mis firing?
#1
mis firing?
ok so yesterday i was just driving. then at a stoplight, my engine rpm's dropped all of a sudden and it started making a gurgling noise. and when i started to drive away it sounded like a wrx wit exhaust! and it smelled bad like gas. so i'm guessing spark plugs? my fren said it might be the wires. but i changed both back in like march. anyother thing it could be?
Peace out
Peace out
#2
Maintenance Moderator
iTrader: (2)
how much power does the car have??? I had a similar sound when one coil pack died... only running on 4 cylinders, it didn't have hardly any power and ran/sounded like crap...
I would highly doubt it was the wires and plugs if both are less than a year old...
one thing about coils - it's easy to test if it is still doing it... simply unplug one coil at a time and watch for spark coming out of both of them... (they will ground to the block and the spark will jump to ground), alternatively, if you unplug one and the car won't start at all, then it is definitely the other coil that is bad... if you unplug one and it still acts the exact same, then it is most likely that coil that is bad...
could also be distributor and rotor (our cars have two of each) - sometimes the rotor will wear out and not transfer the spark, or the gap will be too high for it to transfer all of the spark...
I would highly doubt it was the wires and plugs if both are less than a year old...
one thing about coils - it's easy to test if it is still doing it... simply unplug one coil at a time and watch for spark coming out of both of them... (they will ground to the block and the spark will jump to ground), alternatively, if you unplug one and the car won't start at all, then it is definitely the other coil that is bad... if you unplug one and it still acts the exact same, then it is most likely that coil that is bad...
could also be distributor and rotor (our cars have two of each) - sometimes the rotor will wear out and not transfer the spark, or the gap will be too high for it to transfer all of the spark...
#3
which part is the coil? sorry i'm a noob at these things. used to just doing simple things. it's the sprak plug, spark plug wire, then it goes into the thing at the front where 4 of them are connected. is that the coil? or could u post a pic where it is? and how much does it cost to get a new one? sorry for my questions... >< but thanks alot for your help!
Peace out
Peace out
#4
Maintenance Moderator
iTrader: (2)
which part is the coil? sorry i'm a noob at these things. used to just doing simple things. it's the sprak plug, spark plug wire, then it goes into the thing at the front where 4 of them are connected. is that the coil? or could u post a pic where it is? and how much does it cost to get a new one? sorry for my questions... >< but thanks alot for your help!
Peace out
Peace out
#6
ok i unplug both coils seperatly and the car still runs when i unplug either side....is there anyway to check the distrubutor and rotor? but when i unlug'ed the coil it ran liek SHIET. liek u said, my car isn't running that bad. but it still feels like one cylinder isn't firing or sumtin...
i miss my car so much...
Peace out
i miss my car so much...
Peace out
Last edited by breakb; 02-03-09 at 05:47 PM.
#7
ok so i replaced the distributor cap and the rotor and the coil wire. coil wire went bad, but i replaced the rotor and distributor cap and it still runs like before. like a tiny misfire. my mechanic said the next thing is to just go to a place and get a diagnotic... he said can run it though and see if it resets or sumtin, but still runs the same as before...anymore idea's guys?
peace out
peace out
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#8
Maintenance Moderator
iTrader: (2)
not much of a mechanic if he can't troubleshoot it huh... sounds more like a part installer... a true mechanic should be able to test and see where the miss is... it could also be an injector, bad plug, a wire that is loose that is letting the spark jump to ground... things like this take diagnostic experience and an eye for detail...
#9
my fren also told me to unplug the injector wire. but...i have no clue where that is...and he said try check the ignitor chip? and also. if i just unplug each spark plug wire at a time could i check it that way? like if it runs the same when i unplug one then replace it right? or do i have to unplug it while it is on? checked all the wire's it seems all the wire's are fine.
thanks for all the help mitsuguy. i love my car. =(
Peace out
thanks for all the help mitsuguy. i love my car. =(
Peace out
#11
well guys...it ended up being a spark plug wire. no clue why cuz it's only a year old. took um off one by one, and when i took that one off it ran better wit out it. change'd it and took it up to 120. feels good as before. yay!!! thanks guys for all your help.
peace out
peace out
#14
Maintenance Moderator
iTrader: (2)
definitely can get it in one time use packets for like $.69 or whatever at most auto parts stores...
here's a quick how to... http://www.techguys.ca/howto/spark_plugs.html
here's a quick how to... http://www.techguys.ca/howto/spark_plugs.html
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