*** Restricting New Posts to SD Premium Members ONLY *** (09 May 2025)

Just made a new account? Can't post? Click above.

Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

Rich and lean at the same time

  • pquick
  • pquick's Avatar Topic Author
  • Offline
  • New Member
  • New Member
More
7 years 8 months ago #17287 by pquick
Replied by pquick on topic Rich and lean at the same time
all the coils are firing and have good ramp shape and look good. Plus they are all new.

Please Log in or Create an account to join the conversation.

  • juergen.scholl
  • juergen.scholl's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
  • Active partschanger
More
7 years 8 months ago #17297 by juergen.scholl
Replied by juergen.scholl on topic Rich and lean at the same time
A secondary ignition waveform will show what's happening in the combustion chamber, from A/F ratio up to compression. ... I understand you measured the primary amp draw of the coils but this is completely different from a secondary. Can u get a secondary waveform from each bank under similar conditions?
An expert is someone who knows each time more on each time less, until he finally knows absolutely everything about absolutely nothing.

Please Log in or Create an account to join the conversation.

  • pquick
  • pquick's Avatar Topic Author
  • Offline
  • New Member
  • New Member
More
7 years 8 months ago #17383 by pquick
Replied by pquick on topic Re:Rich and lean at the same time
I get .7 lb/ per min at Idle and 19 lb/ min at WOT in third gear.

Please Log in or Create an account to join the conversation.

  • pquick
  • pquick's Avatar Topic Author
  • Offline
  • New Member
  • New Member
More
7 years 8 months ago #17384 by pquick
Replied by pquick on topic Rich and lean at the same time
Sorry I had to borrow a scanner last time to get to see the primary side. My little scanner doesn't show scope info. I will try and borrow again

Please Log in or Create an account to join the conversation.

More
7 years 8 months ago #17390 by Ben
Replied by Ben on topic Re:Rich and lean at the same time
Converting that to grams that's 5.2 grams a second at idle and 143 at wide open throttle which is low for a v8 I believe were in need of a good maf cleaning

Sent from my SM-N920P using Tapatalk

Please Log in or Create an account to join the conversation.

Time to create page: 0.450 seconds