Question about battery/alternator function at idle.

Lol. That's with the engine out.

This is the left side engine in. There's a rubber hose on the other end of that you can't see in that pic. I have no clue how you get to that insitu.

Thankfully it wasn't my issue. Ricambi doesn't even stocknthem.
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Well, clearly Dennis did it so it must be accessible

IMO, the bigger issue is containing the fuel from getting all over the engine when you start disconnecting the lines. I believe the entire fuel rail may contain fuel so that's a fairly large volume.

Regarding the part, It's Bosch 0280160564, $227 (BTW, the fuel rail is Bosch too)

Fuel Pressure Regulator Fuel Pressure Regulator BOSCH 0280160564 Ferrari 167321

 

Well hopefully he'll explain how he did that and what disassembly was necessary. I was thinking the approach had to be from above but just taking that picture required maneuvering.

 

Just take off the back tire and reomove the shields, and there it is, attached to the fuel rail.

 

Dennis - how did you contain the fuel?

 

I didn't. I will smell like gasoline until Sunday.

 

Dennis - be sure to wash down the engine bay so you don't burn the car to the ground...

 

Since it's well forward of the shock tower, there's a surprising amount of room. If you're 5'8"...

 

Yep...sprayed the bay down with Bike Brite and rinsed her off.

I gotta believe every F355 owner has fantasized about his/her car going up in flames at least once...

 

Looks similar to my lawn mower engine, does not take long to cut the grass on a sunday afternoon. !!

 

Ha! I'd love to see your mower. 8500 RPM must be hell on blades.

Not much fuel to contain when changing a regulator. Wrap a rag around the fitting as best you can and have at it. The spilled fuel will be evaporated by the time the wheel well liner is reinstalled, although the smell will remain for a while. Plastic gloves are your friend.

Glad you got it fixed, Outcast. Figured it was an injection issue but didn't really suspect a regulator based on the symptoms mentioned. How did you arrive at that conclusion?

FWIW, battery issues can indeed cause similar problems so it was worth considering even though it wasn't the first place my mind went. With an older battery it's certainly something to think about. A load test or battery condition tester would quickly confirm or deny the theory.

 

You need running shoes to keep up with it.

 

I guess "much" is subjective as you will have the volume in the line before the regulator and the volume of the fuel rail - I'd guess it's 1/2 a coffee cup...

 

It was a two-component Scientific Wild-A** Guess, based on 1) the fact that my injectors were given a clean bill of health when the car had a comprehensive Major Service one year ago and, 2) the fact that the car's idle dove sharply below 1000 RPM after sustained higher-RPM activity when I took my foot off the gas, suggesting something related to vacuum. Those two things, combined with Dave Rocks' assessment of the behavior as possibly fuel-related, which was also suggested by a highly-regarded Ferrari technician with whom I'm acquainted, drove my actions. Luckily, it worked.

 

I guess that would depend on the size of your coffee cup, Dave...
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Daves a machinist engineer so he prefers cutting fluid to gasoline.