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for the pros
http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=1672		 Page 1 of 1
Author:  BROACH [ Mon Apr 20, 2009 11:18 am ]
Post subject:  for the pros
need help on motor question. Ihave a 35 vanguard w/mikuni carb, bps exhaust. Just recently had the lower unit rebuilt had a bad bearing that i thought was making the motor bog down at about 3500 rpm. took boat out yesterday and motor will get up to 3980 rpm's but when i give it more throttle motor bogs down, go back to previoud throttle motor runs fine at 3980 rpm's. Motor in neutral and i can bump rev limiter easy 4350 rpm's, put in gear and cannot get above the 3980 rpm mark. Any suggestions on what to check would be appreciated. Thanks to all :?:
Author:  Silkpower [ Mon Apr 20, 2009 1:43 pm ]
Post subject:  Re: for the pros
Sounds like the main jet is off a bit . what main jet do you have ?
Author:  BROACH [ Tue Apr 21, 2009 7:17 am ]
Post subject:  Re: for the pros
I am not sure witch jet is in the carb. When i installed the carb early last year motor ran like a champ, rpm's pushed 4200 to bumping rev limiter when by my self. If it was the main jet do you think it would have done that from the start? I know the carb came with two jets I need to look to see which one I have left. thanks
Author:  deadbird8 [ Tue Apr 21, 2009 5:09 pm ]
Post subject:  Re: for the pros
If it worked well before I would not suspect jet size. You sure you are getting fuel at the higher RPM- have you pulled the fuel bowl to see if there is anything floating in there?

The problems started happening along with your lower unit issues or is this coincident?
Author:  Gator Guy [ Tue Apr 21, 2009 6:21 pm ]
Post subject:  Re: for the pros
Pull the main JET, mine did the same thing and i had a little piece of trash in my jet.
Author:  BROACH [ Tue Apr 21, 2009 8:14 pm ]
Post subject:  Re: for the pros
now that I think about it, a few times last season it backfired on me trying to get out of the hole in a little muck. acted like it didnt have enough power???? thanks to all
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