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car jerkin at certain rpm
I don't know what's wrong..but at high rpm, my 89 nissan pu, 2wd, 4cyclinder will jerk and can't acclerate pass it. I can't tell at what rpm because the car does not come with a tach. It happens on every gear even on neutral. Once it hit the rpm.. it begin to jerk and i can't speed passed it. i know on the 5th gear, at 75mph, it hits that rpm and i can't go pass 75mph. I have done everything. i change fuel filter, plug, caps, check timing, i tried a different ecu and still the same. Is it fuel pressure? someone help..please
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