DYING OUT - ALMOST SORTED IT NOW !!!!!!!!

[72mk1escort]

Hi

 

I have been very busy over the last 2 days fitting my new fuel pump and 32DGV Twin Choke Weber Carburetter (which i had already re kitted).

 

When i finished fitting everything on yesterday i tried to start the car up and it did not go so i put it on charge over night and then tried it again today and it didn't go so i reconnected the battery charger whilst i took the top off of the carb and blew each jet and the hole each of them came from through with the blow jet connected to my compressor.

 

I then tried it and it started almost straight away so i set the air/fuel mixture screw and idle speed and it sounded lovely.

 

However when you try to rev it it will only get to 3000 rpm and then die out when you look down the carb the throttle pump jet that you can see putting out fuel stops putting fuel out at exactly the same time as it dies

 

My Dad who's a mechanic learnt his stuff on oldskool fords has looked over it and so have i and neither of us can work out what is wrong

 

Maybe someone on here is more knowledgeable than me and my Dad are on weber carbs and can possibly point me in the right direction to sort the problem out.

 

If anyone can help me out i would really appreciate it as i will need the car up and running by Tuesday (25th) and i dont want to have to resort to putting the old carb back on

 

 

Any help will be really appreciated

 

Thanks Guys

 

[Twinkle]

what pump did you fit m8?

[72mk1escort]

what pump did you fit m8?

 

I fitted a fuel pump which was fitted to 1300GT MK1 Escorts and also MK2 1600E Cortinas. Its one of the early types with the glass bowl on top it delivers the fuel at a higher pressure/rate to my standard one so i fitted it in conjunction with the Weber

 

It delivers the fuel at 0.25-0.35.

 

Not sure if thats the problem as my dad checked the fuel delivery and it was okay

[Supercharged Nat]

the fuel you can see squirting into the carb throats is the accelerator pump jet.

 

if the engine cuts out when this stops delivering fuel then it suggests your idle and main circuits are not working as they should. the pump jet only works on acceleration, when you press the go go pedal. the idle circuit should allow the engine to run from idle speed up to 3000rpm and then after that the main circuit takes over. so to me the only reason your engine is running at is is due to the fuel being squirted in by the pump jet.

 

i would remove the top of the carb and recheck all the jets- and make sure they go back in the correct positions. (the dgav carb needs its jets in the correct positions as each barrel of the carb is jetted differently).

 

is the secondary throttle plate closing fully?

did you remove all the jets during the rebuild?- did you make sure they all went back in the proper places?

[bullittcraig]

Check the filter under the big brass nut on the carb(fuel inlet) and check that the carb diaphram pump isn`t punctured. Have you checked the float inside the carb as well?

[ocean wasp]

I ain't a carb expert but, someone correct me if I'm wrong, I think the jet that you can see down the carb venturi is the acceleration jet. This is meant to squirt petrol down the carb when you pump the throttle not all the time.

As you've just fitted the carb after rebuild I'd be tempted to go over all the carb and manifold bolts etc and check they're tight. Sounds like you could be drawing air in somewhere. If the engine will idle try spraying wd40 around the carb/manifold gaskets and see if the engine note changes. Does the manifold have a servo take-off? Is it used or blocked? Crankcase breather connected up ok?

I'll eat my shorts if that fuel pumps faulty

 

Edit... god I type too slow

[72mk1escort]

In Answer to a few questions:

 

Yes i have checked the float chamber and its all fine

 

The fuel delivery is excellent.

 

The breather pipe is connected to the crankcase breather and the end which goes to the servo which i dont have has been blanked off so no problems there.

 

I am pretty sure that all of the jets went back in the correct order but i am wondering about that myself

 

Has anyone got an exploded view of the Weber 32 DGV Twin Choke Weber that shows what jets go where?

 

Thanks for all of the help so far guys

[radar tech]

i was having a similar problem with my dgv . been bangin my head against the wall and started pissing about with the float levels and found that mine was wrong. i set it to the haynes manual levels and it cured the fault but it was running rich as hell and eventually died due to sooty plugs . (even after leaning off the mixture !!)

 

I also have an origional ford tech manual for the mk2 escy dgv and the float levels are different compared to the haynes manual. Only set it today and ran out of time to fire her up to test will keep you posted

[Supercharged Nat]

sorry just to clear up a few things- what engine and what size is it fitted to now? what engine did the dgav come off?

 

you may need to confirm what jets are fitted to where in your dgav, but if you caould answer the questions above first itl help...

[72mk1escort]

Hi

 

The carb is a Twin Choke Weber 32 DGV and it was removed from a 1300GT MK1 Escort.

 

My car is an 1100L MK1 Escort.

 

[72mk1escort]

BUMP!

[Supercharged Nat]

ok then the jetting shouldnt be too far out. i would double check your jetting (making sure the main jets are in the correct positions etc) and also go back to base line settings with the carb

[radar tech]

any update on how the fault progressing????

 

[72mk1escort]

Right got it all running now after totally dismantling the carb in the garage and cleaning every last jet etc and blowing the whole carb housing through with a blow jet on the compressor.

 

Everything is fine except now i have a totally different fault which is when on the motorway in 4th or 3rd gear and trying to accelerate it wont go above 4000RPM without dieing and coming back it makes the car jugger backwards and forwards

 

The only thing i am suspecting for this fault is the fuel pump as the arm on the new pump was abit different to my old one and someone said that could cause the fault????

 

Anyone know what it could be?

 

[BIG G]

Sounds like as you have recently swapped the pump then thats the obvious thing to do is either put the old one back on or another new standard one. if no joy try resetting the float level in the carb. good luck

[72mk1escort]

Thanks mate

 

All i can say is around town its absolutely fine so its deffinitly a wierd one

[Jimbob-Squarepants ©]

Re-check your float levels mate

[Supercharged Nat]

do whats already been said but if still no joy, then you need to be looking at your main jets- on the progressive carb the 2 main jets are different sizes, you may have them swapped around?

 

when it wont go above 4000 is that with you feeding the throttle in or foot to the metal?

[Fiesta Steve]

Sounds like loss of fuel pressure to me.

[jayson2.3pinto]

i would check that you have good fuel supply to the carb m8 put a inline

gauge to see if it dies of when foot is flat to the floor for a while , i would say its running out off fuel

[atomic punk]

Had similar problems with my twin choke, as soon as you floored it on the motorway, it would fall flat - but strangely, it worked perfectly with the choke pulled out which leads me to think there was an air leak. You might want to see if yours does the same?

 

I never did get to the bottom of it -I ended up buying a brand new carb which solved the problem a treat....

[72mk1escort]

when it wont go above 4000 is that with you feeding the throttle in or foot to the metal?

 

Both mate no mater what i do it still bogs out at 4000RPM

[Supercharged Nat]

ok then i think the fuel pump issue should be checked out before any thing else.

 

after that the jets and float height will need checking but fuel pump first.

[72mk1escort]

The fuel pump was taken off of a 1600GT Crossflow Engine so could it be that the camshaft is not pushing the rod enough for the pump to work properly?

[72mk1escort]

BUMP!