Fuel consuption

Rassy · Post by **Rassy** » Mon Mar 15, 2004 11:21 am

hay guys just wanted your thoughts on this mater.

Me car a month ago was fine an was getting about 500-650km out of a tank. An two weeks ago I noticed that it semed to use alot of fuel. So I filled the tank up last week an hit the trip meter. I got a shocking 250km out of that tank.

Now there was one day where I did a bit of hard driving for an afternoon nothing mager. The only mods that the cars has is 3'' exhust an a supra jz1 or somthing coolier + bov.

now on top of that ive had problem with timing (the manual advance has being a pain in the ass) an cant get any vacume advance, thefore not haven much power before boost. (turbo is TC05) which will have 2psi 1800 RPM an 7-8 at about 3500 RPM

any help would be good if anyone can be botherd reading all that crap.

Cheers Rassy.........

P.S. i tried to make it short

SIRIUS · Post by **SIRIUS** » Mon Mar 15, 2004 2:56 pm

geez thats almost as bad as my valiant.... rofl
but wouldnt know what could cause such a huge change in consumption...sorry....hope u work out what it is

decoy · Post by **decoy** » Mon Mar 15, 2004 4:42 pm

Rassy wrote:I got a shocking 250km out of that tank.

i can't even think of a reason that would make that possible! yes i can... hole in the fuel tank?

Post by **Alspos** » Mon Mar 15, 2004 5:52 pm

Fuel leak somewhere??? Handbrake on??? Something is wrong!

Mine got 370 km's on the weekend country driving and I have a touch over half a tank left. Golf clubs and all in the back and a few minutes of circle work too :D

Rassy · Post by **Rassy** » Mon Mar 15, 2004 7:06 pm

Sorry guys there no leak in the fuel tank or anywhere for that mater an to top it off I haven't noticed any black somke out the back.

I think its got alot to do with my timing, was wondering if any one had a grafh or somthing showing how the advance timing cure is ment to look like.

Cheers Rassy...............
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scum · Post by **scum** » Mon Mar 15, 2004 8:04 pm

you havent been eating alot lately have you? :D

Xentro · Post by **Xentro** » Mon Mar 15, 2004 11:23 pm

Maybe you had a visit of a fuel thief?

Seen any guys walking around with hoses & gas tanks? :D

CussCuss · Post by **CussCuss** » Tue Mar 16, 2004 12:02 am

geezus 250k's even i got 400k's running on a microtech base map, theres a serious problem there

decoy · Post by **decoy** » Tue Mar 16, 2004 1:55 pm

Xentro wrote:Seen any guys walking around with hoses & gas tanks? :D

hehe, u never know.

Starion VR4 · Post by **Starion VR4** » Tue Mar 16, 2004 5:46 pm

A few things to check, no vacuum lines off, sounds like your dissy has shit the advance, put a timing light light on it and watch as the engine slowley revs, does the timming marks get further apart? , disconect your vcuum advance unit and test to see if diafram is broken( Wouldn't want to get staz pregnant). Let me know how you go. :beer

Rassy · Post by **Rassy** » Tue Mar 16, 2004 6:37 pm

Well what are yar trying to say, that Iam a fat barsted now!
I haven't noticed any morons around with little jerry cans.

I dont think she'll get pregnant cause the diaframs working, I just cant get the right combanation of air line to get the right amount of vacume through the rev rang. One has to much sucky sucky an the others seem to have not enough, ( I hate that when they dont have good sucking power) Yes yes any way, the car, huummm yer got no idea. I think im just going to look the timing on 15' BTDC.

As for the vacum hose it dosn't seem to much but retard the carp out of it when it on boost but ive got no idea how much for i dont have on of those little tester thing'es. any way better stop dribaling iam making a mess.

Cheers for all the input

Rassy...........
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Rassy · Post by **Rassy** » Thu Mar 18, 2004 7:15 am

ha guys, looked the dissy lastnight an took the vacum hose off her an just have it set on 15 deg BTDC an it prefures to run like that,

when the vacum was hooked up it wouldn't ping or anthing, the motor would just start brakeing down at about 3 grand an with out iany sucky sucky its alot happier, it must be a fricken dike.

Cheers Rassy..........
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Starion VR4 · Post by **Starion VR4** » Thu Mar 18, 2004 5:21 pm

what i wanted you to look for when you slowley reved the enging was to see if the mechainical advance in dissy was working, this could be your problem. :beer

Barney · Post by **Barney** » Thu Mar 18, 2004 6:33 pm

What about leaking injectors or injector seals.
maybe a fuel presure problem (to much presure)
check the wiring on ya air flow meter.

Rassy · Post by **Rassy** » Fri Mar 19, 2004 5:32 pm

Yeah nar I now the mecanical advance is up the shit, (Im trying to see if I can get some new springs for it) an I cheacked the vacume advance an that works fine. What I cant get right is the actual advance curve. cause I don't know what vacume hose has the right sucky sucky for my babys diafram.

Its making good power with the timming advanced up a bit (25+) an then what ever it retades itself to when on boost. But in the same breath it brakes down at 4.5RPM in every gear.

Time for an aftermaket computer, any donation??? :D

Cheers Rassy............
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