My A/F ratio went to 12.28 to12.94 on one run for like three seconds on nitrous!?WTF!
05-15-2006, 11:38 PM
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My A/F ratio went to 12.28 to12.94 on one run for like three seconds on nitrous!?WTF! My A/F ratio is almost always around 11.5 AFR and never any KR on nitrous, But for some strange reason on this run I was registering 1.5 deg of KR for a total timing of 21.5 deg two seconds before I went WOT and before I triggered the nitrous at WOT?! When I went WOT my A/f ratio went to 12.39(Lean spike) then the next frame went to 10.81 then 11.26 then 11.57 then all the sudden went to 12.61 then 12.28 then 12.94! 
and then went to 12.61 and then I let off on the throttle? WTF Is up with that! Registering KR before WOT and my A/F ratio going to 12.94 in one run. That was all in second gear but when I went to third gear and all was normal. I had no KR and my A/F ratio was back to around 11.5 again at WOT? What do you guy’s think about that. ? I did not hear any pinging BTW and my main Fuel Pressure goes to 60 PSI at WOT and is steady. Now I’m scared to use nitrous. What do yall think is going on with all the strange reading's? I think It's time to check and change the TR-6 plugs again. 
and then went to 12.61 and then I let off on the throttle? WTF Is up with that! Registering KR before WOT and my A/F ratio going to 12.94 in one run. That was all in second gear but when I went to third gear and all was normal. I had no KR and my A/F ratio was back to around 11.5 again at WOT? What do you guy’s think about that. ? I did not hear any pinging BTW and my main Fuel Pressure goes to 60 PSI at WOT and is steady. Now I’m scared to use nitrous. What do yall think is going on with all the strange reading's? I think It's time to check and change the TR-6 plugs again. Last edited by Oatmeal; 05-16-2006 at 01:46 PM.
05-16-2006, 01:27 AM
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Originally Posted by calongo_SS
Swollen plunger in the fuel noid? Pull it apart and check it out.
05-16-2006, 09:15 PM
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Originally Posted by calongo_SS
From the nossle to the solenoid will get some air in it, but the other lines will not. This can give an initial lean spike, but should not go from rich to lean.
Last edited by Oatmeal; 05-16-2006 at 09:22 PM.
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05-19-2006, 12:51 AM
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Originally Posted by SmaknaSS
My A/F ratio is almost always around 11.5 AFR and never any KR on nitrous, But for some strange reason on this run I was registering 1.5 deg of KR for a total timing of 21.5 deg two seconds before I went WOT and before I triggered the nitrous at WOT?! When I went WOT my A/f ratio went to 12.39(Lean spike) then the next frame went to 10.81 then 11.26 then 11.57 then all the sudden went to 12.61 then 12.28 then 12.94! and then went to 12.61 and then I let off on the throttle? WTF Is up with that! Registering KR before WOT and my A/F ratio going to 12.94 in one run. That was all in second gear but when I went to third gear and all was normal. I had no KR and my A/F ratio was back to around 11.5 again at WOT? What do you guy’s think about that. ? I did not hear any pinging BTW and my main Fuel Pressure goes to 60 PSI at WOT and is steady. Now I’m scared to use nitrous. What do yall think is going on with all the strange reading's? I think It's time to check and change the TR-6 plugs again.
and then went to 12.61 and then I let off on the throttle? WTF Is up with that! Registering KR before WOT and my A/F ratio going to 12.94 in one run. That was all in second gear but when I went to third gear and all was normal. I had no KR and my A/F ratio was back to around 11.5 again at WOT? What do you guy’s think about that. ? I did not hear any pinging BTW and my main Fuel Pressure goes to 60 PSI at WOT and is steady. Now I’m scared to use nitrous. What do yall think is going on with all the strange reading's? I think It's time to check and change the TR-6 plugs again.
05-19-2006, 01:20 AM
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The strange thing is that I rolled into WOT and I still got KR, even with a initial AFR of 10.8 I was still seeing KR.and then going lean all at the same time. This is definatly one of the stranges logs I ever seen. 
I wanna try to post a log file if I can.
I wanna try to post a log file if I can.
05-19-2006, 05:00 PM
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Originally Posted by SmaknaSS
The strange thing is that I rolled into WOT and I still got KR, even with a initial AFR of 10.8 I was still seeing KR.and then going lean all at the same time. This is definatly one of the stranges logs I ever seen. I wanna try to post a log file if I can.
I wanna try to post a log file if I can.
05-19-2006, 10:23 PM
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Originally Posted by LoWeLL216
Yeah, you shouldn't be getting tip-in knock if you're rolling into WOT. I'm sure you already know, but you can easily get KR without hearing any pinging. What timing are you running at WOT? Do you get KR when you're doing NA runs?
Time to go party. Last edited by Oatmeal; 05-19-2006 at 10:29 PM.
05-19-2006, 10:29 PM
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Originally Posted by SmaknaSS
I have never taken a fuel solinoid apart. What parts would yall's recomend replacing in the fuel solinoid?
05-19-2006, 10:29 PM
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Originally Posted by SmaknaSS
Running NA Im making the most power around 28* rarley any KR at all, when I was getting KR this time my timing was retarded already to 23 Deg (with KR was actually at 21.5 Deg) getting ready to hit the nitrous, BTW I took the fuel noid apart today and found the rubber peice on the end of the piston swollen like a spong compared to the new one I just got. I just got done replacing it. For now on I'm going to keep a stock pile of extra new parts for the fuel and nitrous noids and inspect it every two months for now on. I'm starting to think that the KR was false knock. I'm just going to keep watching it with my flashscan software. Thanks for all the replys everyone. Time to go party.
Time to go party. 
05-21-2006, 12:00 AM
#16
Ethenol is starting to show up in gasoline in many places where it has not been used before. Some states have removed the requirement to post on the pump if the gas has ethenol in it. 
Ethenol as well as other fuel additives can cause the fuel noid seal to swell and stick shut. When this happens you will go lean.
I sure hope the solenoid manufacturers hurry up and find a material that will be compatable with 10% ethenol as it is may become mandatory in your pump gas in the future.
Ethenol as well as other fuel additives can cause the fuel noid seal to swell and stick shut. When this happens you will go lean.I sure hope the solenoid manufacturers hurry up and find a material that will be compatable with 10% ethenol as it is may become mandatory in your pump gas in the future.
05-21-2006, 12:58 AM
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Originally Posted by terry s
Ethenol is starting to show up in gasoline in many places where it has not been used before. Some states have removed the requirement to post on the pump if the gas has ethenol in it. Ethenol as well as other fuel additives can cause the fuel noid seal to swell and stick shut. When this happens you will go lean.
I sure hope the solenoid manufacturers hurry up and find a material that will be compatable with 10% ethenol as it is may become mandatory in your pump gas in the future.
Ethenol as well as other fuel additives can cause the fuel noid seal to swell and stick shut. When this happens you will go lean.I sure hope the solenoid manufacturers hurry up and find a material that will be compatable with 10% ethenol as it is may become mandatory in your pump gas in the future.
05-21-2006, 01:04 AM
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Originally Posted by LoWeLL216
...Just check the fuel noid more often I guess...
05-21-2006, 08:53 AM
#19
Nitrous Express says they are working on it but don't have anything yet. I don't know about the other solenoid manufacturers.
This is why I bought a 2 channel FJO wide band that will shut the system down if it gets too rich or to lean. It was not cheap but I can' afford to loose an engine because of something in the fuel that I don't even know is in there.
This is why I bought a 2 channel FJO wide band that will shut the system down if it gets too rich or to lean. It was not cheap but I can' afford to loose an engine because of something in the fuel that I don't even know is in there.
05-21-2006, 11:13 PM
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I have not used regular fuel through my fuel noid for almost a month and a half since I got my stand alone, but I have been using VP motorsport 109 in the stand alone. I'm not shure if it was the cheveron 91 octane pump gas from before that caused the swelling in the fuel noid or the VP motorsport 109. I think I'm going to start checking it every few weeks and let everyone know what I find.
Last edited by Oatmeal; 05-22-2006 at 10:50 AM.