So check engine light came on and had codes ran it said 3rd cylinder misfire, ive already changed spark plugs. what else can i do and is it safe to drive till i can get it fixed?
I would check the plug wires and the coil pack if it has one and if it dont check the distributer cap and rotor bug.
If you need further help, reach me via phone at https://www.6ya.com/expert/joe_a79eed575e8dd8b3
You won't do any harm by driving it,just beware of the power loss....depending on whether petrol or diesel,if petrol yes could be ignition pack or bad plug lead.Not sure what the set up is but if you can get a spare plug and put in each lead in turn....rest on engine to earth it and crank over engine to check sparking.
also try cheking the injector nozzles for blockage.
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SOURCE: engine misfires badly after cruising a while at 3k revs,
Try to check the computer box and check if it is working and check the timing belt as well make sure it is properly tune up.
I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482
SOURCE: 2002 lincoln ls misfires in cylinder 1
if there was a coil circuit board on top of the engine make sure it is changed as well they cause problems
SOURCE: 91 LEGACY STARTED RUNNING ROUGH
The cylinders are numbered as on the spark pack you changed. You might have done better putting the seafoam in the tank as an injector cleaner. Not sure why you changed so many parts, you seem to know how to get the codes from test connector lead hookup and the blink pattern. You might also want to check the fuel rail pressure and the crank and cam angle sensors. Before replacing the injector, swap the #4 injector with the adjacent one and see it the code moves with the injector or stays put. If the code stays on #4, then check the injector wiring, if it moves clean or replace the injector.
SOURCE: Misfire on cylinder No. 3
try pulling the plug out and putting a very small dab of loctite thread locker on it and see if this stops the problem.
SOURCE: My 2002 forester started misfiring
Hello first of all
I would be glad to give you the best advice as a mechanic for 8 years 3 for bmw and 5 with ford motor company.
That being said your diagnosis is good and you followed the correct troubleshooting guide lines so good job with that. I am not super familiar with subaru but if you have one coil for all cylinders this is most likely not your problem but a good way to check your coil is take the spark plug out of head , then reconnect to spark plug wire lay spark plug near a metal surface and have someone try to start the car look at the color of spark if its blue spark your coil is not the issue if orange spark coil is faulty not firing a hot enough spark to fully ignite gas vapor. '
So with all that some newer cars do have coils with a coil pick up built in this may be faulty to if applicable to your car if so the only way to know is for you to change the coil.
However if the coil does not fix your issue i would strongly lean on a crankshaft position sensor and or a camshaft position sensor as they tell the ecu when to fire spark and in what order to fire it and are more commonly known to be faulty before all else.
The crankshaft position sensor is located either under the harmonic balancer pulley or facing the pully were the belt is not if under pulley you will need to rent from autozone a harmonic balancer pully puller its free just pay and get money back when you return.
camshaft position sensor is normally located were the distributor was located easy to locate if diffident though.
If your coil does not resolve the issue one of these two will.
Please if it helps 4 thumbs and testomnial would be greatful for thanks any ? just ask
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