Club126UK

Fiat 126 Chat => Fiat 126 Mechanical Problem Solving => Topic started by: puck304 on February 08, 2012, 08:43:05 PM

Title: FUEL RETURN PIPE
Post by: puck304 on February 08, 2012, 08:43:05 PM

Hi, recent problem of the brass pipe for the fuel return on the carb keeps popping out, petrol everywhere! Anyone got any ideas? Pipe doesn't screw in, just pushes in & out.  :(

Title: Re: FUEL RETURN PIPE
Post by: dajwid on February 08, 2012, 09:10:44 PM

Bis or aircooled?

If aircooled I can post you a spare carb, you could then raid one for parts.

Title: Re: FUEL RETURN PIPE
Post by: puck304 on February 08, 2012, 09:16:18 PM

Hi, thanks for your offer, it is aircooled. But the carb is only a couple of years old! Do you know if there's any way of sticking the pipe back on? Is it common for the pipe to pop out? I might have an old carb in the garage.

Title: Re: FUEL RETURN PIPE
Post by: Hazey-n-Marc on February 08, 2012, 09:17:12 PM

Some sort of glue should sort it, don't know if there is enough heat at that point in an aircooled for hermatite to work.

Marc

Title: Re: FUEL RETURN PIPE
Post by: Hazey-n-Marc on February 08, 2012, 09:23:00 PM

Solder? Might not work on alloy and might not like the vibration, just a random thought.

Title: Re: FUEL RETURN PIPE
Post by: fightingtorque on February 08, 2012, 09:36:18 PM

I didn't think there was a fuel return pipe on the carb, just a feed.  There is a return on the pump.  This is BIS language of course, air cooled might be different.  

Still doesn't make any difference, if it is falling out you might be able to secure it using one of the Loctite products - similar to threadlock but there are some stronger grades.  

I would then suggest a secondary method of stopping it falling out if the loctite doesn't hold it though.  These brass fittings falling out of carbs was a major reason for Reliant scimitarts catching fire, so what people do is use either locking wire or (in my case) cable ties that go round the pipe and jubilee clip and then stretch round some part of the carb, in order to make sure the whole thing is always being pulled into the carb body.

Gav

Title: Re: FUEL RETURN PIPE
Post by: puck304 on February 08, 2012, 09:41:16 PM

Might try the Loctite, and maybe the cable tie too, thanks for your help! :)

Title: Re: FUEL RETURN PIPE
Post by: DEYAN IYI on February 08, 2012, 09:43:02 PM

You can fit a hose union like this one (even stick it with thread glue) . Also to replace the others if you don't trust them anymore.

(http://espimages.biz/2386/I/179/19/FPA903...JPG)

Title: Re: FUEL RETURN PIPE
Post by: puck304 on February 08, 2012, 09:46:40 PM

Thanks, but I don't think mine has a thread on it. Wouldn't this knacker the hole?

Title: Re: FUEL RETURN PIPE
Post by: DEYAN IYI on February 08, 2012, 10:13:20 PM

 ;D No thread for sure, but you can use a thread cutter ;) And it will last foreverrrrrrr 8)

(http://lh6.ggpht.com/_7zNaTFh82tA/TTVAKOysRYI/AAAAAAAAAYc/w55H0_U7n1c/IMG_0003.JPG)

Title: Re: FUEL RETURN PIPE
Post by: nrg19uk on February 08, 2012, 10:23:45 PM

 :good: deyan

Title: Re: FUEL RETURN PIPE
Post by: puck304 on February 08, 2012, 10:30:00 PM

Sounds good, ta very much! ;D

Title: Re: FUEL RETURN PIPE
Post by: bis13 on February 09, 2012, 09:24:43 PM

i had this happen to me recently and caused me to worry a little as its a sure way to setting light to the car and neighbourhood if not spotted straight away i pushed it home as far as it would go and mixed up a little liquid steel and used that to stick the pipe to the carb.
 

Title: Re: FUEL RETURN PIPE
Post by: skelz on February 10, 2012, 01:46:25 AM

yeah I had this happen to me!  tappped the fitting back in... with no issues !!

Title: Re: FUEL RETURN PIPE
Post by: puck304 on February 10, 2012, 05:53:31 AM

Managed to take a pipe from an old carb, bit too big for current carb, so ground it a bit and wanged it in with a hammer! Job's a good'un! ;)

Title: Re: FUEL RETURN PIPE
Post by: Da Londo on February 10, 2012, 08:15:25 PM

I would have used some liquid steel too.

Title: Re: FUEL RETURN PIPE
Post by: thepuddlejumper on February 11, 2012, 11:35:41 PM

I tapped mine, remember to use a lot of grease to keep the swarf out.  The body is material is soft so go gently. Mine has lasted for 4 years with no problems.

Ralph