bike wont stay running

[Travis398]

and doesn't have that vertical piece. # 10 im guessing.

ill have to take a picture of it for ya guys when i get home tonight to show ya what mine looks like.

#10 is just the strainer, It is inside the gas tank. So you can't see it unless you remove the petcock.

A picture would help quite a bit, I don't see anywhere in this thread where you say what year bike you have.

I see everyone else calls it an 87 so I assume they are right. Still, the more info you give the better feed back you will get.

And yes the fuel hose routing can be very sensitive on these bikes, I have seen them run fine for 10 minutes and then shut off.

Wait a while crank it crank it crank it and then it runs for another 10 minutes.

[Pat Conlon]

It may be possible that you have a aftermarket petcock. Doubtful but possible.
The brown nipple here is the vacuum port on the FJ oem petcocks. This should hook up to a rubber vacuum line which goes to #3 intake port.

[irishluck]

okay boss let me explain this a little easier for ya.

yes i work for a motorcycle shop, IM A WEBSITE DESIGHNER. not a mechanic. better? good

2nd im not going to do a compression test when the engine is grinding and popping when i  turn it over.


3rd the company stricktly works with moto guzzi bike, not yamaha kaws or suzuki. Moto Guzzi is a way differnt bike then those.

Better?

[irishluck]

heres what my "petcock" looks like
and it is an 87, yes.

[FJmonkey]

heres what my "petcock" looks like
and it is an 87, yes.

Dude!!! Great reply, that is not OEM!!! A picture is worth a 1,000 words. You have a straight fuel supply to a shut off valve or worse, the carbs (maybe a vacuum switch). No filter or fuel control, very old school and not stock. This guy needs our help, not angst. he has been bashed by the dreaded PO!!!!

[Marsh White]

heres what my "petcock" looks like

Looks like your question has been answered.  Compare your pic to the one that Pat posted.  You have an aftermarket petcock.

[weymouth399]

That is not a petcock, that is a home made fitting someone made. There's one of your problems.
There's no way to shut the fuel off at all. There not cheap.

Bob W

[Marsh White]

yes i work for a motorcycle shop, IM A WEBSITE DESIGHNER.

Cool!    I know a little something about that field.  What is the link to the site you built for them?  (also - as an FYI - there is a "Spell Check" button to the right of the "Post" button - I use it all the time - it helps me)

[FJmonkey]

yes i work for a motorcycle shop, IM A WEBSITE DESIGHNER.

Cool!    I know a little something about that field.  What is the link to the site you built for them?  (also - as an FYI - there is a "Spell Check" button to the right of the "Post" button - I use it all the time - it helps me)

Marsh, I think he is stressed, getting bashed by us when the PO did the super quality work and left him with a sub standard bike. That would drive me batty (homicidal) . The older the bike, the more crazy and numerous the PO's are found. Bugger the PO's!!!!

[racerman_27410]

i can see that home made fitting letting all kinds of particles thru it.....  sadly those particles would be just the right size to plug up the jets in the carbs.



KOokaloo!

[racerrad8]

Looks like an in-line valve in the hose and by the photo of the back side and it looks like it is in the closed position by the shadow of red.

"sigh", just think where we all could have been if we had this a few days ago...

That is my input based on the most current information supplied by the unlucky, "irishluck". Those pictures provided more info than all of his posts combined.

Randy - RPM

[irishluck]

hold on, there is a valve on it and it does shut the fuel off when needed.

[irishluck]

ha ha okay so i should have posted pics first, i get that now and will remember that=D

OK so the set up on this though is that "petcock" goes to fuel filter, then to carbs.

and the "PO" don't bug me, i have a legal PO already so i get bashed quite often.

The link to the site Ive been building is harpermoto.com

WE deal with moto guzzi motorcycles.


okayy soo im guessing this so called "petcock" is pretty bad and needs a new one correct



Edit:


when i bought the bike it actually ran pretty good, the flue tank was in pretty bad shape though, all rusted on the inside and gunked up, so i bought that por-15 kit and it has actually done really good sealing the tank all up/

[FJmonkey]

hold on, there is a valve on it and it does shut the fuel off when needed.

Way past the point (maybe a pint of stout or two will help the thinking process, mull it over) Mr. Irish. You have zero filter and no fuel control when the power is off (bad for gravity years like my 86/87 bike). Your set up is way past OEM!!! We want to help. Let us guide you to the path of Kookaloo and FJ enjoyment.

When we say PO it means Previous Owner, he guy who cuts corners. It is the bane of our FJ existence. Some of us are in the same state of Kookaloo impairment.

[Pat Conlon]

okayy soo im guessing this so called "petcock" is pretty bad and needs a new one correct

Yeppers. Throw that POS away. Buy a oem 84/85 Yamaha petcock with a real filter screen.
You see the problem with that home made tank fitting, is that unless you reach under the tank and manually close the valve EVERYTIME you shut your engine off, all you need is a tiny speck of debris or varnish holding your float needle open, then you entire tank of gas will end up on your garage floor...

Of course your garage door will be shut and your water heater will cycle on....