how can i tell if the injectors are going bad

 

Dont believe there is any way for TPI cept to have them bench flowed ? correct me if im wrong.

What problems are you having.

 

the cars sputtering up to speed and lacking power but sometimes its there

 

There two tests to do for injector failure.

1. Test with a mulitmeter. Measure the resistance to check if the coils in them have failed. Take off the plug of each injector and check what ohms they show on the meter. Should be 16 to 17 ohms or 13 to 14 ohms depending on what variation of injector the factory put in your car and consistent readings across all eight injectors. If some of them read very low then you have some with bad coils.

2. Using a fuel pressure gauge connected on the fuel rail note what the fuel pressure is running and after you shut the car off. Then with the gauge still connected when the car is off watch how long it takes for your pressure to bleed down on the gauge. If right after you shut the car off it bleeds down to zero or within a minute or two bleeds down to zero then your injectors are leaking. Normally it would take hours and often never bleed totally down to zero.

 

i did that i didnt notice it bkeed down

 

Make sure you ohm them hot as they have a tendency to get worse with heat soak.