M

mudrunnerv8

New Member
hi all i bought a 300tdi with blown head gasket.had the head checked and skimmed and top end rebuilt.de-catted it and blanked egr valve off.the tank was empty so i put a gallon in it and ran it out to check the mpg to find to my horror im doing 20mpg and slow getting over 70 any ideas plz.im running standard 235/75/16 tyres no rooof rack it does have a 2" lift on it and the pump is in origanal possition
 
Not how to measure mpg half that gallon could still be in the tank the only true way is to fill it to the top drive round for a few days then refill to the top and take note of how many litres it took to refill work out your mpg from that number
 
thats down to empty tank i took sender out in the begining to see what was in there and it was empty and did the same afterwards.plus the other problem of getting to 70 pretty quick but will not go over 75 unless on a long run with foot to floor
 
Last edited:
Are you getting 20 mpg on long runs or short round town trips? You should get around 25-30 on a run but for short journeys in the cold weather 20 sounds normal .
 
well i dont a 115 mile round trip from torquay to liskard back home again and it cost 50 quid somehow i think im right in saying somethings wrong somewhere
 
Well thats about 35 ltrs for fifty quid and you did 115 miles so that works out about.................15 mpg :eek: They do say the lift will cause more drag but that still seems excessive. Have you checked the brakes aren,t binding ?
 
mudrunnerv8 said:
well i dont a 115 mile round trip from torquay to liskard back home again and it cost 50 quid somehow i think im right in saying somethings wrong somewhere
Click to expand...

I do a 125 mile round trip to work every week in my 300tdi auto,half of which is on single cariageway and half dual cariageway and I put £40 worth of fuel in,so your not too far off.
 
i managed to get 83 miles out of a quarter of a tank it is now down to 13mpg somethink in majorly wrong and if people a5re getting gthe same theres something wrong there aswell my last disco did 28-32 depending if round town or motorway.so going to chec k the turbo and the injection pump this week so any other ideas on what to check or change out would be handy
 
mudrunnerv8 said:
i managed to get 83 miles out of a quarter of a tank it is now down to 13mpg somethink in majorly wrong and if people a5re getting gthe same theres something wrong there aswell my last disco did 28-32 depending if round town or motorway.so going to chec k the turbo and the injection pump this week so any other ideas on what to check or change out would be handy
Click to expand...



i told ya £300 !! :D:D
 
If the tank was empty and you ran it until it stopped then there will be fuel in the tank now . You never get it all out . My 300 auto does 28 / 32 mpg 60/40 cooking oil
 
my 300 is ifted 2" and running 33"/12.5"/r15 tyres with lightbar and snorkel, and i'm still getting 29-30 mpg. It was down at 24mpg and slow, replaced the lift pump as it was leaking into the engine oil. Now its up on power and using less fuel
 
when was the last time i was serviced? oil, filters ect.. if it was a while back.. a good new service kit will often raise your mpg!
 
You must log in or register to reply here.

Similar threads

J
Tyres
Replies
10
Views
1K
jiloppy
J
J
overheating disco td5 auto
Replies
7
Views
713
Jaykay1987
J
DiscoSchemerTD5
Disco 2.. tyres??
Replies
6
Views
564
Hippo
Hippo
R
TD5 Down on Power After Head Gasket Repair
2
Replies
26
Views
4K
Kenbo
Kenbo
F
Disco TD5 fuel consumption question
Replies
9
Views
765
Hippo
Hippo