Ping during acceleration
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Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
I installed a Motorcraft FG800A fuel filter 3 days ago. It accelerates better but it still pings with 87 octane.
I'm 99% sure that the anti drainback/check valve in the front tank is failing, I once had the rear tank on and it did fill up the front tank. I know there is an updated pump that fixes this issue but haven't gotten around to dropping the tank(s).
I'm 99% sure that the anti drainback/check valve in the front tank is failing, I once had the rear tank on and it did fill up the front tank. I know there is an updated pump that fixes this issue but haven't gotten around to dropping the tank(s).
Thread Starter
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Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
Ok guys, time to bump this, I have an update. I checked the wiring for both fuel pumpsand found the connectors were in need of some TLC. I cleaned them both off best I could and reinstalled the connectors. Best fuel pressure I can achieve is between 35-40 psi while driving on both pumps. I've been running 91 octane as a band-aid but guess what? IT STILL PINGS slightly. I'm stumped ...
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