454 mpi with poor throttle response
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454 mpi with poor throttle response
I recently purchased a boat with a 454 mpi with only 170 hrs on it.
I know little about the history on the boat. When you hit the throttle the response is slow whether it is sitting in neutral or in gear. Once the rpm's are up a little it roars to life and will fly, but the initial response is poor and should be much quicker. The only mods I know of are a set of wet headers.
If it were a carb I would be looking at the jets or for a vacuum leak. I am new to the port injection world, any thoughts? The motor purrs without a miss at any rpm, and response is great above 2000 rpm.
Injectors, ECM?
Thanks for any help.
I know little about the history on the boat. When you hit the throttle the response is slow whether it is sitting in neutral or in gear. Once the rpm's are up a little it roars to life and will fly, but the initial response is poor and should be much quicker. The only mods I know of are a set of wet headers.
If it were a carb I would be looking at the jets or for a vacuum leak. I am new to the port injection world, any thoughts? The motor purrs without a miss at any rpm, and response is great above 2000 rpm.
Injectors, ECM?
Thanks for any help.
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Fixx
I recently purchased a boat with a 454 mpi with only 170 hrs on it.
I know little about the history on the boat. When you hit the throttle the response is slow whether it is sitting in neutral or in gear. Once the rpm's are up a little it roars to life and will fly, but the initial response is poor and should be much quicker. The only mods I know of are a set of wet headers.
If it were a carb I would be looking at the jets or for a vacuum leak. I am new to the port injection world, any thoughts? The motor purrs without a miss at any rpm, and response is great above 2000 rpm.
Injectors, ECM?
Thanks for any help.
I know little about the history on the boat. When you hit the throttle the response is slow whether it is sitting in neutral or in gear. Once the rpm's are up a little it roars to life and will fly, but the initial response is poor and should be much quicker. The only mods I know of are a set of wet headers.
If it were a carb I would be looking at the jets or for a vacuum leak. I am new to the port injection world, any thoughts? The motor purrs without a miss at any rpm, and response is great above 2000 rpm.
Injectors, ECM?
Thanks for any help.