see if it fires, if it does then it's a fuel problem, if it does not fire then pull a plug wire and put a philips head screw driver into the plug wire hold it 1/4 inch away from a good ground then have someone crank it over, you should see spark and it should be blue, if not then you have a ignition problem a bad coil or cam sensor but need to know what you found out on the two tests I told you first to give you a direction to go.

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No spark out of the coil, but tested good out of car

replace te ignition module, that is the most common problem.

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Pull the spark plug wires out one by one and check for oil on wire. Sometimes the valve cover spark plug hole gaskets leak oil into the spark plug hole and causes a misfire. If oil found clean with brake or carb cleaner and blow out with compressed air. also when car runs bad listen under hood for snapping noise this would be spark escaping to ground somewere. In a dark garage you might be able to see the spark.

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