Yo Peeps!


Just fit my Safari 28L tank onto the DRZ and I've got a number of problems. The bike is struggling not to stall when stationary even after I've been driving a fair distance, and most times I've had to just keep revving it because it does keep stalling.

Not only that, but when I slow down to stop, the bike makes a number of pops and bangs which it certainly didn't before with the original tank.

Another thing, I ordered the blue tank but was assured that they were transparent no matter what colour it is... but I can't seem to see how much is in my tank unless I lift the lid up. Did anyone else get this kind of tank? I noticed people with the other colour tanks were transparent, so how come mine isn't?

I'm a tad worried about my problems.

Thanks guys,

Perhaps a breather for the tank is kinked, causing a partial vacuum?

Would you be referring to the tube that the fuel goes into after the petcock? I've noticed the tube has to bend twice and aim upwards to meet where the petrol needs to go next.

If that's the case, then maybe the tank has been fixed too low and I have to elevate it a bit upwards so the tube is straight and it needs to be flowing the fuel downwards?

I know that only white is transparent, other colors are solid. That is the reason I bought white/transparent one.

The problem may be that you did not clean your tank before use and it had some plastic flakes inside from manufacturing and these are now blocking your fuel tap? Or there is problem with tap? Remove fuel hose from carb and open tap -- does fuel flows out easily? Try both ON and RES.

On more thing I forgot to add to my last response. If you had original tank before, it had vacuum operated petcock (there were 2 hoses into petcock, one for fuel and smaller for vacuum to open the petcock when engine is running). New petcock is manual if you use the one that came with new tank, so -- did you plug the vacuum hose you removed from old petcock?

Aha! No, is this vacuum thing something that's screwed between the petcock and the actual original tank?

I just took the tank back off, cleaned it out (in case of plastic inside), had a look to see if I'd knocked anything else on the bike then fit back on... no such luck.

I think it has got something to do with the tube or the petcock like you said. Is it worth trying to put original petcock onto the new tank? Or just this vacuum piece you're talking about? Also, I've noticed that came with the new tank isn't as spacious so I'll try fitting the old tube on as well, incase simply there isn't enough room for enough fuel being pumped in.

If you have 2007 UK Sm then probably you also have one additional device called PAIR valve that may not be listed in Clymer manual.

I found a few pics from the net.

This one shows vacuum lines. You probably have similar setup (I have). The one that goes to left goes to PAIR valve. These 2 at right -- one goes to carb (back top) and another goes to fuel tank petcock. Basically vacuum is taken from carb and then this vacuum goes to petcock (and PAIR system). Since you now installed manual petcock then one vacuum tube is left over. You can't leave it open, then your carb will not work properly, I guess (I'm not a specialist, sorry). You need to push something into the tube end so it is "closed". It can be a small bolt or something like that. It must be air tight, so if vacuum is in the tube, it must not get any outside air throught the plug.




Here on next picture manual petcock is installed. Notice that there is a smaller tube visible on top of fuel line and it has a small bolt screwed into it? That is vacuum line that went to original vacuum-operated petcock and is now blocked and you should do something like that. So if you disconnected the smaller tube that went to your original petcock, just you will need to plug it's end. This vacuum tube is not needed for new manual petcock (original was automatcially opened/closed by vacuum is you started engine, now you'll need to manually operate petcock). The bike on this photo seems not to have the PAIR system, so there is no additional vacuum line that goes to left on first picture (only one line that comes from carb to petcock and now petcock end is plugged).

Awesome!

Job fixed thanks to your above message. That tube was just sticking out. Can't figure out how we didn't notice it was loose when we took the old tank off. Didn't even realise there was more than one tube attached to the original petcock.

I've put a screw to block the tube so that should be fine.

This is awesome. I can properly test this thing now

Many, many thanks my friend.

Glad you got it sorted out!