odd fuel starvation issues on left turns even with surge tank
08-20-18, 09:55 PM
#1
odd fuel starvation issues on left turns even with surge tank
just thought i'd share this if anyone else have any ideas. i've track my car with this set up for over 30 track events. it used to only starve when just start entering the track if its a left turn entrance, after that all else good, so i didn't bother diagnosing it.
now recently its happening all the time at the track now during left turns. my set up is a 034 motorsports external surge tank mounted outside under vehicle with a bosch 044 pump. in tank fuel pump is a aeromotive stealth 340. fuel filter is a relocated fuel lab filter that was just cleaned. i just replaced the surge tank pump few days ago, and still have this problem last weekend. voltage on the pumps are 12.6 with key on, and has its own separate relay to battery. i also noticed its worst when its hot outside. any suggestions? my guess would be to replace in tank pump next?
my car set up is a fd single turbo efr 7670, 500 primary's, 1300 secondaries
now recently its happening all the time at the track now during left turns. my set up is a 034 motorsports external surge tank mounted outside under vehicle with a bosch 044 pump. in tank fuel pump is a aeromotive stealth 340. fuel filter is a relocated fuel lab filter that was just cleaned. i just replaced the surge tank pump few days ago, and still have this problem last weekend. voltage on the pumps are 12.6 with key on, and has its own separate relay to battery. i also noticed its worst when its hot outside. any suggestions? my guess would be to replace in tank pump next?
my car set up is a fd single turbo efr 7670, 500 primary's, 1300 secondaries
08-22-18, 08:55 PM
#3
yup, in-tank pump on stock hanger and stock location. but wiring from pump is not stock, power and ground goes up separately through the bulkhead with nylon bulkhead fittings. i shall try to get some pics when i remove it for new pump. its just weird that is happening now everytime since 2015, before it was tolerable at the track, now car is totally undriveable, makes me want to go back to stock set up without surge tank.
08-24-18, 03:41 PM
#4
Double check all your connections that are submerged in fuel. If you don’t have any then look at the pump sock or pickup points for issues. . When I tried to run an in-tank surge tank the hose from the pump to tank kept coming loose and sucking air driving me crazy. I went back to the later-spec stock sump cover and hydramat stuffed in there.
What tires do you run and what level is the fuel when starving?
What tires do you run and what level is the fuel when starving?
08-27-18, 01:48 PM
#6
Double check all your connections that are submerged in fuel. If you don’t have any then look at the pump sock or pickup points for issues. . When I tried to run an in-tank surge tank the hose from the pump to tank kept coming loose and sucking air driving me crazy. I went back to the later-spec stock sump cover and hydramat stuffed in there.
What tires do you run and what level is the fuel when starving?
What tires do you run and what level is the fuel when starving?
im on street tires, 200 treadware requirement for my class i run in. i starve even at full tank now, especially when its hot. before it used to be just under a quarter tank and left turns.
09-04-18, 12:43 AM
#10
as of now, i replaced main intank pump with walbro 400, new surge pump bosh044, replaced both pump relays. now just need to do a shake down somewhere
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