454 mag dies after 3000rpm help!!!
 

ok, my 454 in my sunsation dies after 3000 under load

new plugs

water fuel seperator

anti-siphon valve

wires

it even stalls..when giving it the gas ...ran good in the fall???

even feel free to call Dan 248 514 8650 ....thanks

96 and before check vapor seporator tank VST filter ..a topic elsewhere on board..and seen more frequently lately..

I foregot ..it is EFI...sorry///

Had that exact problem on a carbed 454 last year. Put in some octane booster and carb cleaner - everything seemed to work.

check the fuel tank vent I have seen those little mud wasp make a nest in there and the tank cannot vent. I even had a motor out for rebuild and while it was out they made a nest in the fuel line when I put the motor back it would not run. I had one hell of a time finding that plugged line from the pump to the carb.