Merc 2.5 260

[barnhauler]

Hello , I am running a 2.5 260 on a allison xb 2002 , I'm having trouble getting out of the hole , seems to be lugging but as soon as gets on plane it's seems fine and has plenty of throttle response , I thought maybe the stator was going bad on the low end but I put another on and it still wants to lope on takeoff , any suggestions , thanks

[patchesII]

What prop and what is your engine height? Is this a new problem or is it a new to you boat?

[barnhauler]

28p Yamaha drag prop , it's a new problem haven't adjusted setup in years

[patchesII]

Have you tried another ecu? Check your barb on the horn for the map hose on the ecu to be sure it's clear. Motor could be loading up

[barnhauler]

I have two ecu's , both are a48 , map sensor to the ecu is clean , as well as one from regulator

[barnhauler]

I have tried both ecu's , same result

[barnhauler]

I meant the map sensor hose to the horn is clean

[stoker2001]

Ohm out the air temp sensor,should be 8Kohms give or take at ambient temps of 75*
also check for leaky injectors,then maybey reeds if idle is abnormal

[barnhauler]

Ok I pulled reeds , they looked ok , haven't checked air temp sensor , will do thanks