Starfire GT50 engine fires up but stalls prematurely

Under most circumstances #242Blue loc-tite holds up very well. With any loc-tite product only a drop is needed, you don't need to liberally coat the threads as some folks think. Doing so is just a waste.
#271Red loc-tite does need heat to remove, and under hot situations will hold up much better than 242Blue. #277Red is much stronger than #271Red. It may get you into trouble if you ever need to remove a fastner in the future. Use it with caution.
These observations are based on me wrenching on Harley-Davidsons for 16 years at various dealerships and independant shops. Harleys are notorious for vibrating and shaking darn near everything loose, especially Panheads, Shovelheads, and Ironhead Sportsters.

98% of all Harleys are on the road...the other 2% made it home.
 
Al- that remark was really good!
Not true but funny. ( I don't have a Harley- rode by buddy's reworked 1200 Sportster and was shocked at how fast it is, and mimimal vib.)
 
98% of all Harleys are on the road...the other 2% made it home.

HyYuckYuckYuck.....
You should stop wrenching on other people's Harleys then! :giggle:

They really are not that bad at all. Yes, they do need more maintenance then metric bikes.

Ok, I am done. Thread hi-jack over.
:)
 
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Reguarding probable too rich fuel mix

Hey guys,

Just been running my first build trying to get it finished however in my efforts to be better safe than sorry, combined with my first time fuel mixing, I think i've most likely quite richly overmixed my oil to fuel.

Seems to me that this is now causing some real problems with starting the engine, I removed the spark plug and it was covered in a thick black carbon.

I cleaned it off and reinstalled it but upon removing it again it had black rings on the outer casing of the spark plug.

It also seems possible that dispite my best efforts washing out the fuel tank, from some collected particles in the fuel line, maybe some small particles got in there?

Anyway. As far as I can tell I just need a way to clean it out, as it still seems to be trying to turn over just fine.

Thanks peeps
 
I am kind of a newb around here, but I believe that too much oil in the fuel will cause a lean running condition. Try re-mixing the fuel at a recommended ratio and running it again. It might be extra oil fouling the spark plug, not too much fuel in relation to fuel/air ratio.

Try one of those cheap plastic fuel filters, and pop off the carb bowl and see if it is full of crud.

You might also want to try a slightly hotter plug.

With this being said, I have yet to ride a HT bike, I am still working on mine, but I have experience with 4 stroke air cooled bikes.

Good luck, let us know how it goes.
 
For sure get a good small external fuel filter and remove the in-tank filter before you do anything.

Just get a new plug at this point.

Mix up a 25:1 fuel to oil mixture, which is 5.1 fl oz (5 oz is fine) oil to 1 gallon (128 fl oz) of fuel. Use a good oil.

You may need to clean the carb.

Give it a go.
 
Lets be clear...and this is a bit of a hobbyhorse issue for me. Too much oil is simply too much oil. It is not "rich". Save the terms "rich" and "lean" for describing the ratio of fuel to air...and nothing else.

When speaking about gas and oil, state the ratio of use the terms "more oil" or "less oil" or some such...this helps us to keep from getting 2 issues confused.

It is true that too much oil causes a lean fuel condition because if there is more oil in the mix, there is less gas and therefore less gas to mix with the air.

I agree with Pablo and Toe- mix up some fresh gas, drain out the fuel, and give it another shot.
 
Thanks for the vocabulary lesson....

So black unburned oil in the cylander isn't a problem? Sorry if unburned isn't the right word.
 
sounds like too much oil

Thanks for the vocabulary lesson....

So black unburned oil in the cylander isn't a problem? Sorry if unburned isn't the right word.

sounds like too much oil

maybe we may try a visit to the local auto store
buy a -- 2 cycle measuring cup makes it so very easy

there has been so much said regarding proper mixture around site ??

25 to 1 while brake in ??
32 to 1 after break in ??

I like mine a little rich ---------- sorry for using the wrong term
just a little smokey -- seems to keep that THING running okee dokee

MM
 
heh yeah probably the oil but still surely now I need to clean it out, if its invariably filled with black sooty stuff..
 
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