Quote:
Originally Posted by Two340'sman
Hi there, I'd be grateful for some advice.
My 340GL manual has run well for years.
A few days ago I filled up at the local Asda Petrol Station, after a short distance the car was tending to stall and tickover slower than usual and rough, something like 200 RPM.
The next morning I started the car and again had the same problem I disconnected the fuel feed to the carb and pumped out about 2 litres of fuel. Reconnected the feed and car ran OK. The next day I did a round trip of about 10 Miles and the car was fine. However, today the car is playing up with the same erratic and slow idle.
I did contact Asda about the possibility of contaminated fuel, they responded on the day that I filled up, several hundred cars filled from the same tank and no reported problems other than mine.
I have checked distributor, rotor arm, air filter and for air leaks around carb. The ignition leads are fairly new.
Of course, MOT is due soon, so I need to resolve this. Many thanks in advance.
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Would i be right in saying it's also harder to start cold and tempremental until it's warmed up and even then not as it should be?
If so, it sounds as if you have a build-up of condensation in the tank, worth trying as a "first port of call". Wait until the fuel level is down to ~1/4 tank (about 3 gallons left) then add 2L of meths to the tank :
https://www.toolstation.com/methylated-spirit/p99550
Cheapest way of buying it at that volume as far as i know. This will emulsify with the water and allow it to be burned off normally. If it doesn't work, it's cheap enough to know you've tried a quick, cheap and easy fix that has got rid of the condensation. Note that the best ratio is 1:10 so more than 3-4 gallons of petrol will dilute it too much to have any real effect.