Need help, 540 with 2.3 Whipple.

[DGRAY75]

I have a 540 with a efi 2.3 top mounted Whipple.. wont run more than 15 seconds with map sensor plugged in.. If I unplug sensor it will run until you put it on a load then dies,, any ideas..,

Thank you

 

[BIGRED9158]

I have a 540 with a efi 2.3 top mounted Whipple.. wont run more than 15 seconds with map sensor plugged in.. If I unplug sensor it will run until you put it on a load then dies,, any ideas..,

Thank you

Different prop should work

 

[calkid]

Are you towing it with an F150?

 

[ChrisV]

Sounds like map sensor

 

[ChrisV]

If you can hook up the lap top and see map sensor readings reving in neutral. See if it changes

 

[monkeyswrench]

Could it be a fueling issue? Never had the setup, but I've had both weak spark and low fuel pressure bite me in the ass when I put boost to a motor. (At least once causing spectacular, and costly, results) Not familiar with the EFI on marine applications, and how they react.

 

[HST4ME]

Look at the IAC, that and the map sensor are married. You'll need an appropriate scan tool to read values.

 

[DGRAY75]

Look at the IAC, that and the map sensor are married. You'll need an appropriate scan tool to read values.

Just bought the tool.. should be here tomorrow.. supposed to be in havasu on thur!

 

[Cdog]

IAC & MAP sensors.

 

[DaveH]

while it could likely be map sensor, if the boat has been sitting i would checked for clogged fuel filter or injectors

 

[Shlbyntro]

is the whipple new or has the engine been in this configuration for a while?

 

[pkrrvr619]

one suggestion is to buy the 2.3l Whipple system I have for sale and turn that 540 into a quad rotor

 

[DGRAY75]

one suggestion is to buy the 2.3l Whipple system I have for sale and turn that 540 into a quad rotor

i have 2 of them ..lol.. thank you though.

 

[monkeyswrench]

i have 2 of them ..lol.. thank you though.

Then you need a spare!

 

[pkrrvr619]

Then you need a spare!

This guy get's it hahahah