My car hesitates a bit on cold starts (maybe 5 seconds) then smooths out. I am thinking to put a couple bottles of that injector cleaner in per fill up. Any suggestions if this will harm or assist. Cannot afford any expensive mistakes.

 

Toss is a product called "SeaFoam". It works wonders.

 

my guy said to never use those injector cleaners, the best way to clean them is to put the highest octane passible in(100 if avalable.) , and drive your car very hard. u will see a some grey/black smoke come out of your back side durring kickdowns and ur call will run better.

Mark

 

What's the science behind that exactly?

 

My INDY also suggested something like what Mark has suggested. But to add to it my INDY suggests running the highest grade of Chevron w/ Techron. This is a US product that has worked for me.