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1988prostar190
05-13-2013, 09:39 PM
Hey i just had a carb rebuild and the boat started and runs good up to about 2000rpm then seems to chug and cough for more feul to get the rest of the way up to full rpm. The factory settings were set up on carb but what screw should i fiddle with to try and mix up the rest of my rpm???
This is not a spark issue
Thanks guys

thatsmrmastercraft
05-13-2013, 11:34 PM
First check to see that your choke is opening fully. Did you replace the fuel filter at the time of the carb overhaul? What top speed and RPM are you getting now?

1988prostar190
05-14-2013, 03:30 PM
fuel filter was changed and choke is open full. Were getting about 20mph out of it right now with no issues then it starves

thatsmrmastercraft
05-14-2013, 03:40 PM
You might take a look at a spark plug or two to confirm that it's not running really rich instead of lean.

I would look for a really big vacuum leak like the hose that runs from the carb base to the pcv valve. May as well check for a vacuum leak around the base of the carb as well.

Probably need to remove the primary float bowl and check that the float level was set correctly. If it's set way too low it could starve you for fuel.

JDC
05-14-2013, 05:03 PM
I agree you should pull a plug or two to see if it's running rich or lean.

A really big vacuum leak would make it run bad at idle, so that may not be your problem since you said it starts and runs good up to 2000.

As suggested... verify float level. Also verify that your fuel pump can deliver the goods. Sure it may have been fine before the carb rebuild, but you have to be sure before you can move on to other things.

Just my :twocents:

1988prostar190
05-23-2013, 09:52 PM
In the end it was my piont contact distance in the distributor cap setting my timing off, which didn;t allow the engine to draw the rear barrels open
thanks