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1990 Volvo 740 turbo. 200K
My car hesitates on acceleration. Very bad on hills. Same whether engine is cold or warm.
Idles ok and when I rev the engine in park ok. Kinda feels like firing on 3 cylinders...??
Things I and shop have done:
Newer plugs, wires, new dist cap and rotor, new MAF (was throwing code for it and still comes up once in a while), injectors tested ok (they all click when in use), valves adjusted, replaced intake manifold gasket, replaced crankshaft position sensor, replaced fuel filter, timing checked.
Haven't detected vacuum leak.
compression test: 165, 165, 170, 170
Anyone have a clue what could be causing this?
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