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The Terminator
Engine/Tuning
Cure to 2500 rpm lean spike
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<blockquote data-quote="RainyP71" data-source="post: 16496822" data-attributes="member: 172042"><p>All that sounds great to try. Also this idea came to me today, what if your pumps or tank setup is somehow introducing air into the system? If youre pumping aerated fuel to the rails, the way your setup is there is no where for air to escape like in a return system, the air usually would follow the system back through the return line into the tank making less of an effect. What if that damper is doing nothing but acting as a "catchcan" high point where air is finding it's way to and settling there, allowing air to settle out of the fuel so you get only fuel through the injectors. I might install clear lines to the rails and do a visual inspection. That could explain your mixtures leaning out as well. </p><p></p><p>So it could possibly NOT be a pressure issue, but is presenting as one. The air has just now settled into the new high point of the returnless section at the rails (the damper) and that damper + the compressable air there is now somewhat trapped, and the pumps and regulator as well as the damper are working to compensate from that compression/release cycle of the trapped air, but it's still running better, just shifted the problem. You did say your regulator was mounted low in the fenderwell, you could be unknowingly making your rails the high point for air in the system! </p><p></p><p>Sent from my SM-G975U using Tapatalk</p></blockquote><p></p>
[QUOTE="RainyP71, post: 16496822, member: 172042"] All that sounds great to try. Also this idea came to me today, what if your pumps or tank setup is somehow introducing air into the system? If youre pumping aerated fuel to the rails, the way your setup is there is no where for air to escape like in a return system, the air usually would follow the system back through the return line into the tank making less of an effect. What if that damper is doing nothing but acting as a "catchcan" high point where air is finding it's way to and settling there, allowing air to settle out of the fuel so you get only fuel through the injectors. I might install clear lines to the rails and do a visual inspection. That could explain your mixtures leaning out as well. So it could possibly NOT be a pressure issue, but is presenting as one. The air has just now settled into the new high point of the returnless section at the rails (the damper) and that damper + the compressable air there is now somewhat trapped, and the pumps and regulator as well as the damper are working to compensate from that compression/release cycle of the trapped air, but it's still running better, just shifted the problem. You did say your regulator was mounted low in the fenderwell, you could be unknowingly making your rails the high point for air in the system! Sent from my SM-G975U using Tapatalk [/QUOTE]
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Engine/Tuning
Cure to 2500 rpm lean spike
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