vit wont run on petrol

MUD BUG · Posted: Tue Jun 03, 2008 11:08 am Post subject: vit wont run on petrol

hi i have got LPG on my vit and it runs fine on it but when i switch it to petrol it wont tick over. as soon as i put the clutch it it dies. if i pull the choke out its fine for a bit then it just dies again after 10 miles. it seems like the petrol is dropping back to the tank as when i change over it has to pump though the pipes. any help will good cheers guys

Rossko · Articulating Joined: 23 Jan 2007 Odometer: 757

Carb or injected engine? Mechanical or electric petrol pump? How old is the petrol in the tank? (it goes off!)

cheers, Ross K

MUD BUG · Posted: Wed Jun 04, 2008 12:26 am Post subject:

all new petrol carb engene toke tank out and fixed a leek if that helps

MUD BUG · Posted: Thu Jun 05, 2008 9:15 pm Post subject:

any ideas any one
could it be the needle in the carb

Rossko · Articulating Joined: 23 Jan 2007 Odometer: 757

Dunno, does this carb have needles??

If the tank's been in and out, you may have disturbed crud which could have ended up anywhere - filter, pump, carb. You may disturbed wires to the pump if its back there. You may have crushed or kinked a petrol pipe.

If its not been run on petrol for a long time, only on LPG, then there may be internal carb parts seized (like the needle if it has one) or internal leaks due to gaskets or rubbers drying out and being baked.

good luck !

Nathaniel · Posted: Fri Jun 06, 2008 6:30 am Post subject:

Try a new fuel pump.

Has it got a new fuel filter?

MUD BUG · Posted: Fri Jun 06, 2008 7:07 pm Post subject:

it is kangarooing when the throttle is let off tank was cleaned out left to dry for two weeks so it cant be crap in the tank could it be air mixing with the fuel as it does leak a bit from the fill pipe

Rossko · Articulating Joined: 23 Jan 2007 Odometer: 757

I don't think anyone said it was crap in the tank ; the tank and the attached pipework have been disturbed, crap from before you cleaned it out could have ended up further along the pipe from the tank. I'm sure you would have plugged the pipes to stop bugs crawling up etc. while the tank was out, but there could have been layers of sludge in the pipe that's now flaked off, and so on.

Air leaking in, possibly; in addition to all the other suggestions so far. Has it got a fuel filter? Now's a good time to renew it after cleaning the tank Smile

cheers, Ross K

MUD BUG · Posted: Mon Jun 09, 2008 8:39 am Post subject:

will try new filter is it possible to remove the pipes and clean them out or could this make things worse thanks for ur help

Rossko · Articulating Joined: 23 Jan 2007 Odometer: 757

I don't know, its difficult to be sure what's going on from here!! You seem to be grabbing at each new possibility as 'the answer' without actually investigating - what have you done so far? I would say go ahead and renew the filter for sure, after the tank work Smile

Another suggestion - if the problem comes up only after a while it could be blocked breather causing vacuum in tank.

Can you expand on an earlier comment - "it seems like the petrol is dropping back to the tank as when i change over it has to pump though the pipes" What actually happens there?

umm, is this car new to you, has it ever worked on petrol?

cheers, Ross K