90 XJ Won't start low (15psi) fuel pressure
02-06-2005, 11:37 PM
#1
Guest
Posts: n/a
90 XJ Won't start low (15psi) fuel pressure
It all started when I smelled gas, a look under the hood revealed some
gas leaking where #1 injector enters the intake. I replaced all o rings
in the rail, it wouldn't start. a depressed shraider valve showed low
pressure in the rail so I replaced the regulator still low pressure and
no start. I installed a new pump, still no start. I purchased a gauge
and after turning on the key it shows about 15psi and bleeds down to
0psi in a few seconds. I have pinched off the return line and it still
only gets to 15psi with a fast bleed down. I have turned the key off
and on 5 or 6 times with the same result. The pump comes on for about 5
seconds every time I cycle the key. Every thing I have read points to a
faulty check valve in the pump, did I get a bad one off the shelf?
gas leaking where #1 injector enters the intake. I replaced all o rings
in the rail, it wouldn't start. a depressed shraider valve showed low
pressure in the rail so I replaced the regulator still low pressure and
no start. I installed a new pump, still no start. I purchased a gauge
and after turning on the key it shows about 15psi and bleeds down to
0psi in a few seconds. I have pinched off the return line and it still
only gets to 15psi with a fast bleed down. I have turned the key off
and on 5 or 6 times with the same result. The pump comes on for about 5
seconds every time I cycle the key. Every thing I have read points to a
faulty check valve in the pump, did I get a bad one off the shelf?
02-07-2005, 12:00 AM
#2
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Sounds like a leak between the rail and the fuel pump!
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
02-07-2005, 12:00 AM
#3
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Sounds like a leak between the rail and the fuel pump!
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
02-07-2005, 12:00 AM
#4
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Sounds like a leak between the rail and the fuel pump!
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
So did you check the level of fuel in the gas tank?
Could it be that the fuel pump leaks out fuel at it's output hose?
************** New Hose????? ************ Clamp on tight?
Do you have good power going to the fuel pump?
How is that ballast resistor near the air cleaner box?
<JRK58@MSN.COM> wrote in message
news:1107751026.227587.72270@c13g2000cwb.googlegro ups.com...
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
>
02-07-2005, 12:15 AM
#5
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Thanks for your reply, yes I have fuel but I didn't think to check the
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
02-07-2005, 12:15 AM
#6
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Thanks for your reply, yes I have fuel but I didn't think to check the
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
02-07-2005, 12:15 AM
#7
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
Thanks for your reply, yes I have fuel but I didn't think to check the
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
upper clamp and I didn't change the hose. The pump does fire up ok and
I did clean the connectors on the ballast but that wouldn't cause the
fast leak down would it?.Thanks again, I will be checking that hose
connection tommorrow.
02-07-2005, 12:21 AM
#8
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
The fuel pump automatically shuts off after about three seconds
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
02-07-2005, 12:21 AM
#9
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
The fuel pump automatically shuts off after about three seconds
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
02-07-2005, 12:21 AM
#10
Guest
Posts: n/a
Re: 90 XJ Won't start low (15psi) fuel pressure
The fuel pump automatically shuts off after about three seconds
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
with each ignition on, sequence, as you know. Did you cycle it at least
ten times to get the pressure up to about fifties pounds and the air
purged back to the tank? If the regulator not holding, then as you
suspect it's not good. Of course, the new pump could be at fault, if it
can't pump ninety pounds with the return line clamped.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
JRK58@MSN.COM wrote:
>
> It all started when I smelled gas, a look under the hood revealed some
> gas leaking where #1 injector enters the intake. I replaced all o rings
> in the rail, it wouldn't start. a depressed shraider valve showed low
> pressure in the rail so I replaced the regulator still low pressure and
> no start. I installed a new pump, still no start. I purchased a gauge
> and after turning on the key it shows about 15psi and bleeds down to
> 0psi in a few seconds. I have pinched off the return line and it still
> only gets to 15psi with a fast bleed down. I have turned the key off
> and on 5 or 6 times with the same result. The pump comes on for about 5
> seconds every time I cycle the key. Every thing I have read points to a
> faulty check valve in the pump, did I get a bad one off the shelf?
