Author Topic: Tailgate doesn't lift fully  (Read 5007 times)

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Offline terryjb

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Tailgate doesn't lift fully
« on: November 08, 2016, 05:48:35 PM »
When I open the tailgate on my Mazda 3 Takara, it lifts up so far and then stops half way.  If I then give it another push, it lifts the rest of the way and fully opens.

I have purchased and fitted two new gas struts (and greased the ball connectors), but the problem is still there.

As I have only owned this car for a short time, I'm just wondering if they are all like this or if they should normally lift fully once the tailgate is released.

Is it possible to buy more powerful struts?

All other hatchbacks I have driven have opened fully.

Thanks in advance.

Terry

Offline Newbs

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Re: Tailgate doesn't lift fully
« Reply #1 on: November 09, 2016, 09:08:35 PM »
Have you lubricated the boot hinges ?
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Offline terryjb

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Re: Tailgate doesn't lift fully
« Reply #2 on: November 10, 2016, 10:40:34 AM »
Hi, Yes sprayed liberally with WD40...

Offline terryjb

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Re: Tailgate doesn't lift fully
« Reply #3 on: November 10, 2016, 10:40:31 PM »
Just to make sure, I removed the struts and tried the tailgate. It opens smoothly with no sign of resistance from the hinges, so I'm pretty sure the hinges are OK.

Offline Willpower

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Re: Tailgate doesn't lift fully
« Reply #4 on: November 10, 2016, 11:42:30 PM »
Come on all you hatchback owners, some one must have something to say about this.  Sounds to me like some form of geometric lock going on.


I don't have the problem so I can't help.....  ((snigger)) 
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Offline E.T.

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Re: Tailgate doesn't lift fully
« Reply #5 on: November 11, 2016, 06:54:16 AM »
I don't have that problem only a couple of comments that may help...

Firstly have you checked the spec of the struts you fitted and are these the correct ones?  Euro parts are any motor factors should be able to tell you.

I would not advocate using WD 40 as a lubricant, its better than nothing, but really you want grease.  I use (I'm a biker too) motorcycle chain lube for several reasons

# it has solvents that make it very thin, so it penetrates really deeply, but these evaporate off to leave a thicker grease

# its high temperature (not relevant on a tail gate but useful in other places}

# its designed for use around seals (bike chains have sealed rollers these days) without damage

# supplied with a fine pipe nozzle for precise application and easier to get into places

My thought is that the tail gate might be free to move when you lift by hand , but with the pressure / push coming from the strut coming from a particular direction there may be stiff point (maybe even slight brinelling on the hinge surface) causing not stiffness per se, but requiring more force to get past that point hence a proper lubricant maybe better.
« Last Edit: November 11, 2016, 10:15:32 AM by E.T. »
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Offline StevenRB45

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Re: Tailgate doesn't lift fully
« Reply #6 on: November 11, 2016, 09:01:20 AM »
Looking at the thread it would depend where it stops. There is a balance point where if you put one finger under and lift it'll go to the top or gently press down and it'll lock and latch.

Here:


It had never struck me as a fault..all the hatchbacks I've had have had similar stops the door fully opening if not latched properly.

Obviously if it's stopping further up then you do have an issue.
« Last Edit: November 11, 2016, 09:32:12 AM by StevenRB45 »

Offline terryjb

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Re: Tailgate doesn't lift fully
« Reply #7 on: November 17, 2016, 10:01:55 AM »
Problem has got worse... 

StevenRB45:  It stops about half way similar to your picture, but when I lift it any further, it stops at the point I stop lifting.

E.T.:   I only used the WD40 in case the hinges were stiff.

I have asked the strut suppliers if there is a stronger strut available.  After explaining the problem, they asked me to send a video of the problem. On receiving the video, they agreed there was a problem and asked me return them for testing, so will let you know what happens.

Offline terryjb

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Re: Tailgate doesn't lift fully
« Reply #8 on: November 19, 2016, 02:41:36 PM »
Update:  The struts have been returned after being upgraded to a higher pressure and all is OK now.  Many thanks to the guys at SGS Engineering in Derby.


Offline E.T.

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Re: Tailgate doesn't lift fully
« Reply #9 on: November 22, 2016, 02:34:39 PM »
Result.

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Re: Tailgate doesn't lift fully
« Reply #9 on: November 22, 2016, 02:34:39 PM »