Possible Misfire ?

[s13_whoa]

So today i did a tune up on my ka24de on my s13. I replaced the cap & rotor, spark plugs & spark plug wires. Everything was going fine until i got to the 4th spark plug. The previous owner or whoever changed it over torqued the hell out of it & it was stripped. It took me alot more turns to get it loose and off then all the other ones. It looked bad. So i sat there at my friends house with 4 people rushing me to get the job done so i just decided to replace all 4 spark plugs anyways. I added antiseize to each of em and tightened them pretty snug. Thhat last 4th plug i have to use a good amount of force/pressure to tighten it. Im sure the spark plug well thread is strippd. So i tighten it as much as i can. The spark plug wire doesnt sit all the way flush like the rest. I can start the car fine but with a veery little hesitation. The car vibrates more than it did before i can hella notice it while sit in the driver seat. My car idles fine rpm wise. It sounds like its knocking but im not 100% sure. And when i pull off the 4th plug wire it doesnt bog down as much if i were to take off just the 1st , 2nd or 3rd plug wire. I will upload a pic of the old spark plug and a video of how it runs tomorrow. What do you guys think and suggest i do? Sorry this post is hella long i needed to throughly explain if i did enough.

[s13_whoa]

Please any help would be appreciated. Just to give me some ideas.

[Dboyizmlg]

Sounds like a misfire on that #4.
If you pull that one out and it hardly makes a difference on idle performance, then you have a misfire on that cylinder.

It's a very easy way of finding out what cylinder is misfire.

[Dboyizmlg]

I'm 99.9% sure it's a mis fire.

Try to take the S.plug out (slowly), and work it back in slowly. Repeat a few times, some times you can fix the slightly stripped threads by doing this.

Be advised to take extra caution though. Wouldn't want you to break the S.plug in the cylinder. Good luck

[s13_whoa]

I'm 99.9% sure it's a mis fire.

Try to take the S.plug out (slowly), and work it back in slowly. Repeat a few times, some times you can fix the slightly stripped threads by doing this.

Be advised to take extra caution though. Wouldn't want you to break the S.plug in the cylinder. Good luck

How else could i fix the misfire? Cause i tried that technique where i take the Splug in and out slowly a ffew times but it didnt fix it. Would i have to rethread the S plug well thread and ill probably buy a new spark plug because im sure the new one i put in got strippd to

[NOLAGG]

But that would most likely require you to pull the head off . I personally would to not get any type of metal shavings in the cylinder but that's up to you or just get a head to swap over ? How many miles are on it ?

[bmxer882x]

A stripped head needs to come off and heli-coil it or get a new head if the above advice didn't help.

[s13_whoa]

But that would most likely require you to pull the head off . I personally would to not get any type of metal shavings in the cylinder but that's up to you or just get a head to swap over ? How many miles are on it ?

The dash says 260k but it got rebuilt and now its on 70k

[NOLAGG]

The dash says 260k but it got rebuilt and now its on 70k

Oh aright was just curious. , but like bmxer said you do infact need to pull the head and would prob be your best bet to just get a spare head and swap it over due to them being fairly cheap . That's what I would do and if you ever have any a a on boosting it would be a good opertunity to throw some arp studs in and new head gasket as well since it's off .

[s13_whoa]

Oh aright was just curious. , but like bmxer said you do infact need to pull the head and would prob be your best bet to just get a spare head and swap it over due to them being fairly cheap . That's what I would do and if you ever have any a a on boosting it would be a good opertunity to throw some arp studs in and new head gasket as well since it's off .

Well i never really worked on engines internally wise. So im not really sure on how to replace the head. What would i be looking for when im searching to buy, a cylinder head? & how hard is it to replace 1-10? & the time it usually would take?

[NOLAGG]

Part 1 - How to remove cylinder head from KA24DE 240sx S13 S14 - YouTube (http://youtu.be/inJK7vf5RBw)

There's a diy on a ka24de . Check it out and pay close attention to detail . It's all about torque spec . If you can consider yourself semi decent with tools you can do it. It's how I learned you just need to do it and with the internet and fsm at your hands it's very doable but watch the video and go out to your car and see if you understand what your looking at . Your simply taking a few major components off and putting them back the same way with timing in mind , which this video shows you and lastly torque specs out of the fsm( factory service manual).

[s13_whoa]

Part 1 - How to remove cylinder head from KA24DE 240sx S13 S14 - YouTube (http://youtu.be/inJK7vf5RBw)

There's a diy on a ka24de . Check it out and pay close attention to detail . It's all about torque spec . If you can consider yourself semi decent with tools you can do it. It's how I learned you just need to do it and with the internet and fsm at your hands it's very doable but watch the video and go out to your car and see if you understand what your looking at . Your simply taking a few major components off and putting them back the same way with timing in mind , which this video shows you and lastly torque specs out of the fsm( factory service manual).

Well man i wish i had a garage to be working in. All i have is a praking lot. Where can i buy the head?. Ill be looking to buy a "cylinder head" right?

[s13_whoa]

Oh aright was just curious. , but like bmxer said you do infact need to pull the head and would prob be your best bet to just get a spare head and swap it over due to them being fairly cheap . That's what I would do and if you ever have any a a on boosting it would be a good opertunity to throw some arp studs in and new head gasket as well since it's off .

Ive looked around on ebay, they're pretty expensive. Ranging from 400-700

[NOLAGG]

Ive looked around on ebay, they're pretty expensive. Ranging from 400-700


Me I would personally just look on the fs thread or a part out on Craigslist or somthing . lol you can get a whole motor for that price let alone a whole sr swap for just 1000 $ more lol

Worst comes to worst I don't know what your future plans or intensions for the car are but you can save money on the side and just drive it as is till it just craps out on you and get another Ka or sr swap

[s13_whoa]

Me I would personally just look on the fs thread or a part out on Craigslist or somthing . lol you can get a whole motor for that price let alone a whole sr swap for just 1000 $ more lol

Worst comes to worst I don't know what your future plans or intensions for the car are but you can save money on the side and just drive it as is till it just craps out on you and get another Ka or sr swap

I wanna do a sr swap later on but im working right now & this is my only car and i need something to drive. It would suck for this to just die out me. I wanna fix this shit as cheap as possible then save up for the sr swap. & i still wanna drift the ka and blow it before i move on to a sr

[NOLAGG]

I wanna do a sr swap later on but im working right now & this is my only car and i need something to drive. It would suck for this to just die out me. I wanna fix this shit as cheap as possible then save up for the sr swap. & i still wanna drift the ka and blow it before i move on to a sr

Well explain to me how and what exactly is happening when you drive it and hopefully you'll be able to get some decent time out of it

[s13_whoa]

Well explain to me how and what exactly is happening when you drive it and hopefully you'll be able to get some decent time out of it

Well currently i didnt wanna risk any more harm so i havent drove it yet. Ill let you know tomorrow

[bmxer882x]

Me I would personally just look on the fs thread or a part out on Craigslist or somthing . lol you can get a whole motor for that price let alone a whole sr swap for just 1000 $ more lol

Worst comes to worst I don't know what your future plans or intensions for the car are but you can save money on the side and just drive it as is till it just craps out on you and get another Ka or sr swap

Browse craigslist. People on here might charge a ton for shipping depending on where you live. Honestly if your not going to boost it I would heli-coil it. Kits around $20 at any auto parts store. Plus you'll need a headgasket and headbolts. Under a $150 job if you do the work. Take your time and follow the guide like suggested. A socket set 10mm-19mm, torque wrench, and a timing light is about all you need. Make sure to set the timing when your done or you could be very discouraged when it runs like poop.

Edit: Looked at oriellys website 33.99 for a fel-pro headgasket and 39.99 for the headbolts. So more like a $100 job.

[s13_whoa]

Browse craigslist. People on here might charge a ton for shipping depending on where you live. Honestly if your not going to boost it I would heli-coil it. Kits around $20 at any auto parts store. Plus you'll need a headgasket and headbolts. Under a $150 job if you do the work. Take your time and follow the guide like suggested. A socket set 10mm-19mm, torque wrench, and a timing light is about all you need. Make sure to set the timing when your done or you could be very discouraged when it runs like poop.

Edit: Looked at oriellys website 33.99 for a fel-pro headgasket and 39.99 for the headbolts. So more like a $100 job.

How long will the helicoil last? And how do i install it? Thanks for the recommendation. I think ill go with that since its alot cheaper and im assuming an easier job then replacing the head.

[bmxer882x]

Heli-coil will last as long as the head. You drill it out. tap it. Put a threaded collar in it. Put spark plug back in to new clean threads. Done. Reason you have to take head off is for drilling the hole out... don't want those nasty metal shavings in your combustion chamber.

Head still has to come off but you wont have to try to locate one, which it doesn't seem like you have many local 240's to find parts off of.

[s13_whoa]

Heli-coil will last as long as the head. You drill it out. tap it. Put a threaded collar in it. Put spark plug back in to new clean threads. Done. Reason you have to take head off is for drilling the hole out... don't want those nasty metal shavings in your combustion chamber.

Head still has to come off but you wont have to try to locate one, which it doesn't seem like you have many local 240's to find parts off of.

So what do you suggest i do. Currently im not driving the vehicle. I have all slark plugs in. Do you think the car is ok to drive? Would you drive the car if you were in my postion?

[bmxer882x]

Honestly im waiting to hear the video. I cant say. I would probably park it grab a buddy or 2 who are semi mechanically inclined and be ready to blow a day. But thats just me. I over think everything. Seems obvious you know somethings not right.

[s13_whoa]

Honestly im waiting to hear the video. I cant say. I would probably park it grab a buddy or 2 who are semi mechanically inclined and be ready to blow a day. But thats just me. I over think everything. Seems obvious you know somethings not right.

I pmed you. & the car seems to be different from before. Like it improved somehow it seems like.

[bmxer882x]

Ka24de - YouTube (http://www.youtube.com/watch?v=E0-WASCKv9k)
cold start
Ka24de part 2 - YouTube (http://www.youtube.com/watch?v=e714t8PDnC8)
warmed up

Heres the 2 videos he sent me, once its warmed up I don't hear anything. Seems to be firing on all cylinders. When you pull the plugs it makes a difference on all cylinders which if there was a miss it would be different than the other 3.
I'd say your fine. Open to hear other peoples opinions though. I've always had a sr so not familiar with how the ka sounds.

[s13_whoa]

Ka24de - YouTube (http://www.youtube.com/watch?v=E0-WASCKv9k)
cold start
Ka24de part 2 - YouTube (http://www.youtube.com/watch?v=e714t8PDnC8)
warmed up

Heres the 2 videos he sent me, once its warmed up I don't hear anything. Seems to be firing on all cylinders. When you pull the plugs it makes a difference on all cylinders which if there was a miss it would be different than the other 3.
I'd say your fine. Open to hear other peoples opinions though. I've always had a sr so not familiar with how the ka sounds.

Yeah i mean the other day when i pulled the plug it barely made a diifference. But today it actually showed something. Idk what happened but it yeah ii guess it started working

[bmxer882x]

Might have not had your plug all the way pushed on or something simple like that. Would have caused a loss in spark causing a miss. If its not missing anymore then your good.