by kuzzen » Wed May 25, 2022 9:36 pm
I have a 1969 Patrol with 4.0L engine. When my mechanical fuel pump stopped working, I installed an electrical in line 4-7 psi fuel pump. This pump worked great for about 30-50 miles. Then suddenly when I give it full throttle the engine stalls, backfires and sometimes stops running entirely. Thinking I had a bad fuel pump I replaced it with another one. The engine will start and idle just fine. However, when I increase the RPM and let it run for a minute or so, the problem reappears. I dissembled and cleaned the carb and the problem still persist. Anyone else have this problem? If so, what did you do to solve the problem?