April 3, 20232 yr comment_652126 What scale did you have your meter set on? Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652126 Share on other sites More sharing options...
April 4, 20232 yr Author comment_652128 Tried again. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652128 Share on other sites More sharing options...
April 4, 20232 yr comment_652129 I would say the resistance reading is higher than I would expect. At least now you know you aren't just throwing parts at the problem. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652129 Share on other sites More sharing options...
April 4, 20232 yr Author comment_652130 This is about 45min to an hour after the car ran, it’s warm but getting colder. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652130 Share on other sites More sharing options...
April 4, 20232 yr comment_652132 I don't know if you noticed Steve but yours is Ohms. MM's is kOhms Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652132 Share on other sites More sharing options...
April 4, 20232 yr comment_652136 7 hours ago, Patcon said: I don't know if you noticed Steve but yours is Ohms. MM's is kOhms Yep, I was pretty sure he would be replacing the sending unit with that much difference. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652136 Share on other sites More sharing options...
April 7, 20232 yr Author comment_652254 One step forward, three steps back. Drove round the block to test it out. Came back and inspecting the engine I see droplets from under the car. the carbs are leaking fuel. After about 10 minutes it stopped. Seems to be around the area the intake mates with the chrome baffle for the air intake. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652254 Share on other sites More sharing options...
April 7, 20232 yr comment_652256 A few things can cause the problem. Fuel pressure too high (I like 3.5 psi), floats set too high or crud in the needle and seat valves. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652256 Share on other sites More sharing options...
April 8, 20232 yr Author comment_652264 Could you adjust PSI on a mechanical pump? I’ll check the needle and floats Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652264 Share on other sites More sharing options...
April 8, 20232 yr Author comment_652288 Uggg. Because roadkill. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652288 Share on other sites More sharing options...
April 8, 20232 yr comment_652290 Yep, it's not good when those are nasty. Don't forget about the last chance filters on the banjo fittings. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652290 Share on other sites More sharing options...
April 8, 20232 yr Author comment_652292 I’ve adjusted the floats to be lower. And cleaned the fuel bowl. waiting on new gaskets to be delivered. Link to comment https://www.classiczcars.com/forums/topic/60341-resurrecting-a-1977-280z/?&page=20#findComment-652292 Share on other sites More sharing options...
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