rough idle 150 mariner 97

[jhs]

i have a 150 mariner that runs great othe than idleing. it seems to load up even though its fuel injected? just bought it and thats the only thing holding me back thanks for your help. jason

 

[Faztbullet]

Re: rough idle 150 mariner 97

Several things can cause this:

1) Injectors dirty or flooding
2) Bleed line filter stopped up
3) Map sensor hose cracked
4) TPI misadjusted