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K-jet equipped Volvo dumping too much fuel 200 1981

posted by  Volvo From Heck on  Mon Nov 30 16:34 CST 2015
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last visit: Mon Oct 13 20:56 CST 2014
[RELATED]

murrdogg wrote--"I've read about a vacuum line from the fuel pressure regulator(FPR) that if it is full of gas, the FPR is bad."
K-jet does not have the same kind of pressure regulator like the electronic injection systems. If you look under the intake manifold near the front you'll see a rectangular aluminum unit - about 1.5 inches by 3 inches - with two fuel lines and an electrical connection. That part is called the Control Pressure Regulator. It has a bi-metallic heating element inside with a valve and it's job is to allow one pressure at cold start-up (applied to the Fuel Distributor) and then gradually changes pressure as the motor warms. If that unit is not working properly it could cause a very lean mixture or very rich mixture. -- Dave






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