Poor MPG

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

bb thats lined up fine, what are you on about?

it should be a relatively strong puffing, if its weak then there may be a collapsed baffle in the system which will cause a big loss in power.

yes it is possible to put them in the wrong order but the idle will be a bit stuttery if you do that.

from top left looking from the passenger side in an anti clockwise direction, 1,3,4,2

chances are the cooling system is in a bit of a bad way which will cost power and eventually kill the engine, many have died due to neglect of the cooling system.

On the motorway up to about 120 mph it will be on the 1st line, when you go above 120 it will increase slightly but never hot enough to kick the fan on.

round town it will go up to the 2nd line and the fan will kick in, but it shoudl be at least 5 mins between each time the fan comes in.

If you start it from cold and let it idle it should take at least 20 - 30 mins for the fan to kick in. When it kicks in it should drop back down to nearly the 1st line within about 20 seconds.

Forum Moderator Joined: 18 Feb 2004 Posts: 7432

whys that bb?

unless the number of teeth on the belt is an exact multiple of the number of teeth on the cam pulley, then the mark will 'creep' relative to the pip on the pulley.

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

neal you ruined my humiliation plans.

Forum Moderator Joined: 18 Feb 2004 Posts: 7432

whoops sorry Embarassed

Level 7 User Joined: 11 Aug 2006 Posts: 206

wel i have a new back box and decat pipe and the only old box is a stainless after market middle box which is about 3 year old, and now i just been out in the car after checking all the timing and the stupid temp gauge doesnt work now! what have i done? the temp was usually between 2nd and third big line and the fan coming on at the third line

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

3rd line is classed as the 2nd line, the bottom c shaped bit isn't clased as anything apart from the bottom.

temp sender is the brown one on the side of the head.

Level 7 User Joined: 11 Aug 2006 Posts: 206

i see what u mean about the c shape now , i dont understand why the temp gauge int workin now il have a look prob have to get a new 1? wel so far the timing is good and the exhaust is clear , what next? Smile

Level 7 User Joined: 11 Aug 2006 Posts: 206

whats it more likely to be , electrical or mechanical?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

check the sende ront he sie of the head, the wire might have broken, if not give it a wiggle and see if it works.

as for the engine impossible for me to say, it could be so many things.

you cheanged the fuel filter on it?

Level 7 User Joined: 11 Aug 2006 Posts: 206

nope wheres the fuel filter? wil a cheapo little 'performance' fuel filter from the accesory shop do the job?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

no get the right one from a factors or even halfords, its at the back of the car on the drivers side, if you look in project Y's progress report you will see the bracket ad new filter.

I have taken some off and they are choked solid with rust

Level 7 User Joined: 11 Aug 2006 Posts: 206

cheers thats my next step then wil try that soon as i can

Level 7 User Joined: 11 Aug 2006 Posts: 206

i see on project y the fuel filter is under a metal bracket , is it the same on mine and how far up the car is it? i expect petrol wil start pissin out everywhere when i take it off whats the best way? Smile

Forum Moderator Joined: 18 Feb 2004 Posts: 7432

its under the car on the drivers side, just in front of the rear wheelarch. You need to remove the whole bracket, then remove the filter from the bracket with it off the car.

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

theres no need to remove the bracket. undo the 10mm clamp bolt, then wiggle the filter out.

and yes petrol will come out, unplug the fuel pump relay or if its a ph2 unplug the fuse in the aux fuse box and crank it over, this will releive the pressure in the system.

Level 7 User Joined: 11 Aug 2006 Posts: 206

well the fuel filter has now been changed no joy there, what could i try next? any sensors that i could try cleaning? my mpg is also still a crap 29 , would a diagnostic thing show anythin u think Confused

Level 7 User Joined: 11 Aug 2006 Posts: 206

just reading some old posts and it says if u disconnect the battery u have to reset the ECU?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

if you dissconnect the battery it has already reset it.

any decent car will run perfect after a reset as there shouldn't be any adaption values to learn unless somethings wrong!

i think you need to let someone who knows what they are doing look at it in all honesty.

Level 7 User Joined: 11 Aug 2006 Posts: 206

ok, so what kind of performance is every1 else gettin from their cars? as a guide , should i take it to a tuning place with rolling road or somethin?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

heres some vids of mine, bear in mind sticky clutch and dodgy headgasket

http://www.renault-turbo.com/chris/03-10-04_2041.mp4

http://www.renault-turbo.com/chris/04-10-04_1811.mp4

http://www.renault-turbo.com/chris/drive%20off.mp4

http://www.renault-turbo.com/chris/drive%20off.mp4

this one I hit 80 before braking

http://www.renault-turbo.com/chris/in%20car.mp4

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

jim have you made sure the throttle is opening fully? get someone to floor the throttle and then see if you can open it more by hand. simpel but common over sight!