April 14, 20195 yr comment_573283 I updated my post Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573283 Share on other sites More sharing options...
April 14, 20195 yr comment_573284 only other far out possibility is a Godzilla pump putting out so much volume it just overwhelms the system. I am going to do some test on volume as well (a timed measurement). outside of that I am all out of suggestions. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573284 Share on other sites More sharing options...
April 14, 20195 yr comment_573285 I think I have that exact gauge (not the same one I used on my test) will try it out as well to see if there is any difference. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573285 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573286 OLD FPR - fuel pump only = ON pressure is 45 psi !!!! (See video.) Photo is for test configuration reference. IMG_1877.MOV Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573286 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573287 17 minutes ago, Dave WM said: only other far out possibility is a Godzilla pump putting out so much volume it just overwhelms the system. I'm checking service records now, looked back to 2008 and did not see any mention of fuel pump replacement. I'm going to button her up for the night, then do a deep dig on service records to see if I can find out when it was last replaced. What's the next step....? New fuel pump? Testing the vacuum from the intake manifold to the FPR? Kinda stumped here. Thanks for the help today guys, I appreciate you putting up with my amateur BS. Edited April 14, 20195 yr by mbz Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573287 Share on other sites More sharing options...
April 14, 20195 yr comment_573288 18 minutes ago, Dave WM said: only other far out possibility is a Godzilla pump putting out so much volume it just overwhelms the system. I am going to do some test on volume as well (a timed measurement). outside of that I am all out of suggestions. I think that we've all been just farting around with a bad gauge the whole time. Pittsburgh is a Harbor Freight brand. It's been fun. I have three gauges in my garage, two good ones and bad one (but with a known offset). His FPR's are probably fine. The AFM has probably been adjusted, by somebody, in the past. Might have some high resistance on the coolant temperature circuit. But, without "knowns" you're just stumbling around in the dark. Edited April 14, 20195 yr by Zed Head Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573288 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573289 22 minutes ago, rcb280z said: Haha! mbz, Glad you posted that. Optical illusion. Like I said, it was the angle of the dangle. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573289 Share on other sites More sharing options...
April 14, 20195 yr comment_573290 Actually it's a sign of inconsistency. The gauge was stuck at 3 for a while, then it's at 0. It fits the overall randomness of the readings from that gauge. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573290 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573291 3 minutes ago, Zed Head said: But, without "knowns" you're just stumbling around in the dark. Well I'm trying to provide relevant info. What other tests and results would you like to see? Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573291 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573292 Just now, Zed Head said: Actually it's a sign of inconsistency. The gauge was stuck at 3 for a while, then it's at 0. It fits the overall randomness of the readings from that gauge. OK so as to the gauge and it's consistency..... I GET IT. I will borrow one from Pep Boys tomorrow and see if I get different results. Flogging a dead horse on that point. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573292 Share on other sites More sharing options...
April 14, 20195 yr comment_573293 24 minutes ago, mbz said: Again...... You're not really winning anything by showing that your previous posts were unclear. You're just showing that what I said was right. The needle stop is zero. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573293 Share on other sites More sharing options...
April 14, 20195 yr Author comment_573294 Just now, Zed Head said: You're not really winning anything by showing that your previous posts were unclear. You're just showing that what I said was right. The needle stop is zero. Not trying to win anything Zed, just trying to fix my car. It's not a competition. Link to comment https://www.classiczcars.com/forums/topic/61841-1976-280z-engine-runs-rough-then-dies-will-not-idle/?&page=26#findComment-573294 Share on other sites More sharing options...
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