UKSaabs

THE site for UK Saab people!
It is currently Mon Dec 11, 2017 10:55 pm

All times are UTC



Forum rules


IMPORTANT INFORMATION FOR NEW TOPIC TITLES
For Workshop questions, please include year, model and a brief description of the issue in the thread title (in order to assist others to assist you),



Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Thu May 06, 2010 7:32 am 
Offline
Active user
User avatar

Joined: Fri Jan 08, 2010 11:02 am
Posts: 61
Recently developed a smell of petrol inside the car, over time I thought it was more apparent in the boot, so I took the inspection cap off the top of the fuel pump. It's the roller type with a large rubber 'cup' around the top of the pump and the outlet check valve sticking up in the middle.

The rubber cup is about half full of exposed petrol – so definitely where the smell was coming from!

Can anyone tell me what going wrong here, how does the check valve work, is it faulty – how is the petrol getting out of the pump/valve, what do I need to fix?

Other unconfirmed but possibly related issues with the car – loss of acceleration power though top end is fine, and a tendency for the engine to cut out at odd moments such as when shifting from 4th to 5th at 70mph.

Any wisdom appreciated.


Top
 Profile  
 
PostPosted: Thu May 06, 2010 8:45 am 
if i remember correctly then there is a union on top of the pup which attaches to the fuel pipe under there is a seal and a copper washer try replacing them and go from there


Top
  
 
PostPosted: Thu May 06, 2010 12:08 pm 
Offline
UKS Addict

Joined: Sat Jun 10, 2006 1:47 pm
Posts: 6199
Location: Luton
Car Model: Saab C900
smell is most likely coming from behind the petrol cap ... broken breather underneath .. common enough issue

Assuming your current investigation does not lead to a result

Steve


Top
 Profile  
 
PostPosted: Thu May 06, 2010 12:10 pm 
I had that same problem well pointed out steve :geek:


Top
  
 
PostPosted: Thu May 06, 2010 12:22 pm 
Offline
Active user
User avatar

Joined: Fri Jan 08, 2010 11:02 am
Posts: 61
Thanks, yes I checked the breather pipes first, no problems there. The smell is definitely coming from the petrol sloshing about on top of the pump itself. I'm wondering if a blocked fuel filter might cause this?


Top
 Profile  
 
PostPosted: Thu May 06, 2010 12:39 pm 
I Wouldn't have thought so if there was that much pressure build up then the fuel lines would split i would check that union on the top of the pump because as you said it has performance issues and to me it sounds like its dragging in air :evil:


Top
  
 
PostPosted: Thu May 06, 2010 8:46 pm 
Offline
UKS Addict
User avatar

Joined: Fri Feb 01, 2008 12:59 pm
Posts: 6826
Location: NW of the M25
Car Model: c900 T16 - For Sale
I had some fuel - nowhere near that much - in the lid over the pump.

Pulled the feed & return pipes, replaced the O-rings, and the smell was gone. Economy improved, too...

(In my case, I think it was the return - the smell was worst on the over-run after a decent boosty thrape)

_________________
Adrian
Back from living life on the road in an old VW
http://WhereverTheRoadGoes.com


Top
 Profile  
 
PostPosted: Tue May 11, 2010 9:30 am 
Offline
Active user
User avatar

Joined: Fri Jan 08, 2010 11:02 am
Posts: 61
Took the top off the check valve, flipped the washer over – seems to have fixed it, no more escaping petrol!

Might be an idea to have a look at the O rings and pipes too though...

Thanks for all the advice.


Top
 Profile  
 
PostPosted: Thu May 13, 2010 11:44 pm 
Offline
Saab Nut
User avatar

Joined: Sun Aug 09, 2009 8:29 am
Posts: 1128
Location: Kincardine, Scotland
Car Model: 99T, C900 Aero, 9-3 Aero
its always a good idea to drop the tank if you really care about a car. seals go and pipes start to fail. but worst of all that tank is very good at hiding rust....

_________________
80 Black 99T - www.saabcentral.com/forums/showthread.php?t=104684
85 Black 900T16 - T5 and then some


Top
 Profile  
 
PostPosted: Tue Aug 22, 2017 2:52 pm 
Offline
Active user
User avatar

Joined: Wed Nov 23, 2005 6:01 pm
Posts: 287
Location: Chasetown, West Midlands
Car Model: 1990 900i 2 door
This forum really is a terrific resource.

I had a slight petrol smell on my Classic 900 2 door, ( I never really noticed it, but the other half complained that it smelt of petrol; so I had to at least humour her and take a look).
So I did a search and came up with this thread, and sure enough, it was the small drain pipe on the underside of the filler that had snapped off.
Anyhow, I managed to fix it, so let's see if she notices.

Geoff


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC


Who is online

Users browsing this forum: stuartfranco and 2 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:  
Powered by phpBB® Forum Software © phpBB Group

follow UKSaabs on Twitter



UKSaabs silhouette logo images by Mark Green www.greenphotos.com
"subsilver2" slightly bodged by UKSaabs for our own use.

:: Disclaimer ::
Comments posted here are the views of their individual authors and are not necessarily shared by the owners of this Web site.
Authors assume all responsibility for comments posted here.

UKSaabs The biggest and best privately owned UK based independent Saab forum for all SAAB enthusiasts.
Whilst we encourage our users to support our advertisers the site wishes to remain independent and therefore does not endorse any particular advertiser(s)
UKSaabs is not affiliated with Saab Cars UK or Saab Automobile AB