i have a 99 discovery II that i already replaced the plugs and wires a few months ago. it was running great. now it runs like crap. has no acceleration take forever to get up to speed. more gas you give it the slower it goes. any thoughts or ideas i'm all ears

thanks

 

Need some info.
How many miles on the truck, who's plugs and wires are you using, what octane gas, do you have any check engine lights on?
Mike