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by aspecht3
Thu Nov 27, 2008 4:04 pm
Forum: Injectors, Fuel & Air Supply
Topic: Fuel for best starting hot
Replies: 2
Views: 418

Re: Fuel for best starting hot

Mazda uses a small bypass air solnoid to lower fuel pressure on hot start up for 20 seconds to get the hot boiling fuel back to the tank and push fresh gas back in, thats how most oem do it I believe, the ecm compensates for the lowered fuel pressure by increasing the pw slightly.