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lexington523 05-19-2011 12:31 PM

No Fuel During Hard Cornering
 
I participated in my first rally cross event last weekend. I'm definately hooked after only one event. However, I arrived at the run with slightly less than 1/2 tank of gas to save some weight. During hard cornering, I would completely lose fuel pressure and the engine would stall. On the hardest right turn on the course I could get it to completely stall out and would have to do a rolling start to continue. Luckily I was able to go get a fill up after my first three runs. My next three runs were much better with a full tank, no problems at all. Has anyone else here had this problem? What can I do to remedy it (asside from a full gas tank). Thank you for any input.

GodLovesUgly 05-19-2011 12:39 PM

you probably want to post this in the tech chat to get a better response.

tukaniSVT 05-19-2011 12:39 PM

I was always told to run with a full tank. Reason ... sure its more weight ... but less liquid moving.

All of those hard turns push the liquids around and in a full tank they don't move as much.

But ... I have ran once or twice with a 1/2 a tank and haven't ran into those problems before ...

Might need to check your fuel pump or fuel filter. Might not be letting enough fuel go to the engine to at least have a few fumes of reserve before saying ... oh out of fuel.

-Ray-

lexington523 05-19-2011 12:45 PM

Quote:

Originally Posted by tukaniSVT (Post 3676626)
I was always told to run with a full tank. Reason ... sure its more weight ... but less liquid moving.

All of those hard turns push the liquids around and in a full tank they don't move as much.

But ... I have ran once or twice with a 1/2 a tank and haven't ran into those problems before ...

Might need to check your fuel pump or fuel filter. Might not be letting enough fuel go to the engine to at least have a few fumes of reserve before saying ... oh out of fuel.

-Ray-

The fuel filter was changed for a new motorcraft filter only 2 weeks ago.

tukaniSVT 05-19-2011 12:47 PM

Sounds like your ride really wants a full tank to take the corners.

You are probably rolling alot having half the tank move past the fuel pump and letting nothing go into the fuel lines.

Good remedy to that would be good stiff shocks.

-Ry-

lexington523 05-19-2011 12:49 PM

Quote:

Originally Posted by tukaniSVT (Post 3676638)
Sounds like your ride really wants a full tank to take the corners.

You are probably rolling alot having half the tank move past the fuel pump and letting nothing go into the fuel lines.

Good remedy to that would be good stiff shocks.

-Ry-

I have a brand new svt shock and spring set up with anti-sway bar. My tires were also 45psi. I had hardly any body roll at all.

tukaniSVT 05-19-2011 12:52 PM

IMHO ... the SVT Shocks and Springs roll alot.

My SVT is under re-construction at the moment and I drove another members SVT on the Stock setup ... and my goodness every turn I was on 3 wheels. Lots of roll.

Okay ... what about checking your Injectors? Have you cleaned them lately? Be surprised how much better they run with a bit of cleaning.

-Ray-

lexington523 05-19-2011 12:57 PM

Quote:

Originally Posted by tukaniSVT (Post 3676645)
IMHO ... the SVT Shocks and Springs roll alot.

My SVT is under re-construction at the moment and I drove another members SVT on the Stock setup ... and my goodness every turn I was on 3 wheels. Lots of roll.

Okay ... what about checking your Injectors? Have you cleaned them lately? Be surprised how much better they run with a bit of cleaning.

-Ray-

I bought the SVT set up from the ford racing site. IDK if that is exactly the same at stock SVT or not, but it felt very stiff to me. It is drastically stiffer than stock SE focus. I did a bottle of STP injector cleaner in a full tank. someone else suggest that I do another one on a half tank but I wasn't sure if that was a good idea or not.

tukaniSVT 05-19-2011 12:59 PM

I believe you want to do that once every so often not back to back.

Yeah the Ford Racing site SVT Package is the same as the stock set up. If you bought the Saleen package though ... that would be the Eibach Pro Kit.

Well ... the only other thing that comes to mind is your tune. My buddies Mazda Speed3 ... the stock tune is pretty restrictive during AutoX. When he takes a turn hard, it actually cuts off the turbo and turns on the TC then when he levels out ... turns back on the Turbo and lets him slide again.

-Ray-

lexington523 05-19-2011 01:06 PM

Quote:

Originally Posted by tukaniSVT (Post 3676658)
I believe you want to do that once every so often not back to back.

Yeah the Ford Racing site SVT Package is the same as the stock set up. If you bought the Saleen package though ... that would be the Eibach Pro Kit.

Well ... the only other thing that comes to mind is your tune. My buddies Mazda Speed3 ... the stock tune is pretty restrictive during AutoX. When he takes a turn hard, it actually cuts off the turbo and turns on the TC then when he levels out ... turns back on the Turbo and lets him slide again.

-Ray-

my next planned purchase is a handheld and a dyno tune so i hope you are right about that. I suppose running with a full tank untill then is no big deal


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