Remove the spark plug, install a spark tester into the plug cap ( these are a simple device normallt a dummy spark plug with a large gap ) earth the body of the spark tester well against the cylinder wall, make sure it is away from the open plug hole ,switch the ignition on, and crank the engine, you should see a spark at the tester, tester are readly available from dealers or on e bay.
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Benjamin, remove spark plug, attach plug wire onto plug, hold end of plug against cylinder head or a metal fastener that you know is going into engine for good ground. Make sure engine switch is in the on position, now pull engine over, observing the gap in plug for spark. If no spark get a new plug and try.
Check the attached links,instruction and guides, Good luck
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Some testing needs to be done to find the problem. May be spark related (ignition)-check if cylinder 3 has spark. You should see a blue, snapping spark when checking at the end of the spark plug wire-you can buy a cheap calibrated spark tester to check for spark. If spark is good, need to check that injector for #3 is pulsing, so the cylinder is getting gas. If you find it has spark and getting gas, have a compression test done to see if any mechanical problem with cylinder 3, something like a valve not seating can cause misfires.
what year and how many miles? check engine light on? problem could be as easy as a spark plug wire loose or broken. so first check for broken or loose spark plug wires check them close with your hand. u can also check at night time with the engine running, watching for an out of place spark. next i would check the spark plugs, remove and inspect for proper clearances. still no luck u can do a compression test on each cylinder. fuel delivery could also be a problem but a little more complicated to check. u could always put some fuel injector clean in ur fuel tank. ps if u take ur spark plugs out look at the spark plugs tips. compare the spark plugs with a spark plug condition chart. also always use anti seize compound on the threads of your spark plug before installation.
The first thing to check is the spark plug, is it clean and properly "Gapped" next is are we actually getting spark, does the spark plug actually "Spark". Check. Check Spark Plug lead., Check connections. Do we have Fuel, Check .and Is the fuel getting to the Carburettor? Check. Check the battery. alternator, generator, is providing power. Check the Mixture.
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