info on car,383 built two years ago,Opti,wires,all of which have less than 5000 miles.Car ran perfect up until last night when it started to sputter and backfire,now no start.I will scan it for codes asap.Any ideas.

 

I Would say spark plugs..anyone can correct me on that one thoe

 

I would say the coil wire...

 

Here you go. This should give you a few things to check. I also doubt it's the plugs. They don't just all go at once and cause the car to not run, unless something else is terribly wrong.

http://www.mainstreamtopics.com/foru...p?showtopic=78

 

I was thinking the same,hopefully something simple,and or plugs.

 

Follow the link and instructions in my post. Don't just start throwing parts at it.

 

Thanks great info.

 

Quick update,fuel pressure is good,no codes present,pulled a plug wire off,spark was present.Borrowed an ICM from friend,still no start.Also hooked up an old coil but did not bolt it on to the head,would that matter?Opti and wires have 5000 miles,this is the first issue i had with the car since i rebuilt the motor 2 years ago.What am i missing?

 

Here's a test for the coil and a test for the opti. Check these and see if you find anything.

http://shbox.com/1/coil_testing.jpg

http://shbox.com/1/4th_gen_tech2.html#opti_test

 

Thanks,i've been reading shoeboxs site,i just dont have access to a meter right now.there is spark at the plug side of the wire,not 100% sure if its good or somewhat weak?