Johnny_Regis
Active Member
- Posts
- 103
Hi folks,
Decided to replace my SIII's carb (a very old Webber 34 ICH) with a brand spanking new identical one. It wasn't working properly when idling, probably just mucky and some of the linkages were looking tired casing a little rusty. So rather than clean and rebuild I just put in a new carb. Old one will be on eBay soon.
Anyway, I had to prime the carb after installing and then adjusted the idle as instructed. Worked lovely! The engine was purring, exhaust chuffing in healthy rhythm. Ran it for a few mins. Left if a
couple of hours and cold started within a second of turning the key. Same story this morning after a night in the rain. Brilliant stuff!
However....
After moving the car and fiddling about cleaning up etc. I was having real trouble starting her. She started exhibiting the same symptoms as with the old carb:
1. Starting running a few seconds then cutting out.
2. Needing repeated turn overs to start.
However II....
I can now see from the new inline filter that this isn't filling with fuel. Should it be full? There seems to be a very small amount of petrol in there after several attempts to start. But 75% full when running.
I wonder if the initial starting is burning what is in the carb but the lift pump is not providing enough fuel subsequently?
I have cleaned the sedimenter bowl very recently and obviously the inline filter is new.
After months of relatively easy motoring (daily driver) I have had to replace the solenoid, exhaust and carb so it wouldn't surprise me if the lift pump wants in on the action!
Your thoughts appreciated as always...
JR
Decided to replace my SIII's carb (a very old Webber 34 ICH) with a brand spanking new identical one. It wasn't working properly when idling, probably just mucky and some of the linkages were looking tired casing a little rusty. So rather than clean and rebuild I just put in a new carb. Old one will be on eBay soon.
Anyway, I had to prime the carb after installing and then adjusted the idle as instructed. Worked lovely! The engine was purring, exhaust chuffing in healthy rhythm. Ran it for a few mins. Left if a
couple of hours and cold started within a second of turning the key. Same story this morning after a night in the rain. Brilliant stuff!
However....
After moving the car and fiddling about cleaning up etc. I was having real trouble starting her. She started exhibiting the same symptoms as with the old carb:
1. Starting running a few seconds then cutting out.
2. Needing repeated turn overs to start.
However II....
I can now see from the new inline filter that this isn't filling with fuel. Should it be full? There seems to be a very small amount of petrol in there after several attempts to start. But 75% full when running.
I wonder if the initial starting is burning what is in the carb but the lift pump is not providing enough fuel subsequently?
I have cleaned the sedimenter bowl very recently and obviously the inline filter is new.
After months of relatively easy motoring (daily driver) I have had to replace the solenoid, exhaust and carb so it wouldn't surprise me if the lift pump wants in on the action!
Your thoughts appreciated as always...
JR
