Stock fuel pump flow rate and pressure .
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Joined: Apr 2017
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From: Raleigh nc
Stock fuel pump flow rate and pressure .
Im in need of some information ..
I have a fresh build on a 2007 Softail 124 inch twin cam .. originally a 96 inch . Ive been having fuel pressure issues and Ive replaced everything inside the tank with new . The pump I used was from a company called The Fuel pump Factory . Its supposed to be an Oem type replacement , plug and play . Ive replaced the problematic plastic fuel pump housing with a Trask billet type to eliminate any leaking.. been inside the tank with a bore scope to insure it wasnt leaking anywhere. Its not leaking.. But Im only able to get 53 psi of fuel . Its steady and holding while I change rpms .. And its supposed to be 58 to 62 psi . My question is , how many lph does the Oem pump deliver and Am I right , thinking I need a bigger fuel pump . Or maybe just a better one The bike has the HPi 62mm throttle body with the yellow band 6.2 injectors.. So Im thinking I need a pump that delivers more fuel . More than the Oem ..
And if So , where would be a good place to find a pump thatll fit without a lot of modifications , if any ? Thank you in advance
I have a fresh build on a 2007 Softail 124 inch twin cam .. originally a 96 inch . Ive been having fuel pressure issues and Ive replaced everything inside the tank with new . The pump I used was from a company called The Fuel pump Factory . Its supposed to be an Oem type replacement , plug and play . Ive replaced the problematic plastic fuel pump housing with a Trask billet type to eliminate any leaking.. been inside the tank with a bore scope to insure it wasnt leaking anywhere. Its not leaking.. But Im only able to get 53 psi of fuel . Its steady and holding while I change rpms .. And its supposed to be 58 to 62 psi . My question is , how many lph does the Oem pump deliver and Am I right , thinking I need a bigger fuel pump . Or maybe just a better one The bike has the HPi 62mm throttle body with the yellow band 6.2 injectors.. So Im thinking I need a pump that delivers more fuel . More than the Oem ..
And if So , where would be a good place to find a pump thatll fit without a lot of modifications , if any ? Thank you in advance
Last edited by Kwikwilson007; Aug 19, 2024 at 06:41 PM.
Im in need of some information ..
I have a fresh build on a 2007 Softail 124 inch twin cam .. originally a 96 inch . Ive been having fuel pressure issues and Ive replaced everything inside the tank with new . The pump I used was from a company called The Fuel pump Factory . Its supposed to be an Oem type replacement , plug and play . Ive replaced the problematic plastic fuel pump housing with a Trask billet type to eliminate any leaking.. been inside the tank with a bore scope to insure it wasnt leaking anywhere. Its not leaking.. But Im only able to get 53 psi of fuel . Its steady and holding while I change rpms .. And its supposed to be 58 to 62 psi . My question is , how many lph does the Oem pump deliver and Am I right , thinking I need a bigger fuel pump . Or maybe just a better one The bike has the HPi 62mm throttle body with the yellow band 6.2 injectors.. So Im thinking I need a pump that delivers more fuel . More than the Oem ..
And if So , where would be a good place to find a pump thatll fit without a lot of modifications , if any ? Thank you in advance
I have a fresh build on a 2007 Softail 124 inch twin cam .. originally a 96 inch . Ive been having fuel pressure issues and Ive replaced everything inside the tank with new . The pump I used was from a company called The Fuel pump Factory . Its supposed to be an Oem type replacement , plug and play . Ive replaced the problematic plastic fuel pump housing with a Trask billet type to eliminate any leaking.. been inside the tank with a bore scope to insure it wasnt leaking anywhere. Its not leaking.. But Im only able to get 53 psi of fuel . Its steady and holding while I change rpms .. And its supposed to be 58 to 62 psi . My question is , how many lph does the Oem pump deliver and Am I right , thinking I need a bigger fuel pump . Or maybe just a better one The bike has the HPi 62mm throttle body with the yellow band 6.2 injectors.. So Im thinking I need a pump that delivers more fuel . More than the Oem ..
And if So , where would be a good place to find a pump thatll fit without a lot of modifications , if any ? Thank you in advance
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Joined: Apr 2017
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From: Raleigh nc
Ive tried two different regulators and its at the same level . So thats why Im looking at the pump .. Its having a hard start issue when its at operating temp . And with the pressure at 53lbs , Im thinking it has to be the low pressure.. like I mentioned in the original post . Everything is new .. The throttle body , injectors, the pump , the filters , the regulator and the regulator housing. And All the lines inside the tank , with a new quick release fitting at the base of the tank . Even the engine is new . I feel like Ive covered All bases . Thats why Im leaning towards the pump . Plus , the larger injectors and throttle body . I tested the pressure at different rpms while running.. so Ive checked it closely
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From: poway
One thing to note is that you really need to look at the fuel pressure while the pump is running.. On the 3 efi bikes I owned, the pressure would be around 60 when running but as soon as the pump stopped they would drop to 50-55 and hold.. IMO this is good..
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Joined: Jan 2024
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From: Trinidad
Ive tried two different regulators and its at the same level . So thats why Im looking at the pump .. Its having a hard start issue when its at operating temp . And with the pressure at 53lbs , Im thinking it has to be the low pressure.. like I mentioned in the original post . Everything is new .. The throttle body , injectors, the pump , the filters , the regulator and the regulator housing. And All the lines inside the tank , with a new quick release fitting at the base of the tank . Even the engine is new . I feel like Ive covered All bases . Thats why Im leaning towards the pump . Plus , the larger injectors and throttle body . I tested the pressure at different rpms while running.. so Ive checked it closely
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From: Raleigh nc
Last edited by Kwikwilson007; Aug 21, 2024 at 12:48 PM.
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From: florida
it sounds like the only thing to do is put a different pump in it and run your tests again and compare results.
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