Fueling issue discusion
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Joined: Dec 2007
Posts: 353
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From: Homosassa Florida
Did you ever fix your fuel issue?
I saw a post where you were having issues where your car was just cutting out. I'm having the same issue, I have a greddy turbo kit, car will be running fine and just lose fuel pressure. I wait a while car restarts. I just changed out the pump to an aem and I'm waiting on a new relay. What was your issue and or your fix. Was it the map?Thanks Martin
Joined: Jan 2017
Posts: 861
Likes: 24
From: United States
My buddies setup is the aem external pump. Radium surge tank. He still had fuel probs at 450whp. It was the intake temp sensor for him. He relocated b4 the TB and it's fixed. BTW it was a complete race car.
Registered User
Joined: Dec 2007
Posts: 353
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From: Homosassa Florida
How was he able to figure out it was the temp sensor? Did it throw a check engine light? I'm just wondering, I might try that.
Joined: Jan 2017
Posts: 861
Likes: 24
From: United States
I think he said it was telling the temp of intake was too high and it cut fuel. Something like that. He relocated it the the intake and said it was fine. I'm racing with him in 2 weeks and il let u know wat he says. He said the fuel starve would happen after a bunch of hot laps and it was unpredictable. If ur car is cutting fuel in a couple of pills it might b something else. And ur running a 255 pump? For 400whp that's small.
Registered User
Joined: Dec 2007
Posts: 353
Likes: 0
From: Homosassa Florida
I think he said it was telling the temp of intake was too high and it cut fuel. Something like that. He relocated it the the intake and said it was fine. I'm racing with him in 2 weeks and il let u know wat he says. He said the fuel starve would happen after a bunch of hot laps and it was unpredictable. If ur car is cutting fuel in a couple of pills it might b something else. And ur running a 255 pump? For 400whp that's small.
Joined: Mar 2012
Posts: 673
Likes: 7
From: Montreal
Interesting thread.
I had the same problem with my aeromotive 340. On hot track days the car would die , waited about 10min and it would start again.
Then it happened on the dyno , bypassed the relay and I could barely hear the pump. Again waited about 10 min and good to go.
Had this idea that the pump was to big. I'm at 10 psi 350whp. The more your pressurize the fuel the hotter it gets. And every time it passes in the fuel rail then back in the tank it again gets hotter. Maybe even pressuring the tank and making harder to pump ??
Changed to a smaller walbro 255. Waiting on a hot track day to find out.
That intake temp sensor thing gets my intrigued??
I had the same problem with my aeromotive 340. On hot track days the car would die , waited about 10min and it would start again.
Then it happened on the dyno , bypassed the relay and I could barely hear the pump. Again waited about 10 min and good to go.
Had this idea that the pump was to big. I'm at 10 psi 350whp. The more your pressurize the fuel the hotter it gets. And every time it passes in the fuel rail then back in the tank it again gets hotter. Maybe even pressuring the tank and making harder to pump ??
Changed to a smaller walbro 255. Waiting on a hot track day to find out.
That intake temp sensor thing gets my intrigued??
Last edited by Sylvain2000; May 27, 2017 at 06:41 PM.
Joined: Mar 2012
Posts: 673
Likes: 7
From: Montreal
Originally Posted by Sylvain2000
Interesting thread.
I had the same problem with my aeromotive 340. On hot track days the car would die , waited about 10min and it would start again.
Then it happened on the dyno , bypassed the relay and I could barely hear the pump. Again waited about 10 min and good to go.
Had this idea that the pump was to big. I'm at 10 psi 350whp. The more your pressurize the fuel the hotter it gets. And every time it passes in the fuel rail then back in the tank it again gets hotter. Maybe even pressuring the tank and making harder to pump ??
Changed to a smaller walbro 255. Waiting on a hot track day to find out.
That intake temp sensor thing gets my intrigued??
I had the same problem with my aeromotive 340. On hot track days the car would die , waited about 10min and it would start again.
Then it happened on the dyno , bypassed the relay and I could barely hear the pump. Again waited about 10 min and good to go.
Had this idea that the pump was to big. I'm at 10 psi 350whp. The more your pressurize the fuel the hotter it gets. And every time it passes in the fuel rail then back in the tank it again gets hotter. Maybe even pressuring the tank and making harder to pump ??
Changed to a smaller walbro 255. Waiting on a hot track day to find out.
That intake temp sensor thing gets my intrigued??
Changing to a smaller walbro 255 solved my issue
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