Hot Start Issue / Flooding

Pete_89T2 · 07-20-2011, 07:35 PM

Another thing that causes flooding, especially if the car isn't driven frequently enough, is leaky injectors. What happens is over time fuel deposits/varnish will cause the injectors to stick open a bit. Since the fuel lines are still under pressure for a short time after you shut down, some of that pressurized fuel leaks down into the engine. This is more likely to happen with the secondaries, since they only open above 3500 RPMs or so, and they will be "exercised" much less than the primaries under normal street driving conditions.

Have the fuel injectors in this car ever been removed for cleaning/flow test service? 60K miles on a 21 year old FC tells me this guy's car hasn't been driven on a regular basis, so the odds that the injectors are gummed up are pretty good - I'd consider this a preventive maintenance item.

07-20-2011, 07:35 PM	#10
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 16	Another thing that causes flooding, especially if the car isn't driven frequently enough, is leaky injectors. What happens is over time fuel deposits/varnish will cause the injectors to stick open a bit. Since the fuel lines are still under pressure for a short time after you shut down, some of that pressurized fuel leaks down into the engine. This is more likely to happen with the secondaries, since they only open above 3500 RPMs or so, and they will be "exercised" much less than the primaries under normal street driving conditions. Have the fuel injectors in this car ever been removed for cleaning/flow test service? 60K miles on a 21 year old FC tells me this guy's car hasn't been driven on a regular basis, so the odds that the injectors are gummed up are pretty good - I'd consider this a preventive maintenance item. Last edited by Pete_89T2; 07-20-2011 at 07:44 PM. Reason: fixed fat finger typing errors