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 15.5 hp turbo cooled craftsman briggs and stratton wont start

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dylansrockinrigs
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PostSubject: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Tue Oct 23, 2012 8:38 pm

I have a craftsman with a 15.5 hp turbo cooled motor and one day i decided to pulley swap it and bypass the governor so i could get a little extra speed by pulling on a string (i only did this once) i rode it all over and then it shut off and would not start again. I cleaned the piston and cylinder walls thourougly and it has good spark. I think i may need to add oil and clean the carb. I tried to start it this morning and it fired once then died and wouldnt start again.
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Junkstarbuilds
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PostSubject: sounds like a carb problem to me,   Tue Oct 23, 2012 8:57 pm

I think it sounds like a carb problem, but then again there could be a whole slue of problems..Not to get you worried, but I would just start with a good carb cleaning..
try this, take a little gas in something you can pour small amounts from and drip some gas directly into your carb without the air filter..as you do this, turn it over..If it tries to run, but struggles when you stop dripping the fuel, then It might mean you have a carb problem. If it does nothing, you may have a carb problem where it is giving too much gas..hence flooding the intake....try that and see what happens

running without a gov without changing some of the stock inturnal parts can be risky. I personally can not attest to the uncertainty, but I have seen alot of people mentioning that unless you are rebuilding with performance in mind, leave the gov on..


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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Tue Oct 23, 2012 9:24 pm

ill try that.
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Junkstarbuilds
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PostSubject: Im online for a few hours    Tue Oct 23, 2012 9:26 pm

dylansrockinrigs wrote:
ill try that.

If you are doing this now, Ill be online for several hours..Im at work farao

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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Tue Oct 23, 2012 9:32 pm

I gotta go to school tomorrow and my shop doesnt have any lights.
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Junkstarbuilds
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PostSubject: no problem..   Tue Oct 23, 2012 9:34 pm

dylansrockinrigs wrote:
I gotta go to school tomorrow and my shop doesnt have any lights.

I dont always know where everyone is in the world..take care....till another day!

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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Tue Oct 23, 2012 9:35 pm

im gonna try to work on it tomorrow.
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Chopperhed
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Tue Oct 23, 2012 11:35 pm

This may help

Instead of using gas to prime the engine, I use spray bomb carb cleaner. They usually come with a straw that lets you aim it right down the bore.

Its my best method for testing engines on site. If it will run on carb cleaner it will run with a carb job.
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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Wed Oct 24, 2012 6:26 pm

I just ran out of carb cleaner but i have the stuff you soak it in so i think im just gonna take it apart and soak it
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PostSubject: couldnt hurt..   Wed Oct 24, 2012 8:27 pm

dylansrockinrigs wrote:
I just ran out of carb cleaner but i have the stuff you soak it in so i think im just gonna take it apart and soak it

I suppose If you have the stuff go for it..Do you have an air compressor? helps down later in cleaning...Please wear eye pro! I know you arent using carb cleaner spray, but I have had it in my eyes three times...sux What a Face

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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Wed Oct 24, 2012 9:50 pm

My dad has one... I have gotten that spray stuff in my eyes once.... its terrible
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Chopperhed
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Wed Oct 24, 2012 11:37 pm

Dou you have a compression tester?

Does it feel normal when you pull on it.

Time to go down the list,

Does it have compression
Does it have spark
Does it have fuel
Is the timing right
Is the mixture right

If these things are correct, a good mototr should run

If not look for mechanical issues
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PostSubject: Just had to quote you on that portion...   Wed Oct 24, 2012 11:47 pm

Chopperhed wrote:


Does it feel normal when you pull on it.



HAHA! Twisted Evil lol!





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dangeroustoys56
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Thu Oct 25, 2012 7:25 pm

These are a couple pics of a cast flywheel on a pulling tractor that exploded:






Yeah its a modifed motor, but its pretty much what could happen if a cast flywheel weakens - two things could prevent this - proper speed parts with a billet flywheel or a bigger motor .

My murray had a stock governed 18HP twin that ran around 30mph - the original 14.5HP OHV motor didnt have enough power for me.
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dylansrockinrigs
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PostSubject: Re: 15.5 hp turbo cooled craftsman briggs and stratton wont start   Thu Oct 25, 2012 10:14 pm

okay im gonna do away with my governer bypass then... I still havent got to work on it yet.
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15.5 hp turbo cooled craftsman briggs and stratton wont start

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