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2.5 efi won't rev over 5000 rpm
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16-06-2014, 01:31 PM
#
1
the rat
Registered User
Country: thornton
Occupation: kitchen supplier and installer
Boat name: roofless
Boat make: phantom/talon 18's/scarab 21,Larson 254 cabrio
Engines: V8
Cruising area: wyre/morcambe bay
Join Date: Apr 2008
Posts: 312
2.5 efi won't rev over 5000 rpm
2.5efi on p18 runs great up to 5000 rpm the pulls back if full throttles applied,anyone any idea what the problem might be,props a 26 pitch 3 blade
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16-06-2014, 04:43 PM
#
2
beyondhelp
Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
What do the plugs look like?
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16-06-2014, 06:29 PM
#
3
the rat
Registered User
Country: thornton
Occupation: kitchen supplier and installer
Boat name: roofless
Boat make: phantom/talon 18's/scarab 21,Larson 254 cabrio
Engines: V8
Cruising area: wyre/morcambe bay
Join Date: Apr 2008
Posts: 312
Quote:
Originally Posted by
beyondhelp
What do the plugs look like?
Brand new,only run for 1hr,seems to get too much air if I give it full throttle
16-06-2014, 06:38 PM
#
4
beyondhelp
Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
So signs of running lean?
16-06-2014, 08:57 PM
#
5
the rat
Registered User
Country: thornton
Occupation: kitchen supplier and installer
Boat name: roofless
Boat make: phantom/talon 18's/scarab 21,Larson 254 cabrio
Engines: V8
Cruising area: wyre/morcambe bay
Join Date: Apr 2008
Posts: 312
Quote:
Originally Posted by
beyondhelp
So signs of running lean?
Not checked them yet but will do at the wknd,I'm on an analogue ecu if that helps?
16-06-2014, 09:32 PM
#
6
maz928
Registered User
Country: England
Location: Poole
Interests: Boats/cars
Boat make: Boss 21/Argentinian HotBoat
Engines: Mercury 2.5 Offshore
Cruising area: Poole/Solent
Join Date: Jul 2007
Location: Poole
Posts: 326
I'd check the throttle positioning sensor and then the high speed coils on the stator ....
16-06-2014, 10:14 PM
#
7
the rat
Registered User
Country: thornton
Occupation: kitchen supplier and installer
Boat name: roofless
Boat make: phantom/talon 18's/scarab 21,Larson 254 cabrio
Engines: V8
Cruising area: wyre/morcambe bay
Join Date: Apr 2008
Posts: 312
Quote:
Originally Posted by
maz928
I'd check the throttle positioning sensor and then the high speed coils on the stator ....
I have a spare sensor so will try that,stator should be ok as it's quite new tho I've a spare and will change that too,thanks
16-06-2014, 10:42 PM
#
8
beyondhelp
Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
Quote:
Originally Posted by
maz928
I'd check the throttle positioning sensor and then the high speed coils on the stator ....
Good idea that.
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