Platinum plugs
 

I've just changed my plugs (Accord 1990) for bosch platinum. This because when you stepped on the gas it did not respond quickly, but after the plugs change things have been worse. Any idea of what the problem could be? Injectors were recently cleaned, also air and gas filter.
Are platinum not recommended for this car? Or they made some problem more apparent and something else needs to be fixed?

Do a search of the forums for these plugs. You shouldn't have major problems with them, but they're not good for your Accord. Are they gapped correctly? You'll get better performance from stock NGKs.

Plat 4s, dont suite japs at all..

bosch doesn't suit japanese cars at all. you should take your money back, and get some NGK V-powers. Plus the v-powers are made out of copper which is more conductive than the platinum, (although vpower's don't last as long)