People complain about everything, this was very informative and if you pay attention he explained everything you need to know about tuning the trailblazer up. 👍 you're good in book man, thanks for the vid.
Super helpful. I pulled a P0304 ( misfire) on the #4 cylinder so will change the plugs and if that doesn't do the job I will replace the coil(s). Now I know how. Thanks.
If you do get new coils be sure to check the pins on the connector . I bought a set on Amazon and found a few pins bent . Easily straightened them and have worked like a charm.
@@z06badboy18 I ended up replacing both right off the bat because why not?I was in there and It wasn't that expensive. Things ran better overall but I think that is the plug that had oil in the hole as well. Even though that was all replaced I still have a check engine light on that I have somewhat ignored since and I have a suspicion it is in that plug but I believe that means I have to change the head gasket which may be for another day. Scotty Kilmer says it isn't that hard to do ...I 've never done it. It seems to be doing fairly well since then.
No you can never assume gap is good out of the box for any spark plug you can gap . The plugs used on this were iridium plugs that you are not supposed to adjust gap on so I didn’t bother even checking . If these were copper or other types that have a gap spec I would trust but verify with my feeler gauges .
Thanks, check engine light started blinking day before Thanksgiving so after engine cools I'm going to change that plug and coil and see if it fixes it.
It’s a great place to start . Check the pin connectors on the new coils I had a few that were bent and I had to straighten them out . Better to check them before installing. Have a great thanksgiving !
Hey, love the video. You helped me a lot. I do have one question, are the spark plus you purchased pre gapped? I also bought AC Delco, but the guy at the counter said I needed to gap them to .043. Any clarity would help!
These were direct fit and should be pre gapped . I spot check them and mine were in spec . I don’t remember if it was the .043 or not I just went off the service information . It’s always good to just check but I don’t have to adjust gap on mine and the truck is still running strong with another thousand miles on it.
I just got a misfire on cylinder 3 yesterday. Last November I changed coils on 1 and 2, due to a different code coming up. My question is, should I change all plugs and put on 4 new coils? Keep in mind I’ll be doing this either outside or in an unheated garage and it’s -20 and snow in Calgary this week. I’d rather just do the 1 until it’s nice and I can do all 6
Since it’s so easy to access the coils the choice is yours . It really depends on your finances . I have had some friends prefer to just replace the bad one and some replace them all . The thing about some new parts is you never know if they would outlast the oem ones they replaced that weren’t throwing codes. Now , if these requires pulling say an intake manifold like v6 vs the straight 6 I would say save the future labor and do them all . The trailblazer in this video is still running strong. We did all plugs and coils in one shot .
Ah I missed the point about weather . Right now with this weather I would say swapped the known bad and hold off on the others . Unless they are misfiring there’s no reason to swap them .
Changed the plug. Still misfiring. I’m going to swap coils today and see if the misfire moves. Any tips to getting the clip off the coils? Damn mine are on good. After that, I really don’t know what to check next.
@@ryanpetkau3398 I always try with little pick tools. Sometimes the clips breaking is inevitable. I try with the pick tool to release the clip . Often I’ll try pushing the plug on further then pull back repeatedly and they usually come off . It’s more than likely a coil but moving one and seeing if a misfire moves is the best way to track . I suggest you use a sharpie before removing the suspected bad one and mark it in a way you’ll know it’s the suspect bad.
That sounds like a bad day. depending on how much meat is left on the bolt you could try the vice grip method, or if you can get a drill try to drill with reverse bits to try to get it out. Since the valve cover removal/replacement on this is such an intense job you will want to find any way you can to ensure the coil stays in place. I dont want to sound hacky but depending on the options you have a jb weld of the remaining bolt or a zip tie in a strategic place may be the only cheap option if you cant get the broken piece out.
Hey Greg thanks for the feedback. Didn't have a camera man and tried to do a one show. I did say in the video there is a clamp on both sides but I should have panned over and showed it. Ill try to be a bit more descriptive in the future. Thanks again.
If I remember correct a few practically fell out but some were very tight. Much tighter than I put them back in. For something as delicate as spark plugs I try to do torque spec and oem plugs because it’s so cheap to do compared to store brand irts usually only a few dollars
People complain about everything, this was very informative and if you pay attention he explained everything you need to know about tuning the trailblazer up. 👍 you're good in book man, thanks for the vid.
Thanks jay ! Glad this was helpful.
The best type of spark plug Chevrolet Trailblazer 2004 model thank you
Thanks for the comment hope it was helpful.
thanks man my mechanic tried to charge me book time so i left him a snarky review on angies list that will teach him to rip people off
Yeah man glad it helps a bit . It’s a real simple job and I’m sure shop time they charge 2 hours minimum .
What's book time on this?
@@All2Skitzd I would guess a shop they would do a 2 hour book time . How long it took me was about 30-45 minutes leisurely .
Super helpful. I pulled a P0304 ( misfire) on the #4 cylinder so will change the plugs and if that doesn't do the job I will replace the coil(s). Now I know how. Thanks.
If you do get new coils be sure to check the pins on the connector . I bought a set on Amazon and found a few pins bent . Easily straightened them and have worked like a charm.
Did the misfire went away after the spark plugs or the coils?
@@z06badboy18 I ended up replacing both right off the bat because why not?I was in there and It wasn't that expensive. Things ran better overall but I think that is the plug that had oil in the hole as well. Even though that was all replaced I still have a check engine light on that I have somewhat ignored since and I have a suspicion it is in that plug but I believe that means I have to change the head gasket which may be for another day. Scotty Kilmer says it isn't that hard to do ...I 've never done it. It seems to be doing fairly well since then.
Might just have to change the valve cover gasket @@JohnB-kv4gf
Your video was very helpful.
Glad it was helpful! I wish I moved the camera a bit more to see better but on hot days working alone sometimes that is difficult.
Great work!!! Thanks for the informative video!!
Glad it was helpful! I wish I filmed a bit better but was a one man show that day.
Can you assume the gap on the spark plug is good? I remember mechanics in the 1970's would check each one.
No you can never assume gap is good out of the box for any spark plug you can gap . The plugs used on this were iridium plugs that you are not supposed to adjust gap on so I didn’t bother even checking . If these were copper or other types that have a gap spec I would trust but verify with my feeler gauges .
Thanks, check engine light started blinking day before Thanksgiving so after engine cools I'm going to change that plug and coil and see if it fixes it.
It’s a great place to start . Check the pin connectors on the new coils I had a few that were bent and I had to straighten them out . Better to check them before installing. Have a great thanksgiving !
@@JustFixinGarage ok on the pin issue
Hey, love the video. You helped me a lot. I do have one question, are the spark plus you purchased pre gapped? I also bought AC Delco, but the guy at the counter said I needed to gap them to .043. Any clarity would help!
These were direct fit and should be pre gapped . I spot check them and mine were in spec . I don’t remember if it was the .043 or not I just went off the service information . It’s always good to just check but I don’t have to adjust gap on mine and the truck is still running strong with another thousand miles on it.
@@JustFixinGarage thank you!
I just got a misfire on cylinder 3 yesterday.
Last November I changed coils on 1 and 2, due to a different code coming up.
My question is, should I change all plugs and put on 4 new coils?
Keep in mind I’ll be doing this either outside or in an unheated garage and it’s -20 and snow in Calgary this week.
I’d rather just do the 1 until it’s nice and I can do all 6
Since it’s so easy to access the coils the choice is yours . It really depends on your finances . I have had some friends prefer to just replace the bad one and some replace them all . The thing about some new parts is you never know if they would outlast the oem ones they replaced that weren’t throwing codes. Now , if these requires pulling say an intake manifold like v6 vs the straight 6 I would say save the future labor and do them all . The trailblazer in this video is still running strong. We did all plugs and coils in one shot .
Ah I missed the point about weather . Right now with this weather I would say swapped the known bad and hold off on the others . Unless they are misfiring there’s no reason to swap them .
Changed the plug.
Still misfiring.
I’m going to swap coils today and see if the misfire moves.
Any tips to getting the clip off the coils? Damn mine are on good.
After that, I really don’t know what to check next.
@@ryanpetkau3398 I always try with little pick tools. Sometimes the clips breaking is inevitable. I try with the pick tool to release the clip . Often I’ll try pushing the plug on further then pull back repeatedly and they usually come off . It’s more than likely a coil but moving one and seeing if a misfire moves is the best way to track . I suggest you use a sharpie before removing the suspected bad one and mark it in a way you’ll know it’s the suspect bad.
Coil swap didn’t work either.
Still misfire on 3.
I’m limited as to my skill, but not afraid to learn.
I’m a carpenter.
Better with wood than cars.
Broke the bolt on #4 coil how do i get the broken bolt out.
That sounds like a bad day. depending on how much meat is left on the bolt you could try the vice grip method, or if you can get a drill try to drill with reverse bits to try to get it out. Since the valve cover removal/replacement on this is such an intense job you will want to find any way you can to ensure the coil stays in place. I dont want to sound hacky but depending on the options you have a jb weld of the remaining bolt or a zip tie in a strategic place may be the only cheap option if you cant get the broken piece out.
@JustFixinGarage I just had this happen to me I used jb weld 550 degree epoxy to keep the it on put a heavy rock on the pack while it set lol 😂
what is the pin issue
The metal prongs were bent on the new coils and not going into the wire connector. Had to bend them straight
Hey Bro there is a clamp on driver side you didnt take off 1 screw people cant learn if you keep forwarding your vedeo
Hey Greg thanks for the feedback. Didn't have a camera man and tried to do a one show. I did say in the video there is a clamp on both sides but I should have panned over and showed it. Ill try to be a bit more descriptive in the future. Thanks again.
Plugs shouldn't have been that tight.
If I remember correct a few practically fell out but some were very tight. Much tighter than I put them back in. For something as delicate as spark plugs I try to do torque spec and oem plugs because it’s so cheap to do compared to store brand irts usually only a few dollars
K
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