1.7L running rough in the mid RPMs, Potential Causes of rough running (MIDS) |
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1.7L running rough in the mid RPMs, Potential Causes of rough running (MIDS) |
scwade |
Oct 12 2003, 08:43 PM
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#1
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Newbie Group: Members Posts: 10 Joined: 31-August 03 From: santa clara, ca Member No.: 1,091 |
I have a 1971 1.7L (with big bore kit) running FI. I'm having some odd behavior between 4,000-4,300 RPM. It runs rough at that RPM regardless of gears/speed.
I've checked timing at 3,500 (fine). I've swapped spark plugs (bosh) // got rid of some pre-detination ping, but still have the roughness (cutting out) I've put in 91 octane (best I can get here in CA) Still happens. PS - it idles rough as well. When I remove the "retardation" line it idles fine. I've not tried to run it full boar with no retardation though. Any ideas? Scott |
scwade |
Nov 6 2003, 11:58 PM
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#2
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Newbie Group: Members Posts: 10 Joined: 31-August 03 From: santa clara, ca Member No.: 1,091 |
OK - I'm going for the valve adjustment next. I also returned and ordered a replacement dizzy. Although, I'll just return it if the valve adjustment does the trick. So, your advice doesn't come too late. I'll just have to call around town to see if I can locate the electronic points (as I'd like them this weekend). Then try to figure out a way to get the exact 27 mark. I think I saw a marking kit somewhere.
I'll be back with an update. Thanks |
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