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smudge67999

Active Member

• Apr 12, 2014

• #1

hi guys. if any one can throw any light on this please been working on it for a bit so will explain whats going on and what ive done. my disco1 1994 3.9v8 is still heavy on fuel and this is what ive changed to improve. new lambas. plugs.leads .lucas distributor and arm. fuel filter airfilter. oil.oil filter. fixed vaccume advanced. checked timmimg.6degrees b4tdc as mine is lpg. tested airflow meter disconnected it and it cut out.so fine. so only other thing i can think of is that fuel temp sensor what fits in the fuel rail.which is currently running at 38c should it be higher. .i have put it on my m8 immisions tester and still a little high. oh also changed thermostate and i can keep the engine most of the time at 1000 rpm as its manual.so not heavy footed. anyone throw any light on it.i know theres a cat resistor but im running the right one.

 

zen

Well-Known Member

Events Planner

• Apr 12, 2014

• #2

what do you class as heavy on fuel?? 12mpg is common

 

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smudge67999

Active Member

• Apr 12, 2014

• #3

6mpg/8 i thought i would get around the 12/14 mark

 

zen

Well-Known Member

Events Planner

• Apr 12, 2014

• #4

petrol or lpg figures??
lpg single pooh point or sequential?

 

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smudge67999

Active Member

• Apr 12, 2014

• #5

single point omvl millenium system. runs grest on lpg and i get between 85miles/95 miles to 30litres just under 19.00 quid. which not bad. but need to get the fuel side better.

 

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smudge67999

Active Member

• Apr 12, 2014

• #6

and thats round town. manual aswell.

 

zen

Well-Known Member

Events Planner

• Apr 12, 2014

• #7

engine ecu coolent sensor?
dodgy injector/s?
vac leak on fpr (causing max injector pressure all the time)?

what do the plugs look like? black rich or nice and tanned??

 

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smudge67999

Active Member

• Apr 12, 2014

• #8

more to the black side. lamba b is comming up rich on my ecu mate both lambas are new. see i wondered if i was to fit a green tune resistor and disconnect the lambas as ive been reading artical on the tune resistor. only thing is i cant find mine. just wondered if it would be better on fuel.

 

zen

Well-Known Member

Events Planner

• Apr 12, 2014

• #9

blocked cats??

i would rather find reason than try to bodge..

try coolent sensor etc first...

 

wangie46

Active Member

• Apr 13, 2014

• #10

Agree with zen check coolant sensor or just replace, but don't use inter motor sensor as they is ****

 

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smudge67999

Active Member

• Apr 13, 2014

• #11

hi were does the coolant sensor fit.

 

listerdiesel

Well-Known Member

Events Planner

• Apr 13, 2014

• #12

Just pulled the engine and trailer up to Shildon and back, 200 miles each way, 3.5 tonnes, 10.13mpg on LPG, Thor V8, Zavoli multipoint LPG.

In money terms that's equivalent to about 19mpg based on £1.32 a litre.

Peter

 

Last edited: Apr 13, 2014

wangie46

Active Member

• Apr 13, 2014

• #13

On passesanger side front of inlet manifold

 

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smudge67999

Active Member

• Apr 13, 2014

• #14

[ok i look tomorrow thanks