Not too sure about the second hand carb as what if it's was something wrong with it in the past ?
I can understand about the cost of buying a brand new carb would lighten or empty the bank balance!! As I knew someone who have been down that route before!!
However if it's hadn't been done for 'Tune-Up' then that is what may needs, I had a VW 1.8 Golf Auto. Carb. with a tick over problem and a local tuning guy said it's ideal to spray Carb Cleaner into the opening mouth of the Carb and reving the engine to remove the depoists at every now and again if doing lots of stop & starting and town driving with not much of motorway driving.
A Petrol Treatment poured into the petrol tank can help with the MPG as long there is nothing wrong with the motor.
Good Luck!
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80- 90 per 20 quid across city of bristol- poor mpg even before work was done- keep trying to solve the probelm and am grateful for all advice - thankyou
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hello oil rag- i think i have replied to myself but i will try again- 80 to 90 miles per 20 quid- even before the work was done- don't want to give up - low in come- feel ther is an answer somehere , thanks in anticipation
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Hi Norrin, I had a 1987 1.3 polo about 10 years ago ( bought at 110,000 miles a SWMBO learner car)
I cant remember the fuel consumption being that bad, it was in the low 30`s to the gallon I seem to remember.
What sort of usage are you giving it? because if its stop start, lots of cold start short trips, auto choke is going to be on all the time and your figures may not be far out.
How has the fuel consumption changed over the years, and what sort of usage is it getting ( trip length etc)
compared with before.
If you can give as much detail as possible about its past and present usage, when the problem first occured, etc.. to get some sort of baseline before considering further interventions.
Regards
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Sorry to follow up my own post, But on reflection and trying to remember mine 10 years ago..
If it has the Pierburg 2E3 Carb, its possibly the autochoke thats staying on too long and likely other faults/wear in the Carb.
IMHO, this seemed a complex carb when new and just about the `last fling` in carburettor design, ( prior to fuel injection) which was complex by neccessity ( overcomplex many would say) in meeting emmision regulations.
Now 20 years have passed and I can imagine the state they are all likely to be in. It may be that your original one had problems and so did the replacement. Very likely IMHO.
Its just whats cost effective for you, if you REALLY want to keep this Polo.
You can get a manual ( or could) choke conversion. I wonder who had done all your component change work too?
I suggest you find an independent VW specialist if a general garage did your replacement work, as the only definative answer will come from an examination.
A few checks you could do
1)Check that the airfilters clean, it would not be unknown for a garage not to have changed it.
2) go for a steady run for 10 miles or so at about 60mph, stop, not letting the engine run at tickover and take the spark plugs out.
If the plugs are a dry sooty black, its likely the carb at fault.
3) Check the petrol filler `neck` for corrosion porosity under wheel arch, look for any dampness around the tank area.
4) the fuel pump diaphram used to leak petrol into the oil, but as thats been replaced it should be ok.
5) sorry to spell out the obvious, but take the handbrake off , in neutral and see if you can (with safety in mind)
roll the car forward with your shoulder easily on flat ground , to check no brakes are binding.
Also this old carburettored engine even with a pierburg that can be got working reasonably well is not going to fantastic on fuel consumption.
And apologies if I have written things you already know :)
Regards
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Oilrag I always read your informed and relevant posts with great interest. Please could you explain the purpose of check 3) in your list above? Is it to check for water getting into the fuel and/or fuel leaking from the tank or filler neck?
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if i can answer?
they leak here eventually--- its the law
the thing is you buy a new tank-- and its the devils own to fit --as there doesnt seem to be enough room to physically put the neck up the hole
unless the copy parts i used to fit were poor copies?
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Thanks for the comments Armitage, Yes the tank rots out along the filler neck under the wheel arch, petrol leaking out.
In the past I used to smother this and the whole metal tank with waterproof, Castrol CL grease. I found it lasts longer than waxoil and the oil in the grease tends to get into the seams better.
Regards
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I make that around 20-25 MPG which is poor for a petrol 1300 even under city driving conditions it should be 30+. I suspect the thermostat or that the auto choke is staying on too long..any garage worth it's salt should be able to check this.
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