[Khambinho]

[IMG]https://youtube.com/shorts/U9vDFsk9H08?feature=share[/IMG]

I just changed my sparks and coils with bosch products, but now the car shakes and has hiccups that i hear through the exhaust. I torqued them down to 17ftp (sparks) gapped at oem spec. What coulda be the issue and what could I be doing wrong.

I tried to put in the old sparks and plugs but having the same issue. There are no codes being thrown. RPM jump a little on start

I have also went back to stock tune but am still having the same issue.
Some advice and help would be appreciated

See the video attached!

2014 335i n55 ewg
Catless dp
Intake
Stage 1

[435gc]

You sure the coils are all the way seated?

Did you use any dielectric grease?

[Khambinho]

Originally Posted by 435gc

You sure the coils are all the way seated?

Did you use any dielectric grease?

I can try and reseat them.

No I didnt use grease. Thought you weren't supposed too

[Orion4]

That "sounds" like an ignition coil not being fully seated or it's connector not being fully seated and the retainer fully closed. Dialectic grease is ok, but only in very small amounts. Too much and the coil may tend to slide up on the plug.

[n55david]

it's an ignition problem as started above. coil or plug issue

[Khambinho]

Can someone send a link to the grease and how/where to apply it

[n55david]

Originally Posted by Khambinho

Can someone send a link to the grease and how/where to apply it

Google dielectric grease

I mean.. yeah

[435gc]

I've never used grease. With the ignition coils having a rubber seal shouldn't be necessary.

Thought that might have been the cause of op's issues if he had.

[Khambinho]

Originally Posted by 435gc

I've never used grease. With the ignition coils having a rubber seal shouldn't be necessary.

Thought that might have been the cause of op's issues if he had.

Ill just try and reseat them first.

[Khambinho]

Still no luck.
Im gonna try and send back the sparks and coils to fcp euro and get oem BMW ones

[F32Fleet]

Originally Posted by Khambinho

Still no luck.
Im gonna try and send back the sparks and coils to fcp euro and get oem BMW ones

If you had a scanner you would know which cylinder is causing the issue.

[Khambinho]

Originally Posted by F32Fleet

If you had a scanner you would know which cylinder is causing the issue.

I do have a scanner, car isnt throwing codes

[F32Fleet]

Originally Posted by Khambinho

I do have a scanner, car isnt throwing codes

I don't think the issue is the plugs and coils since you're still having the problem with the stock components.

[auburnf30x]

I'm surprised the car isn't throwing codes if it's misfiring like that...but nothing you can do about that if it isn't.

Back to the beginning though, I see where you put the original plugs back in but unless you missed it, or had a typo, I don't see that you tried putting the old coils back on, too. Could be one of your new coils is bad.

[Dynamic_m235]

Originally Posted by Khambinho

I do have a scanner, car isnt throwing codes

Same problem. Check your injectors if you can even though they aren't throwing codes. I just order the bmp PI kit to fix it. Talk to Moe @ German motors in Wayne NJ. He's fixed this problem with an n55 m2 and my car. He said the HPfP fixed the m2s problem so I just ordered the PI kit to take care of both fueling and injection issues

[435gc]

That's a fresh take.

Problem with a fuel injector so I went ahead and installed PI.

[Khambinho]

Interesting, Im not sure since I wasn't have fuel injector issues before.

My new coils are on the way , ill keep you updated

[Khambinho]

Originally Posted by Khambinho

Interesting, Im not sure since I wasn't have fuel injector issues before.

My new coils are on the way , ill keep you updated

Apparently fcp euro sent me the wrong coils , and after inspecting my original coils i see a slight whole near the top close to the connector on one coil which could be causing the issue.

Ill see how i goes once I get my new coils

[thejeremyman9]

Originally Posted by 435gc

That's a fresh take.

Problem with a fuel injector so I went ahead and installed PI.

Lol, i read that and was like... what?

[a.noo]

As a technician, I had a similar problem, but on a different car. It was a 2008 Infiniti G35. These cars were notorious in accidentally mixing up ignition coil wires. Check to see if you accidentally mixed up 2 ignition wires. (i.e ignition wire for cylinder 1 to cylinder 2.) If you swapped back to your original coils and plugs and the problem is still there, but you never had a problem from before the coil & plug install, then there is a big chance that it was a human error and not the car or the parts.

[n55david]

Originally Posted by 435gc

That's a fresh take.

Problem with a fuel injector so I went ahead and installed PI.

Originally Posted by thejeremyman9

Lol, i read that and was like... what?

yeah.. I was like wtf lol. is he serious lol

[Khambinho]

Originally Posted by a.noo

As a technician, I had a similar problem, but on a different car. It was a 2008 Infiniti G35. These cars were notorious in accidentally mixing up ignition coil wires. Check to see if you accidentally mixed up 2 ignition wires. (i.e ignition wire for cylinder 1 to cylinder 2.) If you swapped back to your original coils and plugs and the problem is still there, but you never had a problem from before the coil & plug install, then there is a big chance that it was a human error and not the car or the parts.

Ok Ill take a look!