Lotus Elan

help! lightpods stopped lifting

PostPost by: Pistacchio sprint 72 » Sun Aug 16, 2015 9:33 am

Hello. I have an issue with my lightpods.

They used to work fine before.

Yesterday we were going up in the mountain when the rain poured on us and fog also. I lift the lights up but my friend missed the movement and wanted to see them in action. So i put them down and up again... they never lift the second time.

I checked the T and hosing quickly but i did not see anythin disconected.

Any clue or advice to track down the origin of the breakdown?

Thanks
Last edited by Pistacchio sprint 72 on Sun Aug 16, 2015 9:52 am, edited 1 time in total.
Cooled down by CliveyBoy!
User avatar
Pistacchio sprint 72
Fourth Gear
Fourth Gear
 
Posts: 776
Joined: 12 Sep 2012
Location: French Riviera...

PostPost by: Pistacchio sprint 72 » Sun Aug 16, 2015 9:36 am

It was annoying without lights..
Attachments
20150815_160206.jpg and
Cooled down by CliveyBoy!
User avatar
Pistacchio sprint 72
Fourth Gear
Fourth Gear
 
Posts: 776
Joined: 12 Sep 2012
Location: French Riviera...

PostPost by: terryp » Sun Aug 16, 2015 10:05 am

Cedric
Are they fail safe or non fail safe? I.e when the car is left are they up or down?
Terry
terryp
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1665
Joined: 29 Nov 2007

PostPost by: Pistacchio sprint 72 » Sun Aug 16, 2015 10:27 am

They are in their normsl down position
Cooled down by CliveyBoy!
User avatar
Pistacchio sprint 72
Fourth Gear
Fourth Gear
 
Posts: 776
Joined: 12 Sep 2012
Location: French Riviera...

PostPost by: terryp » Sun Aug 16, 2015 11:12 am

Cedric, then it's either a vacuum leak or the vacuum pods aren't working.
There are joins to the switch on the dash, the t piece, onto to inlet manifold via a non return valve and onto the pod itself. Has the tick over got more irratic? Can you hear any hissing?
Terry
terryp
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1665
Joined: 29 Nov 2007

PostPost by: elanfan1 » Sun Aug 16, 2015 12:00 pm

Think Terry has summed it up nicely, there can't be many places for such a catastrophic loss of vacuum to occur. Sounds like they were working one second and not the next. Something must have come adrift or a vacuum pipe has split - if it was a gradual leak from say a connector the pods would be trying to pop up and failing but it sounds like they don't move at all.
Steve

Silence is Guildern; Duct Tape is Silver
User avatar
elanfan1
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2093
Joined: 13 Jan 2004
Location: Cardiff in Welsh Wales

PostPost by: Pistacchio sprint 72 » Sun Aug 16, 2015 12:28 pm

Joints to the switch on the dash... might be it.
I don t hear no hissing sound with the noise of the TTR fast road exhaust but the button is sliding differently when actuated
Cooled down by CliveyBoy!
User avatar
Pistacchio sprint 72
Fourth Gear
Fourth Gear
 
Posts: 776
Joined: 12 Sep 2012
Location: French Riviera...

PostPost by: Pistacchio sprint 72 » Sun Aug 16, 2015 12:37 pm

How do i pull that button appart? Any pics?
Cooled down by CliveyBoy!
User avatar
Pistacchio sprint 72
Fourth Gear
Fourth Gear
 
Posts: 776
Joined: 12 Sep 2012
Location: French Riviera...

PostPost by: terryp » Sun Aug 16, 2015 1:05 pm

Cedric
If you need your lights I would pull of the pipes at the back of the switch and join them together with one of the short sections of rubber pipe. See it that works, and at least you have them in the up position!

Terry
Ps looks nice scenery where you are, at least your windscreen wipers haven't stopped working :wink:
terryp
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1665
Joined: 29 Nov 2007

PostPost by: jimj » Sun Aug 16, 2015 3:02 pm

Cedric, to locate my problem I did just that. I pulled the 2 pipes off the switch and joined them. The pods stayed up so I knew the switch was the problem. Details here; lotus-chassis-f36/vacuum-pods-t34444.html
Jim
jimj
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1135
Joined: 25 Feb 2008

PostPost by: terryp » Sun Aug 16, 2015 3:07 pm

Cedric
I have just had a thought , If it works - fine , but do not have them unconnected in the car as that would be bad!
Just reconnect switch to lower.

Terry
terryp
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1665
Joined: 29 Nov 2007

PostPost by: Pastapesto » Sun Aug 16, 2015 5:03 pm

I once had a problem whereby the pipe that comes from the inlet manifold was pushed into the "T" piece too far, thus blanking off the connection to the front chassis member/vacuum tank. This meant that there was no storage reservoir for the vacuum. They went up once (a little slower than normal) but would not raise a second time without taking many minutes with the engine running. It took a little working out what was wrong because from first appearances everything looked fine - pipes connected & tight joints. Once I had the connection put right, they worked perfectly as per normal.

I might not be what is your problem but it was what was wrong with mine!

Good luck with sorting it.

A
Pastapesto
Third Gear
Third Gear
 
Posts: 277
Joined: 12 Nov 2006
Location: Tunbridge Wells, Kent. UK

PostPost by: elansprint71 » Sun Aug 16, 2015 6:48 pm

'72 Sprint should have "fail-safe" headlamps i.e. they are sprung into the up position. There should be only one vacuum pod unit. If there is a leak, the lights should be up.

My '72 Sprint had had a front end rebuild at some point and had two vac-pod units, is this the case with yours?

I put the vac units in a bin and fitted modern electric actuators.
elansprint71
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 4092
Joined: 16 Sep 2003
Location: Cheshire, UK.

PostPost by: john.p.clegg » Mon Aug 17, 2015 5:40 am

"going up in the mountain " could be a clue,were you at large throttle opening...then you didn't have a high vaccuum....I don't know how much ( or little :? ) vaccuum is stored in the crossmember but surely enough for two operations...

John :wink:
User avatar
john.p.clegg
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 5690
Joined: 21 Sep 2003
Location: Manchester

PostPost by: alan.barker » Tue Aug 18, 2015 8:02 pm

[quote="elansprint71"]'72 Sprint should have "fail-safe" headlamps i.e. they are sprung into the up position.
I have a 1972 Elan Sprint fhc and it has 2 vacuum pods non fail safe. Original setup never been changed. I understand fail safe 1 vacuum pod was for lhd on Elan sprints
Alan
Alan.b Brittany 1972 elan sprint fhc Lagoon Blue 0460E
alan.barker
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2348
Joined: 06 Dec 2008
Location: BRITTANY FRANCE
Next

Total Online:

Users browsing this forum: lotusfan and 14 guests