New fuel pump is in - no fuel at the fuel rail. UPDATE - tank is frozen
#1
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From: Up Nort
New fuel pump is in - no fuel at the fuel rail. UPDATE - tank is frozen
Just installed a used S4 pump into my 81, turn on the battery it spins up just fine. I check the fuel rail by taking off that nut with the ball bearing, 100% dry (did this after turning the pump off).
I pull the feed line to the fuel pump, also dry. Turned the battery on, the pump is spinning the correct direction, I feel suction.
My "helper" turned on the battery as I watched the fuel rail with the above nut removed. No fuel.
Is there air in the system? If so, how do you purge it?
EDIT - Tim Murphy and Lag saw this post, gave me a call. After blowing on the fuel line from the tank to see if there was some sort of blockage - found ice in the line. Damn thing is frozen.
Will dumping in isopropyl alcohol melt the frozen gas / water or is that to prevent a tank from freezing.
I pull the feed line to the fuel pump, also dry. Turned the battery on, the pump is spinning the correct direction, I feel suction.
My "helper" turned on the battery as I watched the fuel rail with the above nut removed. No fuel.
Is there air in the system? If so, how do you purge it?
EDIT - Tim Murphy and Lag saw this post, gave me a call. After blowing on the fuel line from the tank to see if there was some sort of blockage - found ice in the line. Damn thing is frozen.
Will dumping in isopropyl alcohol melt the frozen gas / water or is that to prevent a tank from freezing.
Last edited by hacker-pschorr; 12-10-2005 at 04:35 PM.
#3
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From: Up Nort
Originally Posted by Airflite40
I think i got frozen fuel too, what can we do?
I now have fuel flowing - still does not start. Cylinders are not receiving any fuel via the injectors. Not sure what I wired wrong or what I possibly blew in the injection system trying to jump start the fuel pump. Yippee.
#6
Hey, I ALMOST feel guilty. Here in Puget Sound country today
it was clear, in the high 40's, low 50's. I went out to the stable
and the little 924 said "Take me, take me". The shark said "It's
ok, take the little whinner out for a run".
So I drove her over to the P.car dealer for a Team Seattle
(24 Hr Daytona)-Children's Hospital promotion. Looked at the
new Cayman (I'll keep my shark, thanks), scarfed the dealer's
food, guzzled their coffee, in general enjoyed the event. ;>
Oh, by the way, get your isopropyl at any drug store - it's
rubbing alcohol. Keep your fingers warm.
G'luck.
it was clear, in the high 40's, low 50's. I went out to the stable
and the little 924 said "Take me, take me". The shark said "It's
ok, take the little whinner out for a run".
So I drove her over to the P.car dealer for a Team Seattle
(24 Hr Daytona)-Children's Hospital promotion. Looked at the
new Cayman (I'll keep my shark, thanks), scarfed the dealer's
food, guzzled their coffee, in general enjoyed the event. ;>
Oh, by the way, get your isopropyl at any drug store - it's
rubbing alcohol. Keep your fingers warm.
G'luck.
#7
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From: Up Nort
Originally Posted by FlyingDog
Could you be injecting water or have frozen water elsewhere in the system? Are you sure you're getting pressure at the rails now?
I'm double checking my wires. Maybe I crossed the two sensors on the coolant bridge - not sure if that would prevent the car from starting though. This sucks.
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#8
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From: Up Nort
Originally Posted by macreel
Oh, by the way, get your isopropyl at any drug store - it's
rubbing alcohol. Keep your fingers warm.
rubbing alcohol. Keep your fingers warm.
#10
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From: Up Nort
Originally Posted by Jim_H
Are your injectors making any noise?
#11
Injectors frozen... Stupid idea probably but...
Originally Posted by Hacker-Pschorr
I cannot tell, lost my helper so I have no one to crank the engine while I listen. Fuel should be making it into the cylinders via the cold start valve as well. Like I said before, #1 spark plug is bone dry. Not sure what would cause both the injectors and cold start injectors to not fire.
#12
Jumper your fuel pump relay and get the fuel recirculating - do not try to start: take your trusty hair dryer and warm up the injectors. If you have no hair, safe but slow heat can be had from a 60-100W light bulb either side of the manifold.
For anyone getting isopropyl alcohol ( from any drugstore), get the 99% stuff - NOT the stuff labeled 'rubbing alcohol - it has 5%+ water in it .... somewhat defeats the purpose. A couple of ounces will generally do the job.
For anyone getting isopropyl alcohol ( from any drugstore), get the 99% stuff - NOT the stuff labeled 'rubbing alcohol - it has 5%+ water in it .... somewhat defeats the purpose. A couple of ounces will generally do the job.
#13
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From: Up Nort
I'm really nervous cranking it over too much - this car has not run since March (head gasket job that took way too long). I did attach a drill to my fuel pump to oil everything before attaching the timing belt.
If I hook up a multi-meter to the injector leads, what am I looking for to see if they are receiving a signal to open?
If I hook up a multi-meter to the injector leads, what am I looking for to see if they are receiving a signal to open?
#14
I don't know if a digital multimeter will respond fast enough to show injector pulses. An analog one should bounce if you're measuring across the injector. Remember, the injectors get 12V all the time (test that?) and are grounded by the L/LH to fire.