Honestly I'll probably keep mine on the lower lock going forward in case I run into issues again, at least for a bit. BTW why don't they have more than 2 locks? Seems like it would have been real easy and cost almost nothing to add another locking position.

I'll also try to keep this thread updated with resolution in case some poor soul has the same issue in the future.

 

Get one of these at Harbor Freight with a max lift to 48", more than enough to reach the QJ height. : https://www.harborfreight.com/48-in-...ack-58395.html

 

I love my quick jack, but this is the nightmare scenario. Please let us know what you figure out.

 

I don't believe I'd be able to get that harbor freight jack under my frame rail without being against the car.

Honestly I agree that this does seem like a nightmare scenario, but honestly I don't regret my QJ purchase (not yet at least). It will depend how help QJ support is if we can confirm the one frame needs to be replaced. That said, it's an incredibly useful tool.

 

To the OP: I suggest you replace first the parts QJ thinks are bad. If you jack that problem side and release the hold you may not have enough pressure on that side to smoothly lower and it could be a tough problem...

 

I definitely will replace the part before I try anything, but I'm also trying to plan for if it doesn't fix the problem. Since I can eliminate that part from the equation by switching hoses, it definitely doesn't seem to be it. My guess is the support person I talked to heard me say one valve stayed opened and ignored the part where I said it resolved itself and that I can isolate that part out.

What I'm wondering is if maybe some of the fluid in the ram somehow slowly drained back into the tank over the two week period because that fitting was bad so now there is less fluid in the one side. I would think when the fittings are connected, they are open so that wouldnt be the issue, but I dont know.

 

It is good practice to lower the system pressure by draining hydraulic fluid while the lift is securely up. I always do that and both hydraulic cylinders release the fluid. I wonder if the Relief Valve or the valve regulating both cylinders is not working well. There are maintenance procedures to check those (see their YT channel). QJ support is not good. You may need to escalate the problem up the chain and get someone on the phone who knows their stuff.

Also... do not worry about the air tanks and Schroeder valves. Nothing to do with this.

 

Theorectically the locks are an extra safety measure, the pressure in the system should keep the frames up until you push the down button. I know most of us use the locks--I do.

Your plan makes sense since the issue is one frame won't raise unless QJ has another solution that you can try. I don't know if you could remove the bolt that attaches the locking bar to the frame and if that is advisable.

 

I did lower the frames down on the locks to depressurize the system, but the there should still be hydraulic fluid in them, it just wouldn't be pressurized. My thought was maybe if there was a bad fitting the fluid could have slowly leaked out of the ram back into the tank due to gravity, the pump/tank being on the floor and the ram being in the lifted position. I was just trying to speculate on what could have happened.... it went up fine, lowered on locks, 2 weeks later one side is inoperable. Honestly this issue has been plaguing my thoughts for the last 5 days as I try to figure out how I'm going to get this down. There is an answer for everything, just trying to figure out what the best answer is.

 

I advise serious caution. There is questionable advice on this thread. Be careful! Call QJ, escalate the call and get answers. I suspect it is a component in the controller. I would not use an external jack as you are planning; no way.

 

QJ's mechanical locks are the sole level of safety. The pressurized struts are not safe by themselves - QJ states that.

 

somewhat related - here's a must read thread about an experience I had with the QJ using the double stacking of the rubber blocks, which QJ says is good. It isn't. Read this: Quick Jack PSA - Rennlist - Porsche Discussion Forums.

Also, I had problems with mine too with the leaking connects and fixtures. They ended up sending me new hoses, quick connects, schrader valves, and so forth. It is a good tool, but the quality leaves much to be desired. I honestly use my liftbars whenever I can instead. They get the car up much faster, they are rock solid stable, and go just about as high. Also, side access is easier with the liftbars. They work on the 928/ Boxster/ 996 and 997.

 

Sensible advice.

 

Good PSA. I almost had the same thing happen with my Q5 when I tried double stacking them. My rubber blocks were squishing down to the point of causing the shifting. Luckily I had my floor jack handy to get under the diff to stabilize the car. Then I was able to lower all of them down in unison without issue. If someone had breathed wrong in the garage, the car would have fallen off the blocks sideways causing the QJ's to tip sideways. Needless to say I haven't stacked those blocks since.

Other than that, I love my QJ. Rock solid when you don't stack the blocks.

 

I have used and lent my Quick Jacks to friends countless times and never an issue . I maintain them and check the cyl pressure from time to time and they always work as expected. As mentioned some of the connections aren't the greatest but I have never had to replace anything in my 2yrs of ownership.