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Misfire Issue
#1
Posted 01 October 2010 - 07:57 AM
I was driving my car on the highway today and i noticed I didn't have much power and couldn't get up hills at the speed limit. After a little bit more driving the car started to sound like a Subaru especially when accelerating. When i checked it out i pulled all of my spark plugs out thinking something might be up there and i noticed the thread on the 3rd plug had oil on it. I then cleaned up all the plugs and re adjusted the clearance on the plugs, this did not make any difference.
I then started the car and pulled off each spark plug cable separately and noticed that when i pulled the cable of the third plug it didn't drop the revs at all, so Ive come to the conclusion that I'm running on cylinders 1,2 and 4.
Does anyone have ideas on what has gone wrong.
I'm not blowing any smoke and it can still be driven just with a lot less power.
Cheers for your help
#2
Posted 01 October 2010 - 09:21 AM
Hey guys
I was driving my car on the highway today and i noticed I didn't have much power and couldn't get up hills at the speed limit. After a little bit more driving the car started to sound like a Subaru especially when accelerating. When i checked it out i pulled all of my spark plugs out thinking something might be up there and i noticed the thread on the 3rd plug had oil on it. I then cleaned up all the plugs and re adjusted the clearance on the plugs, this did not make any difference.
I then started the car and pulled off each spark plug cable separately and noticed that when i pulled the cable of the third plug it didn't drop the revs at all, so Ive come to the conclusion that I'm running on cylinders 1,2 and 4.
Does anyone have ideas on what has gone wrong.
I'm not blowing any smoke and it can still be driven just with a lot less power.
Cheers for your help
my cc lancer 1.8l done the ssame sought of thing
it ended up being the dizzy on it cant be sure if thats the problen your having
#3
Posted 01 October 2010 - 10:23 AM
BRIAN
Black evo 1 full road rego and done properly/legally
I have heaps of parts...but never the one I need.
#4
Posted 01 October 2010 - 09:32 PM
time for a compression test mate. if that pot is low, it is time for a rebuild
OK I'll have to get it checked out then, cheers mate.
#5
Posted 01 October 2010 - 11:22 PM
OK I'll have to get it checked out then, cheers mate.
just try re-read your 1st post. try brand new plugs and see if there is a difference. or swap the plug from cylinder three to a different pot and see if that cylinder also dies.
also check the injector plug to see it is on and the injector is working
BRIAN
Black evo 1 full road rego and done properly/legally
I have heaps of parts...but never the one I need.
#6
Posted 03 October 2010 - 04:02 AM
I think I will go and get the compression tested in the next couple of days unless someone has any other ideas.
#7
Posted 03 October 2010 - 11:52 AM
#8
Posted 03 October 2010 - 12:06 PM
On a 4g63 when you get up around 20psi you need to gap them slightly closer than how the plugs come. A lot of guys on the link forums are gaping to 0.7mm, i had to do this to as it would misfire when gaped to 0.8mm
I'd imagine a 4G93 would be in a similar boat.
Other wise i think there's a way you can check the resistance on your ignition coils
Edited by milkandoj, 03 October 2010 - 12:14 PM.
#9
Posted 03 October 2010 - 10:12 PM
hey does it do it when it cold? if it only does it when its hot i would say its one of the coils. mine done the same thing on a really hot day and hasn't done it since. i played around with in and noticed one of the coils didn't have as much spark as the other.
No it does it all the time even once it has warmed up
How much boost or power are you making?
On a 4g63 when you get up around 20psi you need to gap them slightly closer than how the plugs come. A lot of guys on the link forums are gaping to 0.7mm, i had to do this to as it would misfire when gaped to 0.8mm
I'd imagine a 4G93 would be in a similar boat.
Other wise i think there's a way you can check the resistance on your ignition coils
I'm not running any boost, sorry didn't mention its a CB GSR Naturally Aspirated.
Hopefully I can get it to the mechanic today and see what they say.
#10
Posted 04 October 2010 - 11:36 AM
take one plug out and try each socket, u'll know when a cylinder is off when it starts anyway.
could be leads too, i've had drama with those or a good clean of the spark plugs. I just had that issue on the bike just today it was running half power of 600cc bike, clean, filed and regap and fixed!
i know my 4g61 one of the cylinders is a lil lower then the others by 3-5 psi i think. still knows smooth but slow
1991 CB Lancer GSR. Fully restored. Forged vr4 motor. FP Manifold. 20g. 38mm Tial wastegate. 3" Punishment Racing dumpipe. FIC 950cc. Ecmlink. Koni inserts coilovers. Evo 4 brake setup. Sprint 15' Harts racing. 280 cams. 4g61 inlet. Evo 8 Throttle body.
1995 SSG RVR
2014 ASX Diesel 4WD
#11
Posted 05 October 2010 - 04:43 AM
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