Engine Performance problem
2000 Nissan Xterra 6 cyl Four Wheel Drive Manual 170000 miles
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The engine begins to shudder and try to cut off after driving 8 or 10 miles...I can keep it going for a while if I continue to rev it up, but if I really get on it it will stall out...is this the distributor?

Hi Greg,

If keeping the accelerator pressure on it runs, then it could be the idling system, spark plugs, coil packs or fuel injectors that need attention.

If it fails to respond at high speed or rpm while driving, it should be the fuel system, either the fuel filter is clogged, pump is weak or thr regulator is faulty.