There is no problem to start the engine, but right after start up the RPM is fluctuating between 500 and 1000 for a minute or two. When I try to drive it it behaves as if the fuel was cutting off. It does not stall but lacks power, same as if the tank was empty and running on fumes. After few minutes of “no power symptoms” the car drives O.K. Yes, I have changed check valve and fuel filter, but it didn’t solve it. What is the next suspect? The car just turned 300K km. It is 740 Turbo 1991.
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'91 740 turbo SW, '92 940 turbo, '94 940 Regina SW (PL)
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