[yareckonillgetupthat]

just wondering if anyone has ever experianced the following, i was up in the bush went down a few decent drops maybe gave me petrol tank a new ding then got back on fire trail sort of track 100 ms down the track i just started loosing power like it wanted to stall or was running out of fuel tho it had a half tank, i nursed it to the main road by constantly hitting the gas and riding the clutch but it would bog over 2 grand i made it to the road and nursed it home once in 4th it would kinda cruise a long under 2 g but if i put my foot down it would bog and nearly give me whiplash . now its stuck in my garage it kicks over then idles for about 5 seconds then dies and if i try rev it it dies ive searched the forums i cant find nothing simaler any ideas anyone or links , ive checked dizzy and leads and all the carby hoses look ok and on it has a fairly new fuel filter and no crushed fuel lines thanks in advance

[bumstein]

Most likely blocked jets.. Pull them out and clean them up

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This was one of mine not so long ago.. Made it 350k's to Mt Magnet, the last 30km once I got off the hwy, to the homestead took me 5 hrs and a lot of beer

[Kymb0]

Shit in the carby?

[yareckonillgetupthat]

ive sprayed heaps of carby cleaner and i can still see it squirting petrol , do you have to remove the carby to get to the jets ?

[Reubs]

No, but you do need to pull it apart in-situ to get to the idle jet. You can leave the coolant hoses connected but the linkages on the front and the carby's top, including the main bolts have to be removed.

I have found the idle jets really do need to be pulled out and can take a bit of a liberal spraying of carby cleaner to unblock even when out. Make sure you can visually see a clean round opening down it. Took a casual 45 mins last time I did mine.

[yareckonillgetupthat]

ok thanks

[bumstein]

You take the two nuts off where I've got the screwdriver in the second pic.. Flathead in there and unscrew the jets.. Easy job really, make sure yours has a lot more hole than the one in this picture..

Can be worth dropping a little file out the bottom of your tank, replacing the inline filters and hitting the fuel lines with a little air just to make sure there isn't more gunk in the lines to block them up again as soon as you've done it..

If you do hit the lines with the air gun, blow from the front backward and have the fuel lines disconnected at the filter in front of your tank.. Then give a quick squirt of air from there back into the tank with the fuel cap off (that's important!!) to undo anything Blocking your pickup..

[DMAC]

Clogged fuel filter?

[yareckonillgetupthat]

can you do this while the carby is still on ?

[bumstein]

Fuel filter you can change while the Carby is still fitted.. It's usually located in front of the fuel tank within the chassis real near the rear right wheel.. Crawl under and you should see it..

[yareckonillgetupthat]

I've done the filter I ment the jets I got them loose I just cand get them out of the bottom of the Carby I need to get a magnet or something hopefully there magnetic , or tweezers maybe

[bumstein]

magnetic flat head screwdriver is the go..

Personally I take the carby off.. It's not hard to do and it's easier to access the jets, but others will prefer to do it insitu..

[yareckonillgetupthat]

I got the jets out cleaned them removed all the black shit that was in there it revs fine now but won't idle I think I've put something back wrong maybe the long spring closest to the jet holes any way atleast I can get it to a mechanic now thanks for the advice bumstein and everyone else

[Reubs]

yareckonillgetupthat wrote:

I've done the filter I ment the jets I got them loose I just cand get them out of the bottom of the Carby I need to get a magnet or something hopefully there magnetic , or tweezers maybe

You are talking about the main jets if the ones in the pics above - not sure if that is the proper term, but the ones in the bottom of the float chamber are not the ones which affect idle - the idle jet is a different beast accessible from under the top cover unscrewed with a small shifter or spanner. It is over an inch long and is a tube with tiny holes down the length of it.

[Nzkarta23]

Anyone got a pic of idle jet and where I need to look

[bumstein]

Best pic I can find.. This is it off memory, it's been quite a while since I played with the innards

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[Marko_SJ]

I think the idle/slow/pilot circuit on these things seem to be a bit more complex than people give them credit for, and also play up a lot.

Maybe thats why our resident carburation boffin has a weber

Here's a description of how it works



Here's a picture of all the little bits



Remember, the way outta the float bowl is a jet or the accelerator pump, I didn't find a pilot jet sucking fuel straight out of the float bowl on my various explorations in there, as one would find in an motorcycle carb. As you can see via the diagram, the fuel passes initially through the main jet and has various air bleeds do their job, an economiser jet, the slow jet, the fuel cut solenoid and finally the idle mixture screw.....

Ensure every last part of this circuit is clean by disassembling the carb, shooting carby cleaner down and then blowing it out with compressed air.

[Reubs]

bumstein wrote:

Best pic I can find.. This is it off memory, it's been quite a while since I played with the innards

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That is the fuel cut/anti dieseling/idle solenoid - not the idle jet but it will still stop the car idleing if faulty or not wired up.

In MarkoSJ's post above you are looking for no. 3 primary slow jet. It runs vertically and you will see the top of it when the top cover of the carb is removed. You need to remove about a half dozen phillips head screws and the 4 long bolts which bolt through the carby into the manifold. When you lift off the top plate of the carby which has the float and valve connected underneath it you can see the end of the idle jet will be sticking up and you need to unscrew it. The idle jet is not in the float bowl but you will see it there on the engine side of the carby once the top of the carby has been removed. You may need new gaskets if yours hasn't been pulled apart in a while.