Hello,

Having a bad carb week. So i got the engine running a week or so ago, and it was a tad rough, didnt bother much about it, then last week I attempted to sort it out, something i immediatly noticed is that when i switch it off, there pools of fuel accumulate on top of the butterfly.

I removed the carb, cleaned it out (Its a standard ford motorcraft carb on a 1300 xflow) and tried again, it ran a bit sweeter, but once it stopped i had the same problem and itwouldnt start again, it was running way too rich too.

So i tried another carb, twin dgav worked ok, but i have the same problem - way too much fuel. I'm still using the standard mechanical fuel pump.

Any ideas whats going wrong? Its doing my head in - i even stuck on twin webers, didnt have this problem but its jetted for a much bigger engine so totally useless on the 1.3

Thanks in advance


David

You could check / adjust the float level

You could check the fuel needle/ seat condition

You measure the pressure from your pump

You could fit a Malpassi Filter King fuel regulator and adjust 'til the carb no longer floods

On a normal bread and butter road car I would say the float valve is sticking or worn but because it is a Locost and you have tried two different carbs it is more likely to be -------

Fuel pump - check the mechanical pump hasn't been refitted without the spacer gasket.


[Edited on 22/4/05 by britishtrident]

as britishtrident said, plus just worth a check of float level, given the different engine angle in the locost. Shouldn't make that much difference but worth a check.

How thick is the spacer? theres a spacer of some description there, but MikeR recons it looks a tad small - It looks about 5mm.

I'm going to check the float level today as it may well be miles out.

TIA


David

As i said to IrvineD the spacer looks a little small. When i had my flooding problem i forgot to fit the spacer full stop - the poor carb couldn't stop the fuel it was pumping that much. I guessed the spacer was about 10mm.

Someone remind me to have a look the next time i'm in the garage.

Oh, and look after my DGAV!

So I finally got around to having a proper look at this, removed the float, checked it floated (it did.) checked the clearences, they were all ok, pondered, couldnt think of anything, then put it all back on the car, and tried again, same problem.

What I did noticed, which I didnt before, was a strange gurgling - a bit like the noise fuel would make if it was boiling in the fuel line, So I think whats happening, is that the fuel is getting hot somewhere along the way, I suspect it is when it passes around the manifold, I have the line going between two ports, then into the carb. I havent had time to re-route it as it needs a longer bit of hose. This would certainly explain why i have the same problem on all the carbs I've tried.

I turned off the fuel tap and the fuel was bubbling out of the jets, which totally baffled me at first.

I'l let you know how i get on with that, im just a little surprised since I've never heard of this happening before, then again, I'm no locost expert.

On the plus, I rotated my rad around 180 degrees so that the pipes go into the offside, and now its a lot more simple - need to install the shiny new loom before I can test if it keeps within sensible temperatures, but things are looking up, perhaps my car was just depressed, and the good weather has put her in a better mood.

Thanks for all the help

D

P.S Premier Wiring loom is unravled on the floor in a rough car shape, it looks scary, but a very nice, well put together loom, I'd definately recommend it, very helpful bloke too.