CAR STALLING!!! NEW WEBER FITTED.

Finally binned that old piece of pants pierburg,and fitted a brand new weber,all went well as reguards to fitting and also replaced the rubber carb mount with a new one,carb has'nt been set up but ran like a dream for a few weeks until i took it onto the motorway when it started hesitating,problem got worse and worse and now as soon as i go to pull away it stalls,it starts fine and idles fine,replaced rotor arm,cap,ht leads,fuel filter was replaced before weber fitted but is immaculate anyway,just about made it home the other day kangarooing up the road and flooring it just to get it to pull away!!! any ideas? ps: i wish i had kept my ford it never broke down,this thing has cost me ?500 already!!!!

Buy a diesel  :wink:
Bert

You definately got all your airbox/warm air feed fitted?  Apparently Webers can ice a lot worse than original carbs, although Pierburgs are useless.

Or maybe dirty (large) jets? :dontknow:

Or maybe knackered vacuum pipe to the v.advance?

The only thing i have'nt done is use the fuel filter supplied with the weber,it is bigger than the one used with the pierburg,but does this make any difference? whether it's the size of a matchbox or the size of a football surely it's only a filter? have'nt try'd fuel pump mine is mechanical located in engine bay,could this cause these problems?.

Replace the filter as the original maybe old and not doing a good job whereas a new one would do, plus the size does not matter at all bud, the old filter maybe holding loads of dirt which is being dragged throught the fuel lines to the carb of which as now been passed onto the jets on the weber and possibly blocked them.
You will see 2 screw type things, these are the jets in the centre of the weber carb as you look at it from above once you remove the air filter box, get a flat head screw driver and unscrew them, do one first then refit and do the next, simply spray some carb cleaner on the jets or blow down them, there are tiny tiny holes that might be blocked, refit and give it a go.
Just a thought, if new fine, just do the above and makes sure you set the idle at 900rpm once engine is at operation temparture.
The above could be one thing, but if you do it and you have further problems, i'd look at the fuel pump also,
 from what you say timing maybe out slighty, also if i remember correctly on the mk2 when i fitted the weber i had to modifiy the vacuum pipes also.
what i will do is i will go round to the garage now and get pics of vacuum pipes locations and post the pics up bud, i'm certain you might have them in wrong places, this would give you problems you are stating.
Hang fire, should have them posted about 11.15pm
Best wishes and i hope all goes well :wink:

Here you go, i hope this helps, let me remind you that these pics are from my mk2 and could differ slighty to the mk1, unless you have the same 1.6 block bud
You need to buy 2 t-piece vaccum pipe adaptors to fit all pipes, cost you approx ?1 in all




Really hope this helps you bud :wink:

have had the same problem. unscrew all four jets out from the top. Stuff an air line in the holes and gave it a good blow. Cleaned the jets. and walla! all sorted. Dont mix them up when re-fitting tho!

Give it a try.

Make sure if you clean the jets that you screw them back in to exactly the same number of turns as when you took them out, otherwise the holes will not line up and you'll get no fuel supply!

put a bit of cloth over the carb though if u blow it out, sum carbs have a spring n ball bearing in there, on really old carbs, but if u loe these it will never run right again, also it stops fuel shooting into ur eye  im telling u this because i had to learn the hard way and god it burns if u get fuel in ur eye,

simon

Are there 2 or 4 jets on the weber,i have removed the centre 2 and they had tiny holes in them,cleaned with brake cleaner,they have a code on top like 755 or something,there are another 2 screws on the outside of the first 2,i have'nt removed these.I have'nt started car yet as i have removed fuel pump and awaiting replacement,also petrol pipes come out of fuel pump and go into a cylinder pot thing which looks like it has a fuel return coming out of it,what is this part? could this be faulty?cheers.

Have just received fuel pump and replaced it,have also cleaned out jets,and put a new fuel filter on,took out for drive it's still the same   did notice when engine switched off fuel filter is about half full roughly maybe under,but when engine is started fuel disappears from filter!!! also what is this part and could this cause the problems i have been having.

http://i79.photobucket.com/albums/j152/mintmaster/part1.jpg

Sounds like you have the good old mk1 problem of rust in your fuel lines from a rotten fuel filler neck, rather than any problems at your carb end.

Just try undoing the fuel line to the fuel filter and give it a blow job (ooo-errr!!!). Just blow back on the line that goes back to the fuel tank and see if it unblocks, then take it for a run out to see if that has solved it.

If it does, you may need to clean your tank out and maybe fit a new filler neck if it has not already been done.

Mine still gave symtons like yours long after the filler neck had been changed, just until all the crap came out of the tank.

Hope that helps!

Cheers

HI MATE
I`M WITH JBA ON THIS ONE ASWELL, MINE WAS DOING NEARLY EXACTLY WHAT YOURS WAS, AND I SO NEARLY BOUGHT A WEBBER, UNTIL SOME1 ON HERE SUGGESTED LOOKING AT FILLER NECK. I COULD NOT BELIEVE HOW ROTTEN IT ACTUALLY WAS HAVE A LOOK

 

ANYWAY REPLACED THIS AND GAVE THE CARB A RIGHT GOOD CLEAN OUT AND HAS RUN FINE EVER SINCE.
GOTTA BE WORTH A LOOK EVEN IF IT TURNS OUT TO BE SOME THING ELSE, ITS NOT ALOT OF WORK TAKING FILLER NECK OFF,
HOPE THIS HELPS

THANKS KENNO

These guys could be right about your fillerneck so grab a torch and have a scan,

But, fuel filter being half full is normal, and fuel disappearing from it on startup is also normal.

That part in the pic you show the link to, is a fuel pressure regulator. These have an internal filter in a 'bowl' (just the shape of the outer casing). Maybe you can see if you can take it apart and check the condition of this filter, as this could be preventing flow :wink:

I think the webers have these as they dont have a fuel return pipe on them already.

Try changing your in line filter first whether it looks dirty or not, and remember to fit it the right way round :wink:  As these can become very blocked (not always obviously), not necessarily by rust or dirt, but just from being old and the pump just cant pull the fuel through.  

If your fillerneck has caused your tank to be full of rust, you will be able to tell by the amount of crap in this filter!