C Class (W205) C 180 BlueTec,C 200 BlueTec,C 220 BlueTec,C 220 BlueTec BlueEfficiency,C 250 BlueTec,C 300 BlueTec Hybridplus,C 180,C 180 BlueEfficiency,C 200,C 250,C 300,C 400 Plug-in Hybrid,C 400

2015 C300 Won't start

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 07-13-2019, 09:21 PM
  #1  
Newbie
Thread Starter
 
jcubs1's Avatar
 
Join Date: Mar 2013
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2015 C300 W205
Unhappy 2015 C300 Won't start

Did a spark plug change, pretty easy to do. Started the car and it started fine, I let it idle for a few minutes, then drove it after a few miles it started to misfire and now it won't start... Any ideas? I checked they were the correct plugs to start and have taken the boots back off and placed them on again to make sure they were on... which is pretty hard to tell.
Old 07-13-2019, 09:51 PM
  #2  
Newbie
 
maconmoney2012's Avatar
 
Join Date: Jun 2019
Posts: 9
Likes: 0
Received 3 Likes on 3 Posts
2007 C230
Have you tried disconnecting the battery and reconnecting it? if you have tried that and it still does not fix the issue, I would think it would be a defective plug or a worn out boot. Had this happen on my LS400 that I had. ended up just being one of the boots that got condensation in it.
Old 07-13-2019, 11:41 PM
  #3  
Newbie
Thread Starter
 
jcubs1's Avatar
 
Join Date: Mar 2013
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2015 C300 W205
Originally Posted by maconmoney2012
Have you tried disconnecting the battery and reconnecting it? if you have tried that and it still does not fix the issue, I would think it would be a defective plug or a worn out boot. Had this happen on my LS400 that I had. ended up just being one of the boots that got condensation in it.
Yeah i tried that first. I hope not, but I'm going to re-do it all and see. I got it to start randomly but running very rough.
Old 07-14-2019, 01:11 AM
  #4  
Newbie
Thread Starter
 
jcubs1's Avatar
 
Join Date: Mar 2013
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2015 C300 W205
So I found one of the new plugs busted up, which is weird because i used the same torque on all of them... Still starts but runs very rough. i vacuumed it out the best i could with a vacuum and pipe before retrying...

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: 2015 C300 Won't start



All times are GMT -4. The time now is 07:30 AM.