over fueling

[Helios_Blue_Valver]

For some reason I am having a problem with my 89 valver wanting to over fuel. My fuel milage is down to 27 mpg from the 32 it was getting about a month back. Idling I can smell fuel in the exhaust while standing by the drivers door. No fuel leaks or anything. Blubbers a bit on the top end of the revs and seems down on power a bit. What do I need to be looking at here. I changed the plugs, wires, cap and rotor about 2 weeks back. Cleaned the K&N about a week ago. It's bad enough where my mate was standing out front of work when I pulled up the other day and he could smell petrol. Any ideas.

[Blue MK2]

Fuel leak (damaged pipes)?. Mine used to overfuel soo much till i sent it in for the mixture to be adjusted. It was way out.
I also tightened the hoses near the inlet manifold i think it is? to stop the fuel leaking.

Before you run the car, give all the hoses, parts a good clean.
Then run the car and sniff for fuel and look for leaks.

I was told that mk2's fuel lines get brittle over night in the freezing cold.

[Helios_Blue_Valver]

I've totally been over the car, no fuel leaks any where. Exhaust smells really stron of petrol though.

[Blue MK2]

must be a air/fuel mixture problem. Get it tuned and see how it goes

[turbo]

mine runs over fueled! not much i can do about it as the ecu sets it. i think its better to run rich and to run lean!

[golfvr6]

Use a gunston colortune or a co tester, quite easy to set up at home.

[Helios_Blue_Valver]

Use a gunston colortune or a co tester, quite easy to set up at home.

thanks mate. I'll have a look around for one. What am I looking to do as far as set up. not messed witth the injection these much.

[golfvr6]

You can buy the bits from Halfords. I like the spark plug colortune, as this is quick and easy to use. Plug it in place of the spark plug and watch the colour of the burn, at operating temp it should be blue with small tints of orange in it. The co adjustment screw is by the metering unit. Its better to use the colortune when its getting dark as its easy to see it!

[Helios_Blue_Valver]

Cheers I'll give it a go. I thought of buying an air/fuel mixture gauge and mounting it on an a pillar pod but that seems a little fast and furious for my taste.

[mk1]

You can make your own air/fuel meter. I have one in my car,  you will have to fit a lambda sensor in the exhaust. Found the circuit diagram on google, parts from Maplin, about ?10 to build.
Steve.