Primary Fuel Rail
02-21-2004, 10:15 PM
#1
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Thread Starter
Join Date: Nov 2003
Location: Hell (Colorado School of Mines)
Posts: 521
I heard that the s5 primary fuel rail is much safer than the s4 as the PD normally doesnt break on the s5. I got the s5 rail put on the car but now the car stalls at about 1200 rpm. 
Do I have to ajust the mixture for the new fuel rail? I also hear a loud hissing sound from the intake manifold. I cant find any vacuum leaks. Any idea what could cause this?
Thnx
Andy
Thnx
Andy
02-21-2004, 11:24 PM
#2
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Join Date: Jun 2003
Location: Culpeper, VA
Posts: 572
Hissing from the intake manifold
sounds like a vaccum leak to me.
That could be why you are dying at 1200. Your motor is getting too much air and it can't compinsate that by adding fuel since the air ins't being measured through the AFM. So in other words, lots of air + no fuel = no run
sounds like a vaccum leak to me.
That could be why you are dying at 1200. Your motor is getting too much air and it can't compinsate that by adding fuel since the air ins't being measured through the AFM. So in other words, lots of air + no fuel = no run
02-22-2004, 10:26 AM
#4
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Join Date: Dec 2002
Location: Wayne, NJ
Posts: 4,837
shoulda just got a new pd for your rails.
with s5's you have to replace the whole rail to replace the PD when it goes out, which is why ive had a leaky PD forever, i dont feel like replacing the whole rail to fix it.
i was trying to switch to s4 t2 rails forever but now ive got a full custom fuel setup going in so thatll fix those problems.
kevin.
with s5's you have to replace the whole rail to replace the PD when it goes out, which is why ive had a leaky PD forever, i dont feel like replacing the whole rail to fix it.
i was trying to switch to s4 t2 rails forever but now ive got a full custom fuel setup going in so thatll fix those problems.
kevin.
02-22-2004, 11:02 AM
#6
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Join Date: May 2002
Location: California
Posts: 22,465
Originally Posted by ColinRX7' date='Feb 22 2004, 08:41 AM
Is there a generic PD you can buy anywhere and adapt it? I don't feel like spending like $150 on a stock FC PD..
02-22-2004, 11:06 AM
#7
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Join Date: Apr 2003
Location: Schofield Barracks, HI
Posts: 2,259
Originally Posted by teknics' date='Feb 22 2004, 12:26 PM
shoulda just got a new pd for your rails.
with s5's you have to replace the whole rail to replace the PD when it goes out, which is why ive had a leaky PD forever, i dont feel like replacing the whole rail to fix it.
i was trying to switch to s4 t2 rails forever but now ive got a full custom fuel setup going in so thatll fix those problems.
kevin.
with s5's you have to replace the whole rail to replace the PD when it goes out, which is why ive had a leaky PD forever, i dont feel like replacing the whole rail to fix it.
i was trying to switch to s4 t2 rails forever but now ive got a full custom fuel setup going in so thatll fix those problems.
kevin.
2 on the rail....5 to get the uim off
02-22-2004, 11:14 AM
#8
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Location: Wayne, NJ
Posts: 4,837
Originally Posted by FrestyleFC3S' date='Feb 22 2004, 12:06 PM
its 7 bolts in total to replace the primary rail bro
2 on the rail....5 to get the uim off
2 on the rail....5 to get the uim off
kevin.
02-22-2004, 08:22 PM
#10
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Thread Starter
Join Date: Nov 2003
Location: Hell (Colorado School of Mines)
Posts: 521
I heard that the PD on the s5 pretty much never goes and the s4 was practically guaranteed to go. If not, maybe Ill just go back to the s4. I dont know what the fuel rail could do to the intake but thats my only guess.
Thnx
Andy
Thnx
Andy