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um, flooding? too much fuel pressure? WTF!

Started by _oikurtman_ , Sep 19 2006 06:59 PM

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22 replies to this topic

#1 _oikurtman_

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Posted 19 September 2006 - 06:59 PM

i was just at the servo and decided to fill the torry right up for the week as petrol was reasonably cheap. I filled it right up, more than usual and took off. 50 metres down the road it just died.

Still had spark. Pulled air filter off and found the carby filling up with petrol. The jets were still dripping, and the front butterflys had a fair bit of petrol sitting on top of them.

It eventually started by holding my foot flat to the floor. I got it home but as soon as a let go of the throttle it died.

I'm almost certain its got something to do with the extra fuel in the tank, as well as a part i removed a few weeks ago. It was that UFO shaped thing just in front of the carby, running in the fuel line, and has a second little pipe sticking out of it which i think goes to return line? Wasn't sure, got told to remove it.

Any help would be great as I have to drive the bastard to work tomorrow... :furious:

Cheers.

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#2 _LX8VD69_

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Posted 19 September 2006 - 07:15 PM

i doubt it i more likely think a bit of crap or something must have blocked your needle and seat and holding your float high

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#3 _oikurtman_

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Posted 19 September 2006 - 07:29 PM

ok. well its a 600 holley. how do i fix/check that?

cheers.

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#4 _LX8VD69_

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Posted 19 September 2006 - 07:40 PM

ok on the front of your carby you will see the fuel bowl, on the top in the middle is the the needle and seat, it will look like a nut with a screw in the middle. undo the screw 1/4 of a turn and then undo the "nut" if you keep turning it the whole thing will eventually come loose, all you need to do is pull it up and when you get it out youll notice how theres what looks like a tube with the sides cut out with something inside of it, make sure that the little thing moves freely, if so then put it back together, reset the float and hopefully it should be all good, good luck and if im wrong well then youve learnt something new :spoton:

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#5 TerrA LX

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Posted 19 September 2006 - 07:57 PM

go to the holley web site there are full tuning instructions there.

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#6 _oikurtman_

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Posted 19 September 2006 - 09:41 PM

Had a look on the Holley website. It says a whole lot of stuff about inverting the fuel bowl and adjusting the float tang to the point where the float surface is parallel to the fuel bowl surface. :blink:

No Idea!

Might just try what LX8VD69 said... I get how to check the needle and seat (I think) but still not to sure about how to reset the float level... :huh:

Cheers.

Edited by oikurtman, 19 September 2006 - 09:48 PM.

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#7 Tiny

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Posted 20 September 2006 - 04:48 PM

You'll need 2 people to do this!
Unscrew the little bung on the side of the float bowl and start the engine ( turn on the fuel pump if its electric). You should see fuel JUUUSt trickle out the hole if the level is right. If it pours out its too high, if nothing comes out its too low.

TO adjust: Use teh correct size screwdriver and spanner. Release the locking screw witht eh screwdriver.. then turn the nut to raise or lower the level as needed.. then lock the screw back down!

I dont know which way raises or lowers the level though!

Good luck!

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#8 makka

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Posted 20 September 2006 - 05:32 PM

clockwise to lower, anticlockwise to raise

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#9 Tiny

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Posted 20 September 2006 - 06:35 PM

knew SOMEONE would know

Good one

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#10 _oikurtman_

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Posted 21 September 2006 - 11:27 AM

yeah there was about three little bits of crap on the needle. put it back together, all sweet! (And I got to work on time!) :rockon:

Thanks for that info tiny, will do that this arvo. Had a go at the fuel level yesterday but wasn't sure where it was supposed to be.

Cheers.

P.S: I put a new speedo guage in the other day as my odometer never worked. It seems that I'm getting 4kms/L or 25L/100km. Is that normal? :huh:

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#11 Tiny

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Posted 21 September 2006 - 02:50 PM

Ummm.. if it's a worked 400 chev.. then yes.. ( thats around the milage i get from my monaro!!). Otherwise.. NO!!

Defintiely something wrong in your fuel system there mate, I'd suggest paying a little bit of money and taking it to a specialist who can tune the car propperly with the carby! Otherwise its just money out the tailpipe!

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#12 TerrA LX

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Posted 21 September 2006 - 06:44 PM

P.S: I put a new speedo guage in the other day as my odometer never worked. It seems that I'm getting 4kms/L or 25L/100km. Is that normal?

your running a 600 holley on a 253 eh?

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#13 _oikurtman_

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Posted 21 September 2006 - 07:19 PM

yeah, 600 Holley on 253. i know its a bit big but its the only working carby i have. worth getting it tuned properly? by a mechanic?

i just went for a run up the freeway... 100kms, used just under half a tank... :<_<:

Cheers.

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#14 makka

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Posted 21 September 2006 - 08:00 PM

half a tank by your guage or did it take 27.5L at the servo?

I got better economy than that when I had the 650 on mine

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#15 TerrA LX

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Posted 21 September 2006 - 08:05 PM

either switch to a smaller carb or wear lighter boots.

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#16 _oikurtman_

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Posted 21 September 2006 - 10:34 PM

put it this way, i filled it right to the brim on tuesday, and i've done about 180kms and the tank's nearly empty. hardly thrashed it at all! :huh:

that can't be normal!

get the mechanic to tune it?

cheers.

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#17 TerrA LX

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Posted 21 September 2006 - 10:48 PM

is it blowing black smoke?

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#18 _oikurtman_

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Posted 22 September 2006 - 10:04 AM

no smoke

could it be that the floats are set too high?

cheers.

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#19 TerrA LX

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Posted 22 September 2006 - 08:41 PM

if its running rich i would think it will be blowing black smoke.

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#20 MRLXSS

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Posted 22 September 2006 - 10:45 PM

lets put that into perspective I (makka) drove from Bendigo to sandown, over 200km, did my parade laps and stuff and I drove gto the servo and it took 30l, it was full when I left from bendi, thats pretty good

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#21 _oikurtman_

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Posted 23 September 2006 - 08:15 PM

thats amazing! i would go through at least a whole tank after 200 kms...

i reset my floats yesterday. time will tell if it made any difference :<_<:

booking it in for a gas conversion within the next few weeks anyway so i only have to put up with it for while, i hope.

cheers.

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#22 makka

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Posted 23 September 2006 - 08:40 PM

thats amazing! i would go through at least a whole tank after 200 kms...

I was suprised at how good it was as well, as I was into it a bit on the way down and chasing Knoath through the traffic so I didnt get lost!

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#23 TerrA LX

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Posted 24 September 2006 - 03:17 AM

thats amazing! i would go through at least a whole tank after 200 kms...

i reset my floats yesterday. time will tell if it made any difference

booking it in for a gas conversion within the next few weeks anyway so i only have to put up with it for while, i hope.

cheers.

i dont think you will get much joy.
if its not running rich and you get that economy then the motor is sad and i think you will get no joy out of stopping more frequently for gas than you are stopping for fuel now, i know, i sold a duel fuel VC commy with blue 253 for that very reason.