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View Full Version : SR20DET S13 240sx low rpm misfire - Video!


JustTouge
10-28-2013, 01:14 AM
I've been trying to track down this misfire for a few days, as its seemed to have gotten worse lately. I could use some input/ideas. The video is loaded with info, I wish it could have more video of the car. It's hard to capture rolling solo.

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I had noticed it would develop a slight misfire when it would get driven for a longer period of time. The motor stays at operating temps as it should.

The misfire is very apparent when driving at low throttle inputs from 1,000-4,000rpm, once it hits 4,000rpm at say 15% throttle the car instantly clears up and pulls much better. I do not have a wideband and am concerned that even though it doesn't feel like its missing, it could be running lean.

Has anyone else experienced these symptoms? Help me get this coupe back at 100%

http://farm8.staticflickr.com/7307/10530986435_1c98b4b7aa_z.jpg (http://www.flickr.com/photos/tougephoto/10530986435/)
IMG_8334 (http://www.flickr.com/photos/tougephoto/10530986435/) by Touge Photo (http://www.flickr.com/people/tougephoto/), on Flickr

JustTouge
10-28-2013, 02:11 PM
No one has experienced this? Car is running a J4 ECU so I cannot pull codes, I do not have a consult port.