View unanswered posts | View active topics It is currently July 15th, 2025, 4:24 am



Reply to topic  [ 9 posts ] 
 HELP ! 435cc Wont Start. 
Author Message

Joined: March 15th, 2012, 11:25 pm
Posts: 15
Post HELP ! 435cc Wont Start.
Just wondering if anyone can assist me please - ran out of ideas.

I have a late 74 435cc 2cv4 which hasn't ran since 1988.
The engine has been completely rebuilt but was untested until last week, anyway I got it running and it ran for about 20 minutes on the drive on tick over on two seperate occasions.
Then I took it for a spin (less than a mile) put it in the garage it stalled and I haven't been able to re start the engine.

Compression has been tested and is spot on, excellent Spark, I have stripped the carb about four times and refitted - but it just wont start and it seems to me that the carb is flooding as there seems excessive fuel in the manifold which I have dried on several times.

Any suggestions ideas thoughts would be really helpful.

Thanks.


June 5th, 2012, 5:30 pm
Profile
Firing on two.
User avatar

Joined: June 19th, 2010, 8:40 pm
Posts: 761
Location: Kingswood, S.Glos.
Post Re: HELP ! 435cc Wont Start.
Sticking float or needle valve in carb? I know you have stripped it, but worth a double check.

_________________
John Jordan

It is a truth universally acknowledged, that a single man in possession of a good fortune must be in want of a d'olly.


June 5th, 2012, 5:37 pm
Profile

Joined: March 15th, 2012, 11:25 pm
Posts: 15
Post Re: HELP ! 435cc Wont Start.
Thanks.
Ive set the float correctly - not looked at the needle valve. If the jets were to be blasted do you think this would resolve the problem.


June 5th, 2012, 7:36 pm
Profile
Aircooled Idiot
User avatar

Joined: April 24th, 2010, 10:01 am
Posts: 5733
Location: Location Location
Post Re: HELP ! 435cc Wont Start.
Points closed up?

_________________
Image

1988 2cv 652cc
1993 Toyota Hilux Surf 3000cc runs on Bio Diesel
2004 Toyota Landcruiser Amazon 4200cc runs on Bio Diesel
1998 Daihatsu Hijet 1300cc
2005 Susuki Bandit 650cc


June 5th, 2012, 10:55 pm
Profile WWW
Firing on two.
User avatar

Joined: August 19th, 2010, 10:44 pm
Posts: 1815
Location: Cardiff
Post Re: HELP ! 435cc Wont Start.
How old is the fuel? Could be stale?

_________________
[img]http://i1207.photobucket.com/albums/bb480/alastairsmith999/dave411-5.png[/im
g]Horizontally Opposed


June 6th, 2012, 8:27 am
Profile WWW

Joined: March 15th, 2012, 11:25 pm
Posts: 15
Post Re: HELP ! 435cc Wont Start.
Hi Thanks for the suggestions - the points are correctly gapped and the fuel is new - seems to me as though for some reason the manifold is subject to flooding.

Pissed off is not the word - i literally have no idea what is wrong with it.


June 6th, 2012, 7:05 pm
Profile
Aircooled Idiot
User avatar

Joined: April 24th, 2010, 10:01 am
Posts: 5733
Location: Location Location
Post Re: HELP ! 435cc Wont Start.
If its not been used for a whole the float could be stud open

_________________
Image

1988 2cv 652cc
1993 Toyota Hilux Surf 3000cc runs on Bio Diesel
2004 Toyota Landcruiser Amazon 4200cc runs on Bio Diesel
1998 Daihatsu Hijet 1300cc
2005 Susuki Bandit 650cc


June 6th, 2012, 7:07 pm
Profile WWW
Firing on 1-2 Spark
User avatar

Joined: November 8th, 2009, 5:42 pm
Posts: 2847
Location: NL
Post Re: HELP ! 435cc Wont Start.
Disconnect the hose from the tank to the fuelpump, try to make the carburetor dry (get your plugs out and and start for a while) when it runs dry (no petrolfume anymore)
put the plugs in. Get the airfilter out put some fuel on the airfilter get it in quick and start your engine. Now it should run for 5 of 10 seconds. When it doesn.t your timing will be wrong) (You can also put some startergaz into the airfilter that will work too). So when it runs you know it has something to do with your
carburator. Now put the hose back and start for a moment the carburetor get s new fuel and it will start again. Now when it start let it run for a few seconds and shut it off, disconnect the fuelhose again and now let it run again. The carbutator will run dry now and the car stops again. This tells you that your jets are allright (when it won't start/run probably something with your jets is wrong). Put the fuelhose in the pump again and let it run when it starves now I bet your carburator is getting to much fuel. Try to do it sytematic
so that you can write off things till you find the problem

_________________
Russell wrote:
Hi Geo,
you've been one of the sites biggest attractions in recent years.
Russ


June 6th, 2012, 7:34 pm
Profile WWW
Firing on two.

Joined: April 27th, 2012, 6:48 pm
Posts: 709
Post Re: HELP ! 435cc Wont Start.
are u using the old original h/t coil? they are known to play up!! we have 3 2cv,s all have the yellow high output "harley" coils fitted, and electronic ignition. even if you see a spark it doesn,t mean there is a spark once the plug is screwed in and under compression


June 7th, 2012, 9:05 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 9 posts ] 

Who is online

Users browsing this forum: No registered users and 37 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.