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Old 11-10-2006, 02:25 AM   #1
benw
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Default Pump Failure People... did you damage anything?

For those of you who have had a pump die, did it do any damage to the motor? Please describe what tipped you off that the pump was dead and how it happened. I'm wondering if a single tiny LED is going to be my only indication, or if the power drop-off will be noticeable as well.
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Old 11-11-2006, 12:23 AM   #2
PolarisSnT
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Hasnt happened to me but if your tune is agressive with the alcohol on and the pump fails than catastrophic engine failure will happen. If the tune isnt so agressive and it fails, well you might get away with it. You would get a tone of knock and your CEL would flash, plus the car would fall on its face it this happens.
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Old 11-15-2006, 11:06 AM   #3
Brian-ATL
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I was going thru meth super fast. I used the test button while parked and saw the meth leaking from the pump. Didn't cause any issues for me.
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Old 11-15-2006, 11:14 AM   #4
FNR32
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Ive had a friend whos pump failed two times, both times he was just driving mildly to work and back and had no failure ( it's an evo but still). Rumor has it a certain type of meth ruins the seal and casues the failure. Don't know how true that is, but since he has switched brands he never had failure again.
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Old 11-15-2006, 02:30 PM   #5
PolarisSnT
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Well post up the names cause Id like to know if Im in danger. I run 100% denatured alcohol.
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Old 11-24-2006, 01:51 PM   #6
chibich
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bump. I want to get meth injection but I am afraid of this happening, so i would love to hear what other people have to say.
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Old 11-24-2006, 04:58 PM   #7
DonkeyPunch
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I have had two pumps fail on me. Both were from Snow Performance. The first one I knew it had failed, because I was getting knock, for seemingly no reason, so I hooked up a test/prime switch, and turned on the pump and it didn't do anything. Next pump just failed the other day. I had ordered a pump from cooling mist since they rate their pumps for meth. I was going to replumb my system in the next week or so, to use shorter hose runs, to retain a little more pressure. So driving around, and the car would run fine in
1,2,3 gears, but knock in 4th under boost. So I think the pump was on it's last leg, and couldn't push back the boost pressure, so I don't think mix was even getting to the nozzle. So put the cooling mist pump in, and waddaya know, I got some response and torque back I had been missing and not really noticed, and no more knock. This I can say if you do get a system, get a good safeguard. Also put a test/prime switch in. It is easy to wire. Just hook the switch up to a 12V power source, and then to the pump power wire. Everything will run normally, and your controller will still work. The controller doesn't apply power to the pump until it reaches the right boost pressure and turns on the pump. So the switch is just another way of sending power done the line to turn it on. Splice the switch in between the pump and controller, on the wire that the controller sends voltage to the pump with.

By the way, no engine damage that I can tell. I really pay attention to my safeguards, and CEL when I drive it. That is part of the game, yes alky is kinda risky, but if you are not willing to invest the money in a good safeguard system, and be attentive when you drive it, you are asking for trouble.

DP
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Old 11-25-2006, 11:40 AM   #8
benw
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thanks DP that is a good post.

I'll be running the Coolingmist 150 psi pump on 50-50 and will definitely use a test switch.
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Old 11-25-2006, 02:30 PM   #9
kn0bby8
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Quote:
Originally Posted by benw View Post
thanks DP that is a good post.

I'll be running the Coolingmist 150 psi pump on 50-50 and will definitely use a test switch.

Maybe a stupid question but how are you gonna know you are actually spraying when you hit the test button. Also, I don't think you can just spray when your at idle.
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Old 11-25-2006, 07:02 PM   #10
DonkeyPunch
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Quote:
Originally Posted by kn0bby8 View Post
Maybe a stupid question but how are you gonna know you are actually spraying when you hit the test button. Also, I don't think you can just spray when your at idle.
Do you have a LED to indicate when your pump is running. Usually there is a wire running out of your controller to hook to your LED. Usually it is just the power wire from the controller to the pump. You splice the pump in there. I also have 1/4" push to connect union in the middle of my supply line running from the pump to the injector that I can take the supply line apart to see if it is actually moving liquid.

Here are the fittings I am talking about:

http://www.fastenal.com/web/products...l.ex?sku=68424

With the LED and union, you can tell that your pump is healthy

DP
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Old 11-26-2006, 12:23 AM   #11
mindchatter
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I occasionally hit the test button on my controller while idling in the driveway....you can hear the engine bog a bit and smell the alcohol. Between doing that and visually inspecting the pump I feel very comfortable w/my system (SMC).

I had a pump issue once. Two of the screws holding the pump body together worked themselves loose and alcohol/water sprayed my engine bay. Realized it on the first boosted pull in 4th (UTEC flashed the CEL indicating knock), pulled over and checked the engine, went home and Loctited the screws in question and it's been fine for nearing 15,000 miles since.

As someone else mentioned.....you need to be VERY diligent in your maintenance/inspection. But IMHO it's an amazing modification w/regard to its benefits.
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Old 12-18-2006, 09:23 PM   #12
silver arrow
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Interested in pump failures and brands.
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Old 12-19-2006, 04:43 PM   #13
DonkeyPunch
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I have had two snow pumps fail on me in the span of about a year. I am now running a coolingmist pump. If this pump should happen to fail, I am going to aquamist.
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