Cold start problem
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(In Topic #201507)
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Cold start problem
I first suspected fuel contamination, but since every thing is OK when warmed up, I left this theory.
I now suspect it has something to do with the automatic choke, some cold start valve, a vacuum operated valve or similar.
I have also been advised to change the gasket underneath the carb.
Anyone run into similar problems?
Posted
Local Hero
How old are the dissy cap, rortor arm, spark plugs, HT leads and air filter?
What carb is fitted the original one with an auto choke or a webber carb?
Have you checked the fuel filler neck?
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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mark1gls said
If the car need full throttle to start it I expect it's getting flooded with fuel and that is why it's so rough to start off with then the extra petrol burns of the spark plugs once warm.
How old are the dissy cap, rortor arm, spark plugs, HT leads and air filter?
What carb is fitted the original one with an auto choke or a webber carb? Have you checked the fuel filler neck?
No, it seems it's not a problem with flooding, rather a problem with too little or too lean fuel supply.
Allthough I don't know what the problem is, what I do know is that it occurred suddenly, and the engine needs to be 100% working temperature before it starts behaving normal.
The dissy cap looks nice and dry, but age uncertain (I only owned the car one year), and the rotor arm was changed shortly before I got the car. The spark plugs are brand new, as is the air filter, but I don't know much about the HT leads. The carb is 100% original 1981 with auto choke, but I haven't checked the fuel filler neck.
It thought perhaps the carb may suffer from a too lean mix, either from auto choke malfunction, false air entering the system or lack of vacuum or something like that.
Posted
Local Hero
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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Posted
Local Hero
Dissy cap and the rotor arm do wear out and should be replaced every couple of years, HT leads are also over looked and best replaced after 4 years or 40,000 miles. Fuel filter should also be replace every 20,000 miles, air filter changed every year unless it's a K & N.
Your problem could be something else but a good service won't do the car any harm.
Properly cost you £40 to change the lot.
Coil
http://www.eurocarparts.com/ecp/c/Volkswagen_Golf_1.5_1981/p/car-parts/car-electrics-and-car-lighting/ignition/ignition-coils/?413330030&1&be75e2a08bc4fd2f0427c7e9490198db054c6c30&000197
1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
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