Came to my favorite place for advice! Got a mk2 fester with a 1300 cvh fitted with a 1400 twin choke Weber and the fuel consumption is terrible average about 12 MPG! !!!!!!! And that's without booting it! Any ideas anyone?

 

Well you have a carb jetted for one engine randomly stuffed onto another engine, not a good start!

 

did you sort the carb and running problem with the capri you had? same issues iirc

 

Had 3 litre carbs on 2 litre pintos use less fuel so I doubt a extra 100cc Carb on a cvh would b far wrong!

 

U mean the datty engine in the Tina no I haven't can't find the mixture screw and can't find anyone who know about the carbs on it?

 

Well if its not far wrong, why is your car doing 12mpg?

Get a wideband up it but I bet its running richer than a stock broker on a night out.

 

Ps

Put it on aftermarket (cheap option being megasquirt) and get it mapped properly!

Will save you SO much money in the long run, carbs are a load of old fucking shite that have no place in the modern world!

 

I would rather run a Carb all day rather than injection. Lol and the plugs ain't even sooty it run and idle perfect all day its just using bucketful of fuel?

 

I wouldnt, I like the great fuel economy and increases power that I get from running on injection and hence having more accurate fuelling, which improves both power and economy at once.

Take your car to someone with a wideband, you'll soon know then if its the carb to blame for the crap economy or not

 

Poor susbsitute would be bunging an exhaust probe up the pipe and see what it reads.

What weber is it? If its got the vacuum-operated 2nd chooke it could be sticking open?

 

Its only running 0.6 higher than the standard reading. Yeah it is the one with the vacuum secondary but its working fine its even got the people at work at my brothers garage miffed?

 

Economy wont have much to do with what it is doing at idle.

Get a wideband on it and drive it up the road.

 

There's few carbs with vac secondarys fitted to fords, but I'd bet yours is the either the 28/30 TLDM, or the 28/30 DFTM.
As it is running ok, I can't see it actually consuming that much fuel, maybe it is leaking elsewhere, if the vac sec was stuck open it would run like a bag of poo, I would first check if the power valve system diaphragm is perished.
A decent carb set up well is not a no no by any means, some carbs are even fitted to CAT cars, not as accurate as efi, but I'd have a carb over mfi any day of the week.
tabetha

 

To true will b getting a service kit for it this week people have also suggested fuel pump and vacuum leakage around the inlet manifold but surely a leak would cause rough idle as well?