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Old 09-24-2006, 05:44 PM   #1
scoobie1
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Default What would cause my pump to not pump?

I was double checking everything on my car today and went to make sure the meth system was primed like its supposed to be. Set the UTEC to turn the system on at idle, unplugged the line from the motor and stuck it in a catch can, and fired up the car. Nothing. Double checked the meth tank, yep its full. I put my hand on the pump, sure enough it was running. I unplugged the line coming out of the pump to make sure it wasn't a solenoid issue, but there is nothing coming out of the pump itself. I unplugged the line from the tank to the pump & blew it out to make sure the was no blockage (I have an inline filter anyway). Any other ideas why the pump won't suction meth from the tank?
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Old 09-24-2006, 06:32 PM   #2
dibblejr
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Your catch can system may be the problem. The best way to test is to disconnect your tube from the nozzle and route it to the windshield. Take the car for a drive and you should have spray.
Remember your pump line should be lower than the tank feeding line. Your catch can tubes probably run to high for the pump to draw the fluid.
Try my method, but make sure the the pump is lower than the source. I had to mount my pump upside down to accomplish this.
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Old 09-24-2006, 08:46 PM   #3
hippy
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You need to be past 0tps(along with all the other paramterts for the spare solenoid) for the utec spare solenoid to work. You can spoof it a little by adjusting the tps calibration in utec parameters, but that would make it harder to turn the injection off then on. Also make sure that you're not trying to run too many amps through the utec. Ie- If you're turning the pump and solenoid on with the utec ground, the ground should power a relay which in turn powers the pump and solenoid.

peace

Last edited by hippy; 09-24-2006 at 09:08 PM.
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Old 09-24-2006, 10:20 PM   #4
hotrod
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You didn't specify what kind of system/pump you have, but the shuflow style pumps can air lock if they get a big air bubble in the intake line.

If that is the kind of pump you have you need to release all pressure on the output side and or squeeze the inlet tube or pressurized the reservoir slightly to help the pump prime.

Larry
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Old 09-24-2006, 10:38 PM   #5
scoobie1
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Think meth could have ruined something inside the pump? I know it wasn't the catch can or a UTEC issue, I've done this numerous times in the past to check/bleed the system.

Hotrod - yes, its just the standard 150psi Shurflo pump
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Old 09-24-2006, 10:53 PM   #6
hippy
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haha. I totally missed that part about the pump running. Do you know which pump you're using? From what I heard, viton(material used in many pumps) swells a lot when it comes into contact with alc. I dunno if/how this would effect the pump, but from what I hear it's good to get a pump that uses other materals when running alc. Could have nothing to do with your situation, kinda like my utec comment.

peace

Last edited by hippy; 09-24-2006 at 11:09 PM.
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Old 09-24-2006, 11:22 PM   #7
scoobie1
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CMtech, which I'm assuming is coolingmist tech, has been PM'ing me. I have an older design pump, so I'm now pretty certain the meth I have been using for months now has damaged the seals inside. Oh well.
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Old 09-24-2006, 11:31 PM   #8
hotrod
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If you run high concentrations of Methanol it can cause the diaphram that sits between the pressure side and the switch to leak. This causes corrosion in the pressure switch ( if you have that style of pump).

If so you need a new switch and shurflo has a teflon diaphram and some seals made to better resist methanol. I just called their (shruflo) customer help line and they sent them to me no charge.

If you have bad seals on the switch it will be obvious the switch contacts where the wires plug in get corroded and are wet.

Larry
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Old 09-25-2006, 04:48 PM   #9
benw
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is 50% 50% ok to use with 150psi shurflo pumps from CM and other places?
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Old 09-25-2006, 05:30 PM   #10
dibblejr
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I have been running 50/50 with no problems. During my recent retune even after hours of testing and driving the pump operated flawlessly. My pump is mounted in the firewall right under the SPT intake and right next to the hole that is normaly blocked off.
I have the tank mounted to the SPT heatshield and I monitor my liquid temp with a temp gauge. It usually stays around 100-118 deg f lately. My entire intake track is so cold after the runs that my tuner made a pos comment about it.

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is 50% 50% ok to use with 150psi shurflo pumps from CM and other places?
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