1994 indy 500 efi bog

[jjmuskie]

Got a 94 indy 500 efi. runs great for about 10 miles then starts to bog. get worse and worse to the point whre it was not drivable. Let it sit about a half hour and was able to drive it home but as i got closer to home the bogging came back. Im guessing stator or coils? Thoughts?

 

[Pro116]

Those 500efi’s can be problematic. Check the compression in each cylinder. Are the fuel filters original?

There had been quite a few people that converted them over to carbs over the years because they could never solve the issue but there is quite a bit of stuff involved in doing it.