sdthoren Posted June 16, 2022 Share Posted June 16, 2022 I picked up a 1984 Mack R model with an E-6 needing some attention. The injection nozzle fuel inlet tubes between the pump and injectors 4-6 were out, along with the corresponding injectors. The part that has me puzzled was that it seemed the inlet tubes were bent in such a manner that the sequence at the pump, from front to back was line 1, 2, 3, 6, 4, 5 (vs 1, 2, 3, 4, 5, 6). It has a UTDS / Bosch / AMBAC PLM Model 300 injection pump on it. Did somebody mess with this thing and bend lines all screwy? Seems odd the tube/line sequence would not be 1-6 front to back on the pump. I had it running that way, but was pushing a lot of fuel out the exhaust. It also had a 45 second interval where rpms would drop way down, then pick back up (sticky governor after sitting a number of years)? Thanks in advance for thoughts/advice. Quote Link to comment Share on other sites More sharing options...
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