Register Login
Mr FIAT - Your #1 source for vintage car parts
Reply
 
Thread Tools
Old 29-04-2017   #1
Join Date: Apr 2017
Posts: 3
Thanks: 0
Trader Rating: 0
South Africa 
Fuel pump woes.

Had to replace the fuel pump as oil was leaking past the diaphragm seal. New pump looks identical but suddenly car just runs for a few kilometers and then suffers what seems to be a fuel flow problem. It is a 1995 Pacer with Weber Carb, built in South Africa under Fiat Licence. This problem has only arisen since the fuel pump was replaced
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Franksuno is offline Reply With Quote Quote 
Old 30-04-2017   #2
Join Date: Apr 2017
Location: Ashington, Northumberland
Posts: 207
Thanks: 14
Trader Rating: 0
United Kingdom 
Re: Fuel pump woes.

I had to Google it to see what sort of fuel pump your car has .. I'm new to Fiats..

You've got a mechanical pump, yes? Remove the pump and use a torch/mirror if need be to look inside .. you're looking for wear (usually a groove) in the cam/lobe/ring that actually operates the fuel pump arm.

The symptoms you describe fit a worn cam/lobe/ring. The arm of the fuel pump wears a groove in it, and eventually, because of the wear, won't operate.

You fit a new fuel pump and the car runs ok - because that pump is new and the tip of the arm is 'bedding in' to the groove. A few miles down the road, your car cuts out again ..

It was a very common problem with mechanical pumps. Removing the gasket between pump and block is a temporary get you home measure (it allows the pump arm to reach just a little further..). Another trick way back was to braze a dollop of metal onto the tip of the pump arm - so it could compensate for the worn groove .. but again, this was a temporary measure that only lasted a few weeks.

You can fit an electrical fuel pump somewhere in the system - there's no need to remove the old mechanical pump as the electric pump will push fuel through it.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

glenn2602 is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) Fitting fuel pump sender assembly back into fuel tank?! chlblnz Panda (Classic) 4 30-05-2013 13:43
(T) More Power Steering Woes - Pump? tDR Croma 17 23-06-2011 15:28
(T) Shimming Fuel Pump or Disable W/ Electric Pump FizzyNose Uno 14 04-01-2009 16:15
(T) metal pipe from water pump woes..help..... paul6693 Punto (Mk2/2b) 0 23-06-2008 21:32
(T) JTD in-tank fuel pump, fuel return? Dax Stilo 2 02-11-2007 16:45