injector problem or coil pack problem?

[Sgreg]

Originally Posted by ZZZZZR1

hey guys,

Car started to "stumble" @ 35mph in a big way yesterday....

Lost power and seemed like the motor couldn't breath. I kept feeding the gas and it knocked more & more. Then stalled. In order to get it started I had to push the gas and white smoke would come out in 1st / 2nd gear. 3rd gear on, no white smoke (motor had minimal power).

Drove 150 miles and went thru 13 gallons of gas. Car did idle for probably 20min durring that time.

What is the best way to see if the injectors are bad and if there is a coil pack problem.

thanks!

David

Just a suggestion, but I would check your fuel pressure. May be about to lose a pump. Then look at injectors.