Lotus Elan

Weber carb issue

PostPost by: MartinH » Tue Mar 21, 2023 9:23 am

I have had the engine out of my car for a gearbox change and am in the final stages of bolting on the ancillaries. I picked up the carbs last night to give them a wee clean and noticed the plate, shown below in the diagram between the 2 throats of one of the carbs, was hanging off with the top screw missing and the other finger tight.

The plate is listed in exploded views as the "cap for pump opening". Does this mean accelerator pump? I note some of these plates have a central hole, mine does not. Is this important?

The parts seem to be availble to order from weber distributors so I should be able to put it back together OK.

DCOE.jpeg and
1967 Elan convertible S4 body and Spyder chassis
Ducati Monster S4
Ducati 1098s
Second Gear
Second Gear
Posts: 103
Joined: 03 Jun 2012
Location: Normandie France

PostPost by: 2cams70 » Tue Mar 21, 2023 9:58 am

It's not that important whether that plate has a hole in it. Suggest you don't wee on your carburettors to clean them though. It might cause serious corrosion.
1970 Ford Escort Twin Cam
1972 Ford Escort GT1600 Twin Cam
1980 Ford Escort 2.0 Ghia
Peugeot 505 GTI Wagons (5spdx1) (Autox1)
2022 Ford Fiesta ST.
Coveted Fifth Gear
Coveted Fifth Gear
Posts: 2050
Joined: 10 Jun 2015
Location: Australia

PostPost by: Craven » Tue Mar 21, 2023 12:21 pm

Yes, accelerator pump, the hole in this plate is considered a helpful addition when dealing with a leak of fuel from this area, lots of discussions as to why on this site but useful mod on all 40’s.
Coveted Fifth Gear
Coveted Fifth Gear
Posts: 1631
Joined: 14 Sep 2013
Location: south coast uk

PostPost by: alan.barker » Wed Mar 22, 2023 6:05 am

You need the hole in to prevent a wee dribble when you stop the Engine.
All new plates i see have this hole/modification.
Lots of posts about this.
Alan.b Brittany 1972 elan sprint fhc Lagoon Blue 0460E
Coveted Fifth Gear
Coveted Fifth Gear
Posts: 3701
Joined: 06 Dec 2008

Total Online:

Users browsing this forum: No registered users and 11 guests