Still chasing a surge or a miss on L-jet 2056 |
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Still chasing a surge or a miss on L-jet 2056 |
jmargush |
Jul 30 2014, 07:51 PM
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#1
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Member Group: Members Posts: 458 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
Still working getting the 2056 L-jet to run well.
I have a surge or miss under hard acceleration 3500rpm and above. It doesn't happen every time and I think it is more likely to happen under rapid wide open throttle, but I can get good acceleration pulls sometimes. If it does start to surge and I stay in it I stay on the throttle I can hear a pfft or burp of air which I think is coming out of the exhaust. Fuel pressure (with Harbor Freight gauge) is reading 39psi under hard acceleration Timing is set to 28 dgrees BTDC@3500 rpm New plug wires and plugs Cleaned distributor and regreased (running Pertronix) Tried 2 different Bosch coils with same results Could the fuel pump volume be out of spec and still deliver pressures like I am seeing?(what are the specs for fuel pump volume test?) Should I try a different timing setting, more or less advance? Could the potentiometer in the AFM be hitting a dead spot? Or could a bad plug wire give intermittent issues like this? Starting to get old car-ed out! |
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