Ingnition spark is so weak - engine would not start.

[alexjohnne]

Thanks yogy for your help. I sprayed some around and in the air intake, but it did not help really. I will add injector cleaner to my gas and run it for some time. I have another question - my speedometer does not work. What is usual reason for that problem and how can I fix it?
Thanks, Alex O.

[alexjohnne]

I finally fixed it! The used ingnition module I bought at the salvage yard did not work right. It would feed only 4 cylinders (2 were dead). That explains rough idle and shaking during normal drive. I went back to that salvage place and they replaced it for me. Other one finally worked! Now this baby works perfect. Thanks all of you for your time and valuable info. God bless.
Alex