Wild Dog Adventure Riding

Technical Section => Make / Model Specific Discussions => Suzuki DR & DRZ => Topic started by: MildDog on March 19, 2013, 06:46:19 pm

Title: Liquid dripping out of overflo pipes
Post by: MildDog on March 19, 2013, 06:46:19 pm
When my DRZ stands at night there is a little puddle of fuel on the floor in the morning, underneath the overflow pipes (they run through where the swing-arm attaches to the bike).

Ideas on where that's coming from?
Title: Re: Liquid dripping out of overflo pipes
Post by: WabbitKiLR on March 19, 2013, 07:02:58 pm
Fuel? That should be the pipes that excess oil from the crank case breather valve drains out of. The valve breathes the oily moisture into the air box and from there it is combusted again through the carbs and into the engine. If too much accumulates, it dams up and drains through the pipe down onto the ground.

I think.

But fuel? Something is up with that ???
Title: Re: Liquid dripping out of overflo pipes
Post by: Torque Curve on March 19, 2013, 07:09:30 pm
Fuel? That should be the pipes that excess oil from the crank case breather valve drains out of. The valve breathes the oily moisture into the air box and from there it is combusted again through the carbs and into the engine. If too much accumulates, it dams up and drains through the pipe down onto the ground.

I think.

But fuel? Something is up with that ???

No the DRZ breathes through hoses from the barrel and the tappet cover into a collector box and then out towards the battery, behind the left side cover, where it makes a mess over the subframe. It does not feed back into the airbox. Are you sure its fuel under your bike? If your air filter is over-oiled this too will drip out the bottom of the airbox, onto the swing arm and from there onto the ground.
Title: Re: Liquid dripping out of overflo pipes
Post by: WabbitKiLR on March 19, 2013, 07:11:40 pm
Whoops. I was thinking of the KLR's system :-[
Title: Re: Liquid dripping out of overflo pipes
Post by: Woestynhond on March 19, 2013, 07:54:23 pm
May be from a busted o ring on carb drainscrew?
Title: Re: Liquid dripping out of overflo pipes
Post by: MildDog on March 20, 2013, 03:09:49 pm
May be from a busted o ring on carb drainscrew?

Saw this morning my fuel cock is leaking, so need to get a refurb kit. Not sure how that's draining out the overflow pipes.
Title: Re: Liquid dripping out of overflo pipes
Post by: Firecoast on March 20, 2013, 03:11:15 pm
Possibly dirty carburetor as a result of fuel going off.
Title: Re: Liquid dripping out of overflo pipes
Post by: buzzlightyear on March 20, 2013, 03:18:56 pm
Leaking floatvalve in carb causing carb to overflow?
Title: Re: Liquid dripping out of overflo pipes
Post by: Woestynhond on March 20, 2013, 03:41:47 pm
Pleas do your self the favour of checking your oil for petrol as well!!! If gas tap leaks and carb overflows fuel can leak through carb into intake manifold and past piston rings into gas!

Happens if the float valve does'int seal properly !
Title: Re: Liquid dripping out of overflo pipes
Post by: sidetrack on March 21, 2013, 11:46:58 am
Leaking floatvalve in carb causing carb to overflow
What he said
Title: Re: Liquid dripping out of overflo pipes
Post by: lecap on April 15, 2013, 09:43:32 am
The fuel tap is the primary culprit. Should close when engine is switched off. If you have a manual tap you must always close it overnight.

The float needle valve will often leak very slightly if the tap is not closed and fill the float bowl until it overflows. Telltale signs: Poor starting (or sometimes "good" as the bike will start easily without choke where it should require choke :o) Fuel puddles. Fuel in oil.