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Re: Controlling lambse on decel
Posted: 2022 Jul 21, 14:51
by PaulC-turbo5.0
Did you see the load drop to below .16? Did you try increasing to a higher load?
Re: Controlling lambse on decel
Posted: 2022 Jul 21, 15:06
by canuck1
Yes, I did definitely se load drop below .16. I didn't try changing it to a higher load. Am I right to expect the CL/OL indicator switch to open loop when FN338 is functioning as expected?
Sean
Re: Controlling lambse on decel
Posted: 2022 Jul 21, 15:32
by PaulC-turbo5.0
Yea the indicator will switch.
I would try increasing the load a bit next time to see if it will go into OL.
Re: Controlling lambse on decel
Posted: 2022 Jul 21, 16:06
by canuck1
I'll finish sorting through my electrical gremlins before having another go at this. Thanks!
Sean
Re: Controlling lambse on decel
Posted: 2022 Aug 27, 16:04
by canuck1
Gremlins gone. I can now see it dropping into OL on decel at the desired load value. I might try raising FN338 a little, just to experiment. Thanks again for the guidance on this!
Sean
Re: Controlling lambse on decel
Posted: 2022 Aug 28, 08:13
by PaulC-turbo5.0
Nice! What was the culprit?
Re: Controlling lambse on decel
Posted: 2022 Aug 29, 23:11
by canuck1
Looks like maybe a combination of things, mostly a vacuum connection to fuel regulator that had unknowingly pulled off. Everything looked visually right, but when i tugged on hose, i could see it wasn't connected to manifold barb fitting. Small vacuum leak and an operator who continued to make changes to MAF values made things slowly worse, until it no longer supplied fuel as demanded. Yes, I'm embarrassed, but at least I'm willing to admit I screwed up! Seems good now.
When I get home from brief vacay, I'll try a higher value for FN338.
Sean