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Fulvia 1.3 firing badly
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Topic: Fulvia 1.3 firing badly (Read 1542 times)
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HF_Dave
Megaposter
Posts: 485
Rust , What Rust !! I don't See any rust !!!
Fulvia 1.3 firing badly
«
on:
08 May, 2019, 08:41:37 AM »
My Fulvia has developed a miss fire below 2000 rpm , it seems to run rough until it gets over 2000rpm , I've checked the leads ,they seem to be ok , I replaced them 3 years ago , would it be a plug fouling of a carb problem ?
Thanks David
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My Current Cars:
1991 Thema station wagon
1989 Thema 16v
2011 Lancia Delta 3
1977 Beta sedan 2000
1975 Fulvia S3 1.3
1973 Flavia HF 2000 Coupe
1972 Fulvia S2 1.3
1989 Thema 8.32
**Other Makes**
2018 Alfa Giulia
1999 Alfa 156
2009 Fiat Du
Richard Fridd
Permanent resident
Posts: 2952
Re: Fulvia 1.3 firing badly
«
Reply #1 on:
08 May, 2019, 09:09:40 AM »
Could it be to do with the idle jets?
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Richard Nevison Fridd
lancialulu
Press Officer
Permanent resident
Posts: 4098
Re: Fulvia 1.3 firing badly
«
Reply #2 on:
08 May, 2019, 11:21:43 AM »
Hello Dave
Could be a few things but worth changing the plugs to Iridium type first.
Tim
Logged
Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
HF_Dave
Megaposter
Posts: 485
Rust , What Rust !! I don't See any rust !!!
Re: Fulvia 1.3 firing badly
«
Reply #3 on:
09 May, 2019, 06:29:50 AM »
I presume the idle jets if they are blocked would cause the misfire ? It runs like a tractor up to 2000 rpm . Can the jets be blown ou the with air ?
I'll check as the the plugs first. The weather was bad yesterday evening and I didn't get a chance to look at it . Thanks for the advice.
Logged
My Current Cars:
1991 Thema station wagon
1989 Thema 16v
2011 Lancia Delta 3
1977 Beta sedan 2000
1975 Fulvia S3 1.3
1973 Flavia HF 2000 Coupe
1972 Fulvia S2 1.3
1989 Thema 8.32
**Other Makes**
2018 Alfa Giulia
1999 Alfa 156
2009 Fiat Du
lancialulu
Press Officer
Permanent resident
Posts: 4098
Re: Fulvia 1.3 firing badly
«
Reply #4 on:
09 May, 2019, 07:35:39 AM »
The idle/slow running jets and also the main emulsion tubes (2 of each per carb) are accessible from the top of the carb. Best take the whole top off so you can see if you have a lot of crap in the float chamber. If it looks like you have best to take the carbs off and strip them and blow everything through with an air line......
Logged
Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Richard Fridd
Permanent resident
Posts: 2952
Re: Fulvia 1.3 firing badly
«
Reply #5 on:
09 May, 2019, 07:58:03 AM »
I have used carburettor cleaning solvent for the jets, to clear them of petrol deposits. A small ultrasonic cleaning tank is also useful. To find out which cylinders are not firing properly perhaps remove one HT lead at a time and see if the idle speed alters. Or wind the idle speed screws in and out to see what effect those have (mark original position first). If any of these things have no effect, that could be where a problem lies. A temperature meter could be used on the exhaust manifold branches (cooler=not working so well) Better weather now I hope.
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Richard Nevison Fridd
simonandjuliet
Permanent resident
Posts: 2273
Re: Fulvia 1.3 firing badly
«
Reply #6 on:
09 May, 2019, 08:25:21 AM »
Another thing to check are the screws holding the venturis. You can check by removing the air filter box and trumpets and then see if you can wiggle the venturies with your finger - if you can move them then tighten the screw and lock nuts on the side of each choke tibe
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S1 Aprilia Cabrio, S2 Aprilia, S2 camioncino, S2 furgoncino, , R4 Sinpar, R4 Rodeo, R60 Tractor,R60 S, Moto Guzzi Ercole, Disco 3, Mini ALL4 JCW, Moto Guzzi Cardellino 63,Fulvia Berlina GT, 2019 Royal Enfield Himalayan
lancialulu
Press Officer
Permanent resident
Posts: 4098
Re: Fulvia 1.3 firing badly
«
Reply #7 on:
09 May, 2019, 09:34:59 AM »
I tried this Wurth stuff on a car that had been standing some while that would not run cleanly low down. Cured it.
This snake oil can do 3 Fulvias....
https://www.ebay.co.uk/itm/273808923875?ul_noapp=true
Logged
Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
HF_Dave
Megaposter
Posts: 485
Rust , What Rust !! I don't See any rust !!!
Re: Fulvia 1.3 firing badly
«
Reply #8 on:
11 May, 2019, 06:08:28 PM »
I got the chance to have a go at the Fulvia today and it's sorted . I took out the idler jets and there was a bit of black gunk on them I gave them a clean , one at a time . I sprayed some carb cleaner in the hole and blew compressed air through them . screwed them back to their original place ,This cured the problem . Thanks for the advice
Logged
My Current Cars:
1991 Thema station wagon
1989 Thema 16v
2011 Lancia Delta 3
1977 Beta sedan 2000
1975 Fulvia S3 1.3
1973 Flavia HF 2000 Coupe
1972 Fulvia S2 1.3
1989 Thema 8.32
**Other Makes**
2018 Alfa Giulia
1999 Alfa 156
2009 Fiat Du
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