View Full Version : Weber 32/34 overfuelling
Fitted this the other day and started it tonight and its overfuelling like crazy?!
I can see petrol in one of the holes where the butterflys are and 1 is filling up the other normal.When i take the fuel line off it spurts across the garage.Have i connected up something wrong? Is there a fuel adjustment anywhere? Also this is causing it to misfire like fukk aswell.Please help!!!
euro-rat
02-09-08, 09:50 PM
what jets are in it?
Dan
It came bolted to a 1300 manifold so i presume its jetted for what ive got.
hendrix
03-09-08, 09:30 AM
ermmmm if its my old one its off a 1.4SR lump that was bored to 1500cc+ running a piper cam
Tis indeed err hendrix, (thats wierd im used to calling you andy but will get rather confuddling if i do) is this a swap the jets job then or is there a way he can turn the fuel down?
hendrix
03-09-08, 10:59 AM
I'd say it needs re-jetting. The 1.5 was running around 106bhp
Where would still do jets suitable for a 1.3 these days i really cant think off top of my head lol
hendrix
03-09-08, 11:39 AM
The guy at Barnetby top did Al's race car. Can't remember their name though.
Straight down a15 for you. He'll set it up on the rollers too.
Not sure on prices though
boggys would get it running fine for ya, they put correct sizejets in and rolling road tune it.
Yeah nbut the car is off the road for winter but if we/andy can source jets and get fitted then its one less thing to do when she is back otr!
stil would have to have it set/tune up on rolling road. have a browse on ebay for jets sure could find some
*Edit* Heres a shop on ebay that does jets, just gotta figure out what size you need http://stores.ebay.co.uk/FAST-ROAD-CARS_Weber-Chokes-Jets_W0QQcolZ2QQdirZ1QQfsubZ5QQftidZ1QQtZkm
Cheers sam i shall pass all info onto andy now cos he prob not up yet so ill txt him lol
craig green
03-09-08, 12:00 PM
Is the return line plumbed in with a T-piece to the feed line?
Err possibly not as he was having a look at haggers SR prior to fitting and his is jus blanked off on the return line!
craig green
03-09-08, 12:03 PM
The return should be T'd into the feed line before the carb.
Common error with Weber 32/34's.
aye mines not t peiced, and runs sweet as a nut
Oh right cos mikey14SR set haggers up iirc and he said just to block it off so im guessing andy has done the same too!
saying that, im sure mikey said sometines ya t-piece it or sometimes you dont. maybe if he trys and t-peices it will down the pressure, causing it not to overfuel....
mikey14sr
03-09-08, 02:28 PM
Mine was t-pieced at first, untill I took it all apart and broke the t-piece when building up the 1400 engine, that's when I fitted the blanking bolt. I got a pressure regulator and turned it down just in-case, but when Boggy checked the pressure properly it was bang-on without the reg. I never had a problem with the carb flooding at all.
I've long since thrown away the bit of paper I jotted my final jet sizes on, but I seem to remember the idle jets being 55/60, and mains 155/185, but bear in mind that was a 1400 with a 285 camshaft.
Does anybody know the jet sizes i need for a 1300?
Wheres that martin mate?
Boggs should know aswell shouldnt they? thats only 20mins from me
PM me I have a new 32\34 in the garage jetted for 1300. We may be able to set a swap up.
No thanks.Only want the sizes
i can look on the box i got mine in, it may state the sizes it came with on there as it was the kit for a 1.3sr
Its that one hendrix said, barnetby top, hes a top bloke, sets duratec kit cars up on webbers, does alot of carb work has his own 2wd rolling road set up
Cheers hagger id appreciate that mate
Ah ill bear him in mind Martin,thanks bud
its were my small cock(whooops block) will be going to get set up after its been cammed
ok bud got the sizes, as follows:
Main Jet: Primary: 117 Secondary: 125
Air Corrector: Primary and Secondary:165
E Tube: Primary: F30 Secondary: F25
Idle Jet: Primary: 55 Secondary: 60
Pump Jet: 45
Needle Valve: 175
also got the full fitting instructions too.
Hope this helps mate
Cheers mate +rep added:thumb:
Is this a set you bought? If so where from and how muck?
Also that sounds rather alot lol where the hell are they all? i thought they was only them 4 in the middle of it lol (the gold screws)
Also dont mean to be cheeky but is there any chance you could photocopy the instructions and give them to spud please.
no i got the full carb kit to bolt straight to a 1300, so came like all ready, got for 60quid, brand new never opened hehe! im guessing you will probs only need to change the main jets. got all the part numbers for each of what i have listed anyways, if ya ever wanna borrow the instructions and the list for the sizes ya can do bud
Nice one mate thanks for that,yeah if ya could give them to spud for me or ill paypal you some money for an envelope and stamp and you could send them to me?
tell ya what can do bud, pm me ya email address and ill scan the instructions and that in and just send them to ya
Thanks mate,much appreciated.
mikey14sr
04-09-08, 10:04 AM
ok bud got the sizes, as follows:
Main Jet: Primary: 117 Secondary: 125
Air Corrector: Primary and Secondary:165
E Tube: Primary: F30 Secondary: F25
Idle Jet: Primary: 55 Secondary: 60
Pump Jet: 45
Needle Valve: 175
also got the full fitting instructions too.
Hope this helps mate
That's in-line with what mine were before boggy had a play with it, the only things we changed were the idle and main jet sizes iirc. My secondary main jet though was marked as a 155, but when we checked with a set of jet drills we couldn't even get a 130 to fit in it, Boggy did mention that he'd had an ever increasing amount weber jets being under-size over the past 10 years, and was now at the point where if he was buying new ones, he'd always buy the smallest he could get and drill them out his-self to the right size.
Jus to go back to andys other problem of a dodgy misfire around 4k what do peeps think of these two pics, first the coil doesnt look too clever so im thinking this might be affecting spark if its nobbed, and can anyone see anything untoward in the engine bay on the second one?
Cheers for any help and advice offered guys and gals :thumb:
http://i8.photobucket.com/albums/a36/spudly01/Random%20stuff/DSC01969.jpg
http://i8.photobucket.com/albums/a36/spudly01/Random%20stuff/DSC01970.jpg
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