Not sure if this is an issue or not....and I just need to stop worrying
I have a 2.0L CU engine with twin Weber carbs (ICT34, from memory). It runs really well and starts pretty well too, despite no chokes.
I am not an expert with carbs, or even a beginner, but will give things a go.
When running and cruising down a hill in gear with no throttle, there are little, regular back fires. Barely noticeable but there. Is this a fast idle issue or mixture issue? And if so, would you adjust out? And if so, would I need to adjust the mixture too? Is this an easy adjustment or am I liable to "cock" things up?? ....got a two week holiday starting next weekend, so don't want to upset a van that seems to be running well.....
Thanks
Carb issue??
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DoubleOSeven
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Carb issue??
It’s burning off excess fuel. Could be slightly rich or a timing issue. I’d leave it until you get back. Sounds kinda cool.
Clockwise on the idle for more air, less fuel. I turn my idle all the way in, clockwise, then out 3 turns. Without a gas analyser this is the best you can do. MOT centres can set your idle as they have to use a gas analysers to check your emissions.
Clockwise on the idle for more air, less fuel. I turn my idle all the way in, clockwise, then out 3 turns. Without a gas analyser this is the best you can do. MOT centres can set your idle as they have to use a gas analysers to check your emissions.
1990 Volkswagen Transporter 2.1 Manual
2005 Porsche 911 3.6 Manual
2012 Volkswagen Polo 1.4 Automatic
2005 Porsche 911 3.6 Manual
2012 Volkswagen Polo 1.4 Automatic
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sarran1955
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Re: Carb issue??
Hello,
Bit of a 'cropple popple' down hill on over run....
OK, so it can be your mixture, but as you have passed the emissions test recently, there will not be much of a problem...
Other sources: an air leak or hole in the exhaust, or maybe an exhaust valve seating worn....
Air-Cooled Bliss...
Cordialement,
Bit of a 'cropple popple' down hill on over run....
OK, so it can be your mixture, but as you have passed the emissions test recently, there will not be much of a problem...
Other sources: an air leak or hole in the exhaust, or maybe an exhaust valve seating worn....
Air-Cooled Bliss...
Cordialement,
Re: Carb issue??
Hi both,
Thanks for your replies.
A quick look underneath at the exhaust has revealed a small hole (3mm round). So, this will be my first point of attention. Ordered a couple of different exhaust repair things (Gungum) to provide a temporary repair. Fingers crossed, this will solve the issue - although now I have found one obvious hole I will do a more thorough search for more and repair as necessary...for the short term. Will take the repair stuff with me into France on the weekend......
Then, when funds and time allow, I will get a new exhaust and heat exchangers.....
Been an expensive year, what with the gearbox and starter motor failing.
Thanks
Mike
Thanks for your replies.
A quick look underneath at the exhaust has revealed a small hole (3mm round). So, this will be my first point of attention. Ordered a couple of different exhaust repair things (Gungum) to provide a temporary repair. Fingers crossed, this will solve the issue - although now I have found one obvious hole I will do a more thorough search for more and repair as necessary...for the short term. Will take the repair stuff with me into France on the weekend......
Then, when funds and time allow, I will get a new exhaust and heat exchangers.....
Been an expensive year, what with the gearbox and starter motor failing.
Thanks
Mike