nothing over 1000 rpm's

[Bcultice]

I have a 1996 mercury 150 blackmax XRI EFI that ran great, till it all of the sudden wouldn't get over 1000 rpm's I can give it gas and it's like it's just bogging down, I have replaced the water separator filter, the plugs, and primer bulb and half of the feul line, when it started this it would do it for about an hour then run fine for a while then do it again, now it just does it all the time, any help would be greatly appreciated

 

[boobie]

Go over your fuel system again and then do a cylinder drop test on it when it's acting up.

 

[Bcultice]

when the engine is doing its running bad thing I can smell gas pretty strong, plus after it has been running and I pull the plugs they are still wet

 

[Faztbullet]

Sounds like a stator is dropping a bank of cylinders

 

[Bcultice]

another thing that's got me puzzeled is it only does this under a load

 

[wired247]

Probably dropping a bank of cylinders It doesnt take much power to rev up with no load if 3 cylinders are working

 

[Bcultice]

it has good fire going to all 6 plugs

 

[Chris1956]

Gee, that motor has a high speed and low speed stator windings. Does it have spark on all 6, when you try to accelerate?

 

[Bcultice]

not sure but will check

 

[wired247]

it has good fire going to all 6 plugs

At idle or at high speed?

 

[Bcultice]

idles normal, but wont get above 1000 rpm, but sometimes runs fine