Misfire! Help!

[Hipster]

I’ve figured it’s fuel related due to the low fuel pressure. Another test said i had 52 psi of fuel pressure.

Your post reads that you tested fuel pressure then changed pump did this not resolve fuel pressure issue or is that not the chain of events?

If your fuel pressure is now fine re-read post #6

 

[Canon Lansdell]

Well going up to 95mph is quite a load. 75 on down how she running?

Before i got up to 95 it ran fine. The next day i was talking to my college instructor and he said the fuel strainer may be clogged so that was the next thing i did

 

[Canon Lansdell]

Your post reads that you tested fuel pressure then changed pump did this not resolve fuel pressure issue or is that not the chain of events?

If your fuel pressure is now fine re-read post #6

I tested the fuel pressure first and then changed the injectors, filter, and pump. each time i’m still not getting good fuel pressure

 

[Hipster]

I tested the fuel pressure first and then changed the injectors, filter, and pump. each time i’m still not getting good fuel pressure

You been through most of the system But I don't see anything about the pressure regulator

 

[SUBURBAN5]

If you swapped to mpfi it should of came with new regulator?

 

[SUBURBAN5]

Also are you burning coolant? Or loosing any?

 

[stutaeng]

Just keep it below 95 MPH! LOL

 

[Hipster]

Just keep it below 95 MPH! LOL

Who'da thunk? problem solved lol

 

[Canon Lansdell]

You been through most of the system But I don't see anything about the pressure regulator

New pressure regulator with MPFI upgrade

 

[Canon Lansdell]

Just keep it below 95 MPH! LOL

It misses at all speeds not just 95 lol