Question about 1985 Volkswagen GTI
What do you mean? In the fuel line? In the manifold? In the tank? In the engine/cylinders? Do you want to measure A/F mixture? I am guessing you are asking because your car wont start. I am also guessing it cranks and sputters to try to fire, but never catches and runs. Your 85 VW has three common things I'd check first. 1. The O2 sensor wires crack and the sensor quits working sending the car into limp home mode. 2. the cold start injector at the end of the plenum/intake is a 5th injector that richens the starting mixture until the car warms up... it can fail and the car will run like **** until it warms up and runs on the 4 normal injectors. 3. Before the intake plenum, the can shaped thingy with the metal flap/disc you may have tried jamming a screw driver in or pushing open with your finger is a metal flap that controls and senses incoming air and regulates the idle mixture. It has a few position sensors. Don't poke at this part or you will muck up some parameters that are difficult to re-align. If this is it, take the car to a VW mechanic. That little bugger is a real pain.
Posted on Apr 21, 2009
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Posted on Jan 02, 2017
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