Re: Re: 1952 Paris built Normale RSJ 834

@OSL282 wrote:

What I have found out today when the new one arrived is that the bottom of the gauze on the pickup strainer sits circa 1.5cm above the bottom of the tank, so that’s circa 7.5% of the tank volume.

In contrast to that, I have been working on an issue with my new 4CV for the past month. Overtime I trotted up the road I would break down. It was fuel starvation for sure – changed out the pump, carb, tubes and that was after checking for blockages in the tank and removing the pickup and placing it in a jerry can and running the car fine. I was going crazy, thinking the Gordini engine was using more fuel than the pump was capable of. I was just about to buy an electric pump when I decided to go through it all again and removed the tank.

I pulled the pickup pipe and fattened up the gauze as it was a little bent. Placed it back into the tank and noticed it was sitting proud. I measured the pickup pipe and it was ½ cm longer than the depth of the tank and hence it was sitting directly on the bottom and closing up the hole – so it let enough fuel through for idle but under pressure it just was not enough. I trimmed the pipe and it flows perfectly now with the first successful road test yesterday. So I thought I had learnt my lessons regarding new parts when I did my Traction – but I have just had a very time consuming reminder.

Good call on the new tank – I did the same for my Traction.