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-   -   force 3.5 engine problems (https://www.rcuniverse.com/forum/speed-rc-nitro-boats-117/8856816-force-3-5-engine-problems.html)

vamp131 06-16-2009 01:24 PM

force 3.5 engine problems
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<span style="font-family: Verdana;"><span style="font-size: medium;">Hi summer is here so dusted off my boat but its not running good cleaned out the carb but it will only run with the needle 4 turns out and will not rev out

i have an air boat and a plane they run with the needle around 2 turns out im using 20% fuel

your thoughts on this be fantastic

took the universal drive off as when i tried to turn the boat would just jump out the water lol</span></span>

Dan S 06-16-2009 02:04 PM

RE: force 3.5 engine problems

I have a question for you.
last time you were out with the boat and it was running good was when (last summer)?

Do you remember where was the HSN at?

Just to give an example, lets say that last summer the engine was running with the HSN at 2 3/4 turns out and now the only way you can get the engine running is at 4 turns out.
thats a big difference and it should not be so, if this scenario fits your situation this means that you are compensating with a rich mixture caused by another problem.
that problem could be that the engine has an air leak somewhere, could be from a fuel line (small pin hole), carb not seated properly and the one that happens too often, a bad bearing.


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