The following warnings occurred:
Warning [2] Undefined variable $search_thread - Line: 60 - File: showthread.php(1617) : eval()'d code PHP 8.1.31 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/showthread.php(1617) : eval()'d code 60 errorHandler->error_callback
/showthread.php 1617 eval



Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
overflowing carburettor

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Threaded Mode
overflowing carburettor
peterlikeman@gmail.com Offline
Junior Member
**
Joined: Nov 2020 Posts: 6 Threads: 4
Reputation: 0
Location: UK Wiltshire
Car type: 1934 Box
#1
25-11-2020, 10:36 AM
This is a stupid problem and never happened before but after going over speed bumps the carb 26VA has started massively overflowing and need to stop take off the bowl and pour the fuel have collected in tin underneath back into the tank. It is usually OK then till I get home. We have some fairly steep speed bumps in way I usually go out and try to avoid now but any ideas would be welcome. Peter
Reply
Dave Prior Offline
Woodworker
***
Joined: Aug 2017 Posts: 66 Threads: 1
Reputation: 4
Location: Herefordshire
#2
25-11-2020, 11:17 AM
Sounds like the needle valve might be sticking.
Reply
Roy Player Offline
Junior Member
**
Joined: Aug 2018 Posts: 23 Threads: 3
Reputation: 1
#3
25-11-2020, 11:57 AM
Hi 
Sounds like you need a new needle valve Available from ARP ltd tel 01202 625242
Reply
Bob Culver Offline
dogged member, NZ
*****
Joined: Aug 2017 Posts: 2,748 Threads: 31
Reputation: 95
Location: Auckland, NZ
#4
28-11-2020, 06:46 AM
Has the float sprung a leak and sunk?
Reply
e-richard Offline
Member
***
Joined: Aug 2017 Posts: 53 Threads: 11
Reputation: 1
Location: Surrey
#5
29-11-2020, 10:40 PM
You haven't by any chance recently fitted a new fuel pump ? I know it sounds unrelated, but there was a very long thread here some time ago on just this problem of overflowing Carb and the common cause was found to be a faulty pump spring.
Reply
peterlikeman@gmail.com Offline
Junior Member
**
Joined: Nov 2020 Posts: 6 Threads: 4
Reputation: 0
Location: UK Wiltshire
Car type: 1934 Box
#6
30-11-2020, 10:16 AM
Thank you for the idea and I have got a spare pump but the one on the engine has worked fine up till now. I will replace the needlevalve as soon as I can get  a new one or try and find an entirely new carb. Peter
Reply
Dave Wheatley Offline
Member
***
Joined: Aug 2017 Posts: 64 Threads: 5
Reputation: 2
#7
30-11-2020, 07:20 PM (This post was last modified: 30-11-2020, 07:22 PM by Dave Wheatley.)
Assuming that the carb has performed OK up until the speed bumps, I would first fix the flooding - most probably the carb valve . A different carb will probably have different faults, and then what?
Make sure the fuel level is correct.
Reply


Forum Jump:


Users browsing this thread: 2 Guest(s)