Fuel pressure drops in 1 min
Joined: Jan 2005
Posts: 10,426
Likes: 497
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Fuel pressure drops in 1 min
By design the TBI regulator does not hold pressure. It has a bleed hole drilled in the casting. Even if it has a TPI style pump with a check valve in the pump it will bleed off unless that passageway is plugged.
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