Gas tank fuel line quick disconnect replacements / upgrade

[surfguygrif]

I have an update with links to replace/upgrade the failure prone 748-998 (maybe more) Superbike plastic quick disconnects for the fuel pump lines under the tank. These commonly break at the worst time leaving you stranded, lengthen a routine maintenance or worse, dumping fuel all over a hot motor/header

Some of the older model numbers and links have gone away.


This website sells the OEM CPC Colder Products connectors that Ducati sourced for these bikes for:

CPC Colder Products - Quick Couplings



The below sku's are what's needed to upgrade the cheap plastic units with metal units for both lines.






WHAT YOU NEED TO ORDER.
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2 x LCD10004 - 1/4 NPT Valved CPC Coupling Body (LCD10004) = $21.10
2 x LCD23006 - 3/8 Hose Barb Valved Elbow CPC Coupling Insert (LCD23006) = $21.78
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Sub-Total: $42.88
Table Rate Shipping (Best Way): $8.50
Total: $51.38

Be careful buying this stuff on eBay, many of them are the same shape but not rated for fuel or high pressure (and are marked up, these guys can sell you direct at a lower price)

Be sure the get the valved models so no gas leaks out during your servicing and the barbed hose couplings.

I swapped them this weekend and they work perfect, nice seal, no leaks, cheaper then the dealer for better parts (metal).

While these CPC units come with the O-rings, McMaster-Carr is a good source for proper replacement O-rings, amongst other things. You can purchase a package of 100 for US $5-8.

For good measure, I recommend doing this easy/cheap safety mod next time you schedule anything that requires pulling off the tank.

Have fun!


__________________
1997 748
1995 900SS/SP

[.android.]

Thanks for the great summary - I just ordered the required parts and will take care of this while replacing my belts next month.

[Deazy]

748 through the 998? this is a fix for the 996 too if I'm following?

[super dooper]

Yes it is a fix for the 996 as well, so long as you have the plastic fuel qd's.If you have the non qd's then you will have to drill your own 1/4 npt threads.

[DukeDesmo]

The metal CPC fittings are good, but be sure that the ones you order have viton 'O' rings (I believe you should add the 'V' suffix to the part no.), not just the visible and easily replaceable 'O' ring on the male fitting but also the internal 'O' ring on the female (tank) connector as the non-viton rings swell when in contact with fuel.

It may take a few years and the external ones will probably get swapped before they swell to the point that it leaks (which mine did) but if the one in the female fitting swells it can intermittently block the fuel flow whilst you're riding - this happened to me last year and I ended up stranded and waiting for the recovery van, it then took me a while to find the fault as once disconnected and reconnected it worked again for a couple of miles until it broke down again.

You can replace the internal 'O' rings but you need to remove the fitting from the tank and then pick the 'O' ring out the back with a dental pick.

All this can be avoided by getting the correct 'O' rings...

[ZDM]

Thank you for the info..my 2003 999 actually has metal fitting in the fuel pump nd clamped on the end of the line. You remove a hold down plate and ive them a 1/4 turn and they release....w/o leaking, so they are not bad, but it's a PITA fiddling w/ the hold down plate....be nice if somebody made and in line quick release fitting so I could keep the line connected at the fuel pump....

[mainframe]

Originally Posted by ZDM

Thank you for the info..my 2003 999 actually has metal fitting in the fuel pump nd clamped on the end of the line. You remove a hold down plate and ive them a 1/4 turn and they release....w/o leaking, so they are not bad, but it's a PITA fiddling w/ the hold down plate....be nice if somebody made and in line quick release fitting so I could keep the line connected at the fuel pump....

I don't know what kind of room you have under the tank of the 999, but the female NPT fitting is also available in a barbed fitting and the male is available with a straight barb in addition to the 90. You could essentially just hack your fuel lines and clamp these in. Instant in line quick release.

[94CobraR]

This is definitely interesting to me. Fuel was starving the engine. Only idles. Thought it was the female quick disconnects. Pulled the both, changed the o-rings. Reinstall everything, test drive, voila. Nice.

Two days later, exact same thing again. I'm stumped. If I push the valves in on the female side (tank side) and rehook everything up, it runs again. Almost like the males aren't pushing in far enough on initial contact???

Originally Posted by DukeDesmo

The metal CPC fittings are good, but be sure that the ones you order have viton 'O' rings (I believe you should add the 'V' suffix to the part no.), not just the visible and easily replaceable 'O' ring on the male fitting but also the internal 'O' ring on the female (tank) connector as the non-viton rings swell when in contact with fuel.

It may take a few years and the external ones will probably get swapped before they swell to the point that it leaks (which mine did) but if the one in the female fitting swells it can intermittently block the fuel flow whilst you're riding - this happened to me last year and I ended up stranded and waiting for the recovery van, it then took me a while to find the fault as once disconnected and reconnected it worked again for a couple of miles until it broke down again.

You can replace the internal 'O' rings but you need to remove the fitting from the tank and then pick the 'O' ring out the back with a dental pick.

All this can be avoided by getting the correct 'O' rings...

[Ducatierv]

Great post I'm interested in a set for my 999R Racebike after my line came loose and eventually came off while I was tucked down and at full belt ( 150+ mph) along the back straight of Road Atlanta (Walter Mitty meet) several weeks ago. I was VERY lucky nothing happened to me but now I need to change them as the OEM fittings sux. I have seen a 749RS stainless set that work but have no idea where to find them.

[couchflyer]

Desmo Times sells the Chrome Plated Brass Quick Disconnects, I know they aren't stainless but these work well.