Fuel starvation - is Mr AA man right?

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VinsterDJ

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Hi, I'm hoping someone may be able to help me... please!

I've got a 1972 bay running on a 1700cc engine. About 6 weeks ago it was serviced and a new JK Weber single carb was fitted.
Shortly after, I noticed occasionally when starting in 1st gear or on low revs going into 2nd, I had to pump the accelerator a few times to get it up to speed. On the level she's fine. And, the problem was very intermittent.
Anyway, I've done about 700 miles in her since and the same problem is a bit more frequent and requires more revs to pick her up. Yesterday she wouldn't start at all - for the very first time. She was firing up, turning over, but as soon as I lifted the pedal off the floor, she cut out.
Then, a few hours later I tried again and she started first time and ran fine.
So, I called the AA out. They suggested it was dirt in one of the jets in the carb. The petrol in the fuel filter looks a bit red / rusty and this was a likely cause that something had got through.
They suggested the problem was intermittent as the jet sometimes did and then didn't pick up the dirt. It happens at low revs as this is the part of the carb with the dirt. Then when the revs are higher, another part of the carb is used, where there is no dirt.
So, my question.... does this sound plausible? To sort it does the carb need removing, stripping and re fitting? We're due to go away in it on Tuesday and I'm worried that it will either let us down or be expensive to sort.
I'd be very grateful for suggestions or advice.
Thanks.
 
It would'nt hurt to clean the carbs for peace of mind but people often have problems with brand new carbs - do you have a filter on the fuel line ??.
 
Problem solved! Thankfully it's not a carb off job... You were right with the air issue.
The brake servo pipe was loose so it was taking in too much air (?), the points were replaced and the timing re set. Nothing to do with the fuel delivery at all.
Happy days.
 
VinsterDJ said:
Problem solved! Thankfully it's not a carb off job... You were right with the air issue.
The brake servo pipe was loose so it was taking in too much air (?), the points were replaced and the timing re set. Nothing to do with the fuel delivery at all.
Happy days.


Yay -- top marks dude , happy hols :D
 

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