Does this sound right??? How bad is it?

A couple of days ago I posted a question about fuel leaking fom my idle adjustment screw...... Silly me :blush:

Now after lifting the seat on my 1980 KZ750 H-1 LTD and lifting the gas tank I see the problem.

The gentleman who owned the bike before me left the petcock on PRIme for months, maybe even years and to my understanding has probably fludded the carbs to a horrible extent.

I have rust and grime running down and in between my 2nd and 3rd carbs and a little on my 1st because of it being sat on the side kick stand.

I'll wipe everything down at night so there doesn't seem to me any moisture and when I wake up in the morning I have a small puddle, no larger that a post-it note, next to my kickstand.

Can my earlier assumption have caused a bad leak at the grommets? It runs fine a seems to not wanna chug so how bad is it?

I will get it fixed soon but what does this sound like to you? Easy fix or not?

I would say easy to fix, but you have to find it first. Try to look and see what is above where the all grime is. So, if the grime extends above the area where the bowl gasket is, it's something leaking above the bowl gasket.

I would check for leaks at:
1. Petcock
2. Fuel lines
3. Fuel distribution tubes

I had a leak on the fuel distribution line. So, the gas flows into the little T pipe that connects 2 and 3 carb. Then is goes through a even smaller tube to the 1 and 4 carbs (1 and 4 are filled from 2 and 3). It was a pain to find, but just a simple o-ring. My guess is you have a leaky petcock or fuel line.

is that a vacuam petcock,is it shutting off? float sticking on a carb? could be many differant things

Well after doing some research I believe that since my petcock has only on, reserve, and PRI(Prime), it would be a vacuum. I leave it to on now and it's still leaking....

Any ideas???

xLowEndx wrote:

Well after doing some research I believe that since my petcock has only on, reserve, and PRI(Prime), it would be a vacuum. I leave it to on now and it's still leaking....

Any ideas???

Might be dirty inside, and just need cleaning.

And maybe also need a rebuild kit from Z1E.

Good Fortune!

other than that little leaking everything seems good with the bike. do ya think it'll be okay to ride it to get emmissions done on it and to hit the store for a new oil and air filter?

will I damage much?

What does the oil level look like when it's on the centerstand? If it's not over the top line in the sight glass, you'll probably be just fine. The leak is more of an annoyance than anything.

Would also sniff-test the crankcase oil an examine its physical condition to determine whether there's been any gasoline intrusion into the crankcase.

If oil is found to be fuel-contaminated, should drain oil and filter, and correct the carb situation before re-filling the crankcase and installing a brand new filter.

Good Fortune!

So here's an update:

I haven't taken off the gas tank but I believe that my carbs are not overflowing.



From the petcock there is a hose, then small semi clear container of gas that almost looks rusty in the picture but isn't, and I believe that the hose from the other end leads to part number 23 in the link below:

webservices.motorsportdealers.com/parts/...US/4/08/0119/C-8.Gif

Sound possible?

xLowEndx wrote:

...believe that the hose from the other end leads to part number 23....

Yes, part #23 is a tee-joint called the fuel pipe.

xLowEndx wrote:

...gentleman who owned the bike before me left the petcock on PRIme for months, maybe even years and to my understanding has probably fludded the carbs to a horrible extent...

leave it to on now and it's still leaking...

believe that my carbs are not overflowing.

Fuel contamination of crankcase oil may occur absent external evidence of carb overflow or leakage. This is a concern when petcock is faulty or remains in PRI position for extended times.

Good Fortune!

one last question on this topic....

Can anyone tell me or show me the last part/hose that is coming out of the petcock running into the "fuel pipe"/t-joint? This hose may also be a problem.

Also, where would be the cheapest and fastest place to find the parts?

Thanks in advance....

xLowEndx wrote:

one last question on this topic....

Can anyone tell me or show me the last part/hose that is coming out of the petcock running into the "fuel pipe"/t-joint? This hose may also be a problem.

Also, where would be the cheapest and fastest place to find the parts?

Thanks in advance....

Fuel line runs from petcock to fuel pipe.

Good idea to add an in-line fuel filter for gasoline to pass through on its way from the petcock to the fuel pipe to assure clean gasoline enters the carbs.

Z1 Enterprises carries fuel line, filters, and most any other parts that might be needed.



Good Fortune!