Lancia Motor Club Forum Banner
12 August, 2020, 12:54:58 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Need to contact the Forum Administrator? e-mail, for Database Administrator e-mail      -      Copy deadline for Viva Lancia is 12th of each month.      -      For Events e-mail      -      To Join the club go to
   Home   Help Search Calendar Register  
Pages: [1]   Go Down
Author Topic: vaporisation  (Read 122 times)
0 Members and 1 Guest are viewing this topic.
roy parmenter
Posts: 12

« on: 10 August, 2020, 08:18:39 AM »

Had unfortunate breakdown on M25 driving home from north London
yesterday - car going well then just slowed as though it had fuel
starvation - still had half tank of fuel - called RAC - pretty useless -
all these young guys know is how to plug in a computer!! - not there
fault i suppose - ours maybe for driving classics! - however ended up
being put on the back of a truck to home - looked over today & car now
running well so maybe a case of fuel vaporisation. I do have an electric
fuel pump but the line also goes via the mechanical pump to the carb. what to do? wrap the hoses &/or place a made up heat shield between hoses & engine or look to buy a fuel pressure regulator! any assistance greatly appreciated
Posts: 84

« Reply #1 on: 10 August, 2020, 02:39:45 PM »


Don't have an immediate suggestion for you, but just wanted to express my commiserations. Never fun to break down.

1960 Lancia Appia Series 3 Sedan, 1966 Lancia Fulvia coupe, 1980 Suzuki FZ50, Bob Jackson bicycle.
Posts: 379

« Reply #2 on: 10 August, 2020, 02:51:36 PM »

I would check the tank to see if there is no dirt, and also the aireation (is that a word?) as it could be on a short run you get plenty fuel, but if no air can get into the tank you might have fuel starvation.

Always good to have a clear filter somewhere so it is easy to check if there is fuel coming.
Posts: 427

B20 s.2, Appia C10 unrestored

« Reply #3 on: 10 August, 2020, 03:31:16 PM »

Have had similar experience, a few thoughts-
- the Appia has no elec pump, just mech'l. Typically runs fine through heat, although one time years ago suffered vapor lock. I wrapped cloth around the fuel pump, doused with water for evaporative cooling, and that worked.
- Aurelia has struggled in the past, with elec pump running through mech'l. Turns out it was a coil that just gave up in the heat. Once changed, all good. There is a wee bit of vaporization at times, but the elec pump (and a bit of moving) cures it. 


B20 s.2, Appia C10 unrestored
Permanent resident
Posts: 2140

« Reply #4 on: 10 August, 2020, 05:35:58 PM »

I live in a fairly warm part of the world and have no problems with vaporisation with my Appias. However I have recently had a problem with a failing coil on the Fulvia which was worse when it got hot (perfect when cold) so maybe worth a check ??

S1 Aprilia Cabrio, S2 Aprilia, S1 Promiscuo,S2 camioncino, S2 furgoncino, , R4 Sinpar, R4 Rodeo, R60 Tractor,R60 S, Moto Guzzi Ercole, Disco 3, Mini ALL4 JCW, Moto Guzzi Cardellino 73,Fulvia Berlina GT, Fulvia Rallye S, Royal Enfield Himalayan
Posts: 312

« Reply #5 on: Yesterday at 02:20:13 PM »

An electric fuel pump is useful to overcome the problem but it should be running in parallel to the mechanical one, not in series
There has been an unusual epidemic of coil failure in Fulvia in recent times. Coils do suffer from underbonnet heat and vibration. With the current conditions of our roads (and hot weather) perhaps it is not surprising that even a small defect in the primary circuit becomes magnified. Andrea

Andrea Nistri

Ardea S2
Appia S2
Fulvia GTE
Fulvia Sport 1.3 S
Fulvia Montecarlo
Fulvia Coupe 1.3 S
Pages: [1]   Go Up
Jump to:  

Contact the Forum Administrator

LMC Forum copyright © 2007 - 2018 Lancia Motor Club Ltd

Powered by SMF 1.1.20 | SMF © 2006-2011, Simple Machines
Page created in 0.038 seconds with 22 queries.