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Bubbling front bumper

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GlennyGills
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Bubbling front bumper

Postby GlennyGills » Fri Mar 29, 2019 5:58 pm

Hi,
This problem has been growing for a while now. The paint is blistering on the front bumper. I thought it was fibreglass but I realise it is plastic. I don't have any idea why it is occurring.

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IMG_20190329_162321.jpg (303.75 KiB) Viewed 1183 times

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IMG_20190329_162304.jpg
IMG_20190329_162304.jpg (287.15 KiB) Viewed 1183 times


Does anyone know what the problem is. I guess I am now looking for a replacement front bumper.


John
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust
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blackyb
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Re: Bubbling front bumper

Postby blackyb » Fri Mar 29, 2019 10:11 pm

Not seen it on an MX yet but on a Peugeot.

We rubbed it down and repainted it, no idea why it blistered tho.

Was suggested it was down to a poor plastic mix and paint reaction. Sure some spray dude will along to give you a more definitive answer.
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Mazda Mender
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Re: Bubbling front bumper

Postby Mazda Mender » Fri Mar 29, 2019 10:35 pm

It is defo moisture....either a skim of filler or it is trapped moisture from being sprayed...as she lived under a cover?
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This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

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John&Luke
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Re: Bubbling front bumper

Postby John&Luke » Sat Mar 30, 2019 1:05 am

Agree that it likely due to moisture. Has the nose been repaired recently?
1996 Mk1 Classic Red 1.6 sorted
1995 Mk 1 White 1.6 in need of TLC
2015 Mk1 1.8 Exocet Mk1 on steroids
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Re: Bubbling front bumper

Postby GlennyGills » Sat Mar 30, 2019 9:24 am

The whole car was resprayed about 4-5 years ago. This started showing about two years ago. The car is garaged generally,not under covers.
The problem is that if I put it in to get repaired, they will only know what's wrong after they rub it down.
I guess the question is,Is this just a Paint problem or a problem with the bumper? What can go wrong with the bumper?
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John&Luke
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Re: Bubbling front bumper

Postby John&Luke » Sat Mar 30, 2019 10:39 am

GG, it’s very hard to tell from the photos, typical (in my little experience) paint can micro blister any time after painting. This is normally due to moisture in the primer/paint. Having said that the bubbles look to big for that. If it was mine I would strip the bumper right back to the plastic. Repaint with a etch primer, prime (with plasticiser added) and then top coat.

Sorry you properly didn’t want to hear that but, a spot repair IMO would be a false economy in the long run and I would always be worried about future break through.

Happy to met up and take a look if that helps.

Nose cones are pretty cheap so you could get a spare and prep it yourself and ask your painter to then paint it off the car and then fit. That would be fun and very satisfying.
1996 Mk1 Classic Red 1.6 sorted
1995 Mk 1 White 1.6 in need of TLC
2015 Mk1 1.8 Exocet Mk1 on steroids
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Re: Bubbling front bumper

Postby Mazda Mender » Sat Mar 30, 2019 12:12 pm

I agree
Just live with it for the minute until funds allow...there is a line starting of blisters ..so something's not right under neath but it is defo moister....
I would do as john says ...get a s/hand nose cone and have it done,then just swap them over,sorry buddy no easy cure for those blisters, i can also see where the paint as sunk and what looks like over spray on the badge from masking up rather than removing the badge? or is it reflection?
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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GlennyGills
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Re: Bubbling front bumper

Postby GlennyGills » Sat Mar 30, 2019 2:06 pm

Second hand one it is then. Thanks for the help.

Cheers
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust

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