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secondary waveform captures (Read 278 times)
caseprobe
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secondary waveform captures
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
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cylinder_2_001.psdata (1428 KB | 21 )
cylinder__1.psdata (1093 KB | 17 )
cylinder__3.psdata (1421 KB | 19 )
cylinder__4.psdata (1418 KB | 17 )
 
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StitchB
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lake stevens, Washington, USA
lake stevens
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Re: secondary waveform captures
Reply #1 - 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

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