The Autonerdz Community Forums
https://www.autonerdz.com/cgi/yabb2/YaBB.pl
General Public Area >> For Non-Technicians >> secondary waveform captures
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1507028528

Message started by caseprobe on Oct 3rd, 2017 at 4:02am

Title: secondary waveform captures
Post by caseprobe on Oct 3rd, 2017 at 4:02am
Anybody have a look over these secondary captures made on a 16 valve 1.6 renault scenic.I used a cop extension lead to directly look at the secondary.I think 3 and 4 have issues.all at idle speed.
Main symptoms are intermittent power,to full power with no pattern hot cold etc.The car  can improve after being left after a run but not always
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=cylinder_2_001.psdata (1428 KB | 351 )
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=cylinder__1.psdata (1093 KB | 274 )
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=cylinder__3.psdata (1421 KB | 248 )
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=cylinder__4.psdata (1418 KB | 279 )

Title: Re: secondary waveform captures
Post by StitchB on Oct 3rd, 2017 at 10:31am
IMO, KV seems a little high but burn time frame is around 1.3 to 1.5 MS,  which is good, don't see anything in the rise or fall of the burn which looks offensive. In my opinon they look pretty good and 3-4 don't look much different than 1-2.

Would like too see some scan data over pico looking @ fuel trims (miss fire data ect) and the like as I don't see this as an ignition issue. You stated 3 and 4 has issues, what is your basis for that?

Also do a volumetric effeciency to validate engine health and breathing issues.

Larry


The Autonerdz Community Forums » Powered by YaBB 2.5 AE!
YaBB Forum Software © 2000-2010. All Rights Reserved.