bosch 044 and 1.5litre swirl pot added - now overfueling
#1
Full Member
Thread Starter
Join Date: May 2012
Location: uk
Posts: 66
Likes: 0
Received 0 Likes
on
0 Posts
bosch 044 and 1.5litre swirl pot added - now overfueling
ok to start I no allot are gona say why have that setup on a mildly tuned fc turbo, it avoids airbubble in transitions and makes a world of difference
car runs sweet as no problems fitted my bosch 044 and 1.5litre swirl pot rigged up the lines relay etc and now my car idles very lumpy sumtimes revs so slow it cuts out and afrs go richer than ever even on driving afrs are richer than they were before the second pump was rigged in
my question is even with this setup the fpr should regulate the fuel going in, so even if I had 50 fuel pumps the same amount of fuel as standard would be going in due to It being regulated by the fpr
does it mean by me adding another fuel pump that this is high lighting a week fpr ( known to cause fuel leeks and set fire to rx7s) that is cant hold the pressure
no leeks can be seen by eye
any info much appreciated
my setup is perfect bar this issue
car runs sweet as no problems fitted my bosch 044 and 1.5litre swirl pot rigged up the lines relay etc and now my car idles very lumpy sumtimes revs so slow it cuts out and afrs go richer than ever even on driving afrs are richer than they were before the second pump was rigged in
my question is even with this setup the fpr should regulate the fuel going in, so even if I had 50 fuel pumps the same amount of fuel as standard would be going in due to It being regulated by the fpr
does it mean by me adding another fuel pump that this is high lighting a week fpr ( known to cause fuel leeks and set fire to rx7s) that is cant hold the pressure
no leeks can be seen by eye
any info much appreciated
my setup is perfect bar this issue
#2
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,835
Received 2,604 Likes
on
1,847 Posts
the stock pressure regulator has a pretty limited range, it cannot handle a big fuel pump, or much boost
#3
Rotary Freak
iTrader: (7)
You had just the stock pump before? Like j9fd3s is saying the stock fpr is limited. Works great when used with stockish pumps but when you try to use a high flow pump they tend to get over run and cant flow enough to properly regulate flow. What does your fuel pressure look like? Remember your fuel pressure regulator is last in the system before it returns to your swirl pot or fuel tank. I would go back to the stock system for the time being until you can properly control your fuel pressure
#4
Full Member
Join Date: Nov 2011
Location: orange, ca
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
Where is your return line sending the fuel? If directly to the swirl pot, do you have a line that will alloww any overflow to "vent" back into the gas tank? What size line are you running from the new fuel pump vs. The size of your return line? If there is anything restricting flow on the return line, it will cause issues with the pressure side.
Thread
Thread Starter
Forum
Replies
Last Post