1980 Petcock ? ASAP

[gsvol]

i just want to know if its OK to ride till i get a new one...IT RUNS FINE!!! just sucking a little air at petcock like i stated above

[Nessism]

i just want to know if its OK to ride till i get a new one...IT RUNS FINE!!! just sucking a little air at petcock like i stated above

It should be okay to ride like it is. As a sanity check you might want to verify whether or not the fuel flow stops when the vacuum source is removed. If not, there will be fuel pressure on the float needles all the time (even when parked), and leakage will result in carb overflow and (likely) fuel getting into the crankcase and diluting the oil. Also, I'd verify there is no fuel entering the vacuum line and back-flowing into the carbs that way. A clear vacuum line will tell the tail here.

[gsvol]

It should be okay to ride like it is. As a sanity check you might want to verify whether or not the fuel flow stops when the vacuum source is removed. If not, there will be fuel pressure on the float needles all the time (even when parked), and leakage will result in carb overflow and (likely) fuel getting into the crankcase and diluting the oil. Also, I'd verify there is no fuel entering the vacuum line and back-flowing into the carbs that way. A clear vacuum line will tell the tail here.

should i keep the vacuum leak blocked off or let it leak?

[Guest]

should i keep the vacuum leak blocked off or let it leak?

You have a vacuum leak on the #2 cylinder as a result of the bad petcock.
Seal it and get a new petcock.

[gsvol]

You have a vacuum leak on the #2 cylinder as a result of the bad petcock.
Seal it and get a new petcock.

it is sealed with the gum over the petcock, so no leak at the petcock!

[Guest]

it is sealed with the gum over the petcock, so no leak at the petcock!

I've heard of the bubble gum and duct tape mechanic but geeze!

[Tom R]

Turn it 90 degrees - if you still feel vacuum, you have a non-metered leak. Otherwise it's fine.

[Tom R]

As stated earlier, you've effectively set your petcock to prime with the bubble gum. If the prime check valve is still working, you'll flood your crankcase with gas.

[gsvol]

As stated earlier, you've effectively set your petcock to prime with the bubble gum.

if i pull the hoses off the petcock with the gum on it no gas comes out

[Tom R]

If it was after you turned the motor over, then prime doesn't work. It doesn't on mine either.

[gsvol]

i just want to know if i can ride it till new one gets here Tuesday

IT RUNS GREAT!!!!


no gas leaks coming from fuel line or vac line while its sitting

[bccap]

If you're going to run it. Make sure there is no gas in the oil....