DT125R ARCHIVE

woll · Guru

How many miles to a tank?

Seiki · Admin

No idea , but I'm filling up way too much , keep getting paranoid i'm going to run out in the middle of nowhere with no dosh lol

conn1987 · DTR Senior Member

i think i done about 200 km on £5 so not bad,iv got the pv but im still restricted everywhere else

-- Edited by conn1987 on Monday 12th of April 2010 12:37:13 PM

fray · Guru

I get about 70miles to the reserve

scott bee · DTR Respected Member

same ^^^^

woll · Guru

yours both deres?

scott bee · DTR Respected Member

yes mines fully deres

fray · Guru

yep mine fully de restricted aswell!

Peter T · DTR Newbie

i get at least 110 miles before i switch to reserve.

RudiRulez · DTR Senior Member

i get 60mpg, works out bout 85miles before i hit the reserve and then about 20miles on the reserve, if you want to save petrol keep it below 7k simple as.

DTPOWER · DTR Respected Member

180 km without reserve.. and trust me no eco driving ! lol

Dickhead · Nonce

if i try my best about 70 miles to a brimmed tank with reserve if i rag it about 30 tops

satelliteone · DTR Senior Member

**** the bed chaps!.. i get a good 100+ miles with out reserve another 30-ish miles with.

im like 16st too!.. and i dont grandad it around either! best i got out of it was 109 miles. around 100 miles to a 9 quid of fuel. (no reserve)

I have a 17th front sprocket, standard rear, on a Vee Rubber tyres. PSI around 25-30, chain is IRIS gold.

why the huge difference is beond me.

craigbulmer · Guru

yeah satone, i get the same as your.
im 17 n half stone (im not that fat!!!!) i dont grandad it, i have standard sprockets, IRIS Xring gold chain .. bridgestone tyres .. i get over 100 miles to reserve same as you.

i swear ive already posted that on here haha but oh well.

woll · Guru

wtf why is mine so low :( i blame the road round here all the roads round here your always accelerating or slowing down. Never just cruisin round.

satelliteone · DTR Senior Member

i get that on what ever road im on..cornwall full of hills..lol. worst i get is 85 on a tank with out res. deres bike too. Big chaps saves fuel ya know.. coomon guys.. eat pasties and ya getter mpg.. hahah

i really dont know why, unless ur engine is on it last legs like low compression, rings are blowby. The carb is foobar or ya got brakes that hold u back. i dont know. the only other thing is leak in the reeds. Old reeds will not seal on the back compression very well..reed block has stoppers. these need to be at the right hight. does show u in the manual. Crank seal leak also.

Best way is do a plug chop, and a compression test. Ur plug should just be a thorn brown in colour, just v slightly greying. NOT a very light grey! or worst a white! Black sooty type is over fueling. Make sure on a plug chop the engine is well hot and been run for 10 mins on a open road, give it beans for a mile or so 6th gear, pull the cluch in , roll to a stop, engine off, pull the plug out.

bad ecomomy usually over fueling, low compression. low octane fuel. flat tyres! lol

element · DTR Senior Member

I get 65 miles out of a £5. full tank used to be £12 and that was deffo good for 140 miles.. 04 dtre fully derestricted + dep/bigone tail no baffles..

woll · Guru

ta sat one will have a fiddle on friday, i have a bad feeling its going to be low compression :(

element · DTR Senior Member

if it lacks power on hills then compression is prob shot...

-- Edited by element on Friday 16th of April 2010 09:58:09 PM

woll · Guru

Well i dont know why but this time ive got 68 miles so far to this tank without reserve, only thing i can think of is the fact that i did a few long runs on this tank of fuel did 50 miles the other day on it, where as i normally do 5 miles a day to work and back (2.5 each way) and fuel station is only 6 miles there and back.
Oh and when i did then 50 miles on the way home it had a dicky fit, started spluttering , then sumat started rattling round in my zorst, the temp rose to 1/2 norm sits around 1/4 then it went reaaallllly loud as if it was going to sieze then went fine backfired a few times then was fine all the way home.
Just gona check the spark plug today make sure it isnt running lean or too rich, 2 stoke oil is going down ok and crank case has plenty of oil in.

element · DTR Senior Member

lol sputter, rattle in exhaust :o, temp shoots up, sounded like it was gonna sieze, backfires few times...

rattle in exhaust is normally only one thing... your piston rings!

backfires are from unburnt fuel..

overheating is either a failure on the coolant side or about to sieze from running very lean (which also would cause stutter/hesitation on accel)..

hasnt it long been rebuilt?

-- Edited by element on Saturday 24th of April 2010 11:24:44 AM

-- Edited by element on Saturday 24th of April 2010 11:27:02 AM

woll · Guru

Well according to last owner its never been rebuilt i thought that it would be a ring as well :(

fray · Guru

My mpg seems to have changed now. Filled her up strait after i changed the head gasket and fitted freshly skimmed head on thursday afternoon and i did 90 miles before i filled up again and hadnt reached reserves, wasnt far away tho.

Next time i fill up im gonna set the trip clock and run her till shes cuts out on reserves and work out my new mpg. It was about 37mpg last time i worked it out i think, was getting around 70 miles from brimmed to reserves.

fray · Guru

I brimmed my tank the other day and i got 100 miles till it spluttered at reserves.

craigbulmer · Guru

my bike is absolutely guzzing it down now :( getting like 35-40 mpg :( pinned powervalve now, cant afford to keep it but i dont want the piston tapping like it does :(

woll · Guru

gutted for you craig i've got 90 miles to this tank only turned reserve on 6 miles ago, turns out its the short journeys the bike doesn't like :)

craigbulmer · Guru

maybe because you hoon short journeys? and not long ones as much?

woll · Guru

Nah i pootle to work lol give it more on long journeys lol

MisterDave · DTR Respected Member

My fueling is terrible I have ran out twice and thought it was regular breaking down, my bike doesn't seem to like res at all.
I get silly low MPG where can I get compression tests and things done?

craigbulmer · Guru

i thought you just had feck loads of work done?
take it back to the garage