DRZ400SM bad mileage?

**carver** · 28th April 2015, 18:20

Sounds like my old DRZ-SM

does it look like this?

https://www.youtube.com/watch?v=UQhvFTJGbOA

I used to get about the same mileage to a tank, but I raped it everywhere

**Phil.T.Tipp** · 8th May 2015, 15:53

I know mine's running a bit rich and the inline fuel filter is due for replacement (it leaks if you wiggle it, oooerr) and I get 150kms-ish til reserve, or more accurately 150kms-ish til squeaky bum time cos reserve is a mere pre-metric thimbleful, more commonly referred to as 9/10ths of fuck all. I have the 3x3 hack, full FMF Powerbomb pipe and can, and haven't checked the jetting [cos I is lazy].

But I digress. Sounds like you're losing fuel via the overflow in the carb, could be a poorly-adjusted float or a stuck needle valve due to crap in the fuel or sticky evapped fuel deposits.

Which carb do you have on the bike? I take it, it's the Mikuni? Apparently the o-ring in the valve seat goes bad too, maybe worth a looky-see.

Good luck O Brother of Braaaap.

**biketimus_prime** · 13th May 2015, 11:17

Mine gets about 150km to a tank before switching to reserve.

Definitely speedo issue as mossy has said. The compensation function should be 100% (obviously).
Did you say you changed the compensation to 100? Hence why it read 18km and now 35?

If you double your current mileage then you'd get round 140km
That's your issue solved right there! Was just speedo compensation.

Or am I missing something

**neels** · 13th May 2015, 13:46

I'll add another vote for 150k to reserve, on a 400e, haven't been brave enough to find out how far it goes on reserve

**biketimus_prime** · 13th May 2015, 21:56

Originally Posted by neels

I'll add another vote for 150k to reserve, on a 400e, haven't been brave enough to find out how far it goes on reserve

I will find out for us

If I'm in my neighbourhood next time and low on fuel I'll keep going till I run out and see. Hopefully it's only flat ground and/or downhills when I do stop!

**Fern** · 15th May 2015, 11:00

to change from kms to miles or vice versa, hold down the select button for at least 7 secs.

Mine is default mph and I change it to KMS. It resets when I disconnect the battery. I don't trust the accuracy of the speedo though, and get the true mileage off the GPS

**400sm** · 20th May 2015, 15:48

Originally Posted by enth

Hi All,

Picked up a 2010 DRZ400SM the other week. The bike is supposed to be getting roughly 170-220km to a tank but I'm only getting around 60-70km before I need to turn it to reserve.

Has FMF pipe, 3x3 airbox mod and a rejet. I've been trying to do some research online as to why it's getting bad mileage but nothing solid comes up. Still feels great to ride, powerful and torquey. I've checked the spark plug to see if it's running hot but it looks normal.

Any ideas as to why I'm getting such low mileage with it?

Stink Bro

Modified 400SMs usually have better economy than clogged up stock ones.

1. You need to meet someone with a correct odometer and go for a comparison fang with this person.

2. Tell us the jet sizes in your carb.
... And check the model of the carb.

**Dr z-tard** · 31st May 2015, 22:42

I have a 2013 sm and get 120ks before reserve and havn't run the reserve dry, it's modified and it only uses that much gas because I ride like a dick....

**enth** · 1st June 2015, 22:18

I had the compensation set to the max 130% and the reading was still out, setting it to 100% made it even worse. But it doesn't matter any more because the bike has since been stolen.

I got myself another one, '06 with 20,000 KM and the odo reads perfect. Filled it up and reset the odo, rode home and checked on Google maps and it gave me the same distance I travelled on the bike.

**biketimus_prime** · 3rd June 2015, 12:15

Originally Posted by enth

I had the compensation set to the max 130% and the reading was still out, setting it to 100% made it even worse. But it doesn't matter any more because the bike has since been stolen.

I got myself another one, '06 with 20,000 KM and the odo reads perfect. Filled it up and reset the odo, rode home and checked on Google maps and it gave me the same distance I travelled on the bike.

Did you buy that one in browns bay with all the mods?
You cheeky shit, he made us think it went in for a warrant hahaha

**400sm** · 5th June 2015, 21:07

Originally Posted by enth

I had the compensation set to the max 130% and the reading was still out, setting it to 100% made it even worse. But it doesn't matter any more because the bike has since been stolen.

I got myself another one, '06 with 20,000 KM and the odo reads perfect. Filled it up and reset the odo, rode home and checked on Google maps and it gave me the same distance I travelled on the bike.

That's quite a novel approach to get better fuel mileage !

The boys (me 400sm 10.5L, Jny drz250 11.5L) once rode from Te Awamutu to Napier (283km on odo) on a tank.
We both conked out, outside Napier airport.
That's approx 27km per litre of super for the 400.

Your bike should get similar, but we were TRYING.

**TheDemonLord** · 8th June 2015, 21:44

Have you tried changing out of First gear when going for a ride?

I find my 'Busa does the best mileage when in 6th

**mossy1200** · 8th June 2015, 21:57

Originally Posted by TheDemonLord

Have you tried changing out of First gear when going for a ride?

I find my 'Busa does the best mileage when in 6th

I have done 500km on my bike now.

Only issue is I have filled it 4 times

Its got a full tank now though so its really 3 times

Wait it came with a full tank

I know where theres more service stations though

**Big Dog** · 8th June 2015, 23:34

Originally Posted by TheDemonLord

Have you tried changing out of First gear when going for a ride?

I find my 'Busa does the best mileage when in 6th

So... You just wanted to casually tell us you have a busa? Haven't got past the honeymoon yet eh?

Lol I had nine for nine years, sold it over a year ago and I still like to name drop.

Stupid phone / Tapatalk, apologies in advance.