I took my 88 supra to the dealer ship and they fixed the idle problem.afterwards i changed the oil and got a bottle of restore to mix with the oil.now the idle started acting up when i put a tablespoon in each cylinder hole where the spark-plug goes.I put the spark plugs back and the throttle body back together,turned her on and she stalled a couple.Alot of smoke was coming out the muffler for a half an hour to it burned away..i did noticed that i did'nt have anymore oil on my spark plugs, but after that she just can't idle on her own.Constantly i have to keep my foot on the gas if not she will stal.could soome body help::dunce:: ::dunce::