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[lee4206]

Is it possible to re-lacquer  old paint? Reason I ask is whilst going over my mig  with the pressure washer 95% of the lacquer on the nsr quarter panel has just come off. 
 If it is possible what's the best way to do it.
Thanks

[Omega_Dan]

I would have thought you will need to flat it back, respray and re laquer.

[cem_devecioglu]

under normal conditions laquer must be applied while the paint is still wet so it can stick to..

although never seen an example of what you asked, in theory  thick layer of laquer (I doubt for your case)  can be sanded and laquered again but sanding traces may be visible (depends on the color) and still wont be strong as done on a wet paint..

so imo risky job and most painters wont accept.. :-/

ps : definitely not recommend for dark colors..

pps: assuming metallic paint..

[lee4206]

Kind of as i thought.  Mine is star silver  and looking at it its had a blow over at some point as the lacquer has come off completely and in places the base colour has come off but you can see it still has lacquered paint under the base coat.    Do you think it might be possible to sand off the base coat back to the original finish(fingers crossed it was only blown over to blend to doors and not damage ect) It's going to need a respray anyway so I don't think I've got anything to lose but if the original finish is ok  then its a result.

[bluey]

You got me scratching my head a bit there.  I know it was many years ago but when I worked in a bodyshop we never lacquered a car until the final basecoat had gone through a bake and flashed off.  Similarly I have had a couple of motors given a part blow-in of clear and no-one refused the job.  I have however had an instance where it wasn't done properly and it began to peel, but this was down to it being a rush job on the cheap using knacker lacquer. 

[bluey]

Ah, did I read correctly that you could see lacquer under a base coat?  That sounds to me like a quick job has been done as you shouldn't really put base over old clear.

[cem_devecioglu]

Kind of as i thought.  Mine is star silver  and looking at it its had a blow over at some point as the lacquer has come off completely and in places the base colour has come off but you can see it still has lacquered paint under the base coat.    Do you think it might be possible to sand off the base coat back to the original finish(fingers crossed it was only blown over to blend to doors and not damage ect) It's going to need a respray anyway so I don't think I've got anything to lose but if the original finish is ok  then its a result.

seems like there was a color matching problem previously :-/ so even if you succesfully sand the above layers you will end up with the previous problem.. but at least you will have the original paint.. although will be tedious try with 2000 grid old sandpaper with lots of water and stop every 3-4 minutes and check the paint state.. after you finished cleaning non-original layers take a close picture and send it here imo.. at that point either you can polish the surface or decide something different.. 

[cem_devecioglu]

You got me scratching my head a bit there.  I know it was many years ago but when I worked in a bodyshop we never lacquered a car until the final basecoat had gone through a bake and flashed off.  Similarly I have had a couple of motors given a part blow-in of clear and no-one refused the job.  I have however had an instance where it wasn't done properly and it began to peel, but this was down to it being a rush job on the cheap using knacker lacquer. 

quality painters here (which is rare as usual) never accept those kinds of jobs for two reasons.. risky -trouble job not worth for little pennies.. cheap painters will do everything but wont accept any responsibility. and the results will be as expected.. :-/

[lee4206]

Ah, did I read correctly that you could see lacquer under a base coat?  That sounds to me like a quick job has been done as you shouldn't really put base over old clear.

Yes in a couple of places I can see the original lacquered base coat. The fact that the lacquer has come off tells me that is was a rubbish job.

[Omegatoy]

lol putting new laquer over old paint is a "quick sell the car "bodge!! it can be done as you have found out but it wont hold forever!!!