Help - Djet running way too rich |
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Help - Djet running way too rich |
Halfnelson |
Jul 23 2021, 06:51 AM
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#1
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Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
Help - my new to me 1973 1.7 Djet came running really sweet, but almost immediately developed the 'hunting tick-over' of lean running / air leak. We replaced all the vacuum pipes, found one of the inlet gaskets had a very slight leak. Seems somewhere along the line things have been tweaked to compensate for the leaks so that now they're cured, the car is running super rich. Having had a L-jet for years the Djet is new to me so any advice on where to start first would be much appreciated. Thanks Chris
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Halfnelson |
Aug 11 2021, 08:45 AM
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#2
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Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
Thanks for everyone's feedback on this. I've finally got an update on things. After a couple of false dawns I'm hoping we've nailed the issue. Total work included:
Checking MPS - OK New fuel lines, filter and fuel pump Sorting the ignition as the spark was weak - so new coil etc Going through all wiring and fuses New CHT sender New plugs for injectors My guess is multiple small faults adding up to a lot of head scratching when we thought the problem was solved... only for it not to be. Done a few local trips including a car show at the weekend. Fingers crossed now for a longer test drive. |
Halfnelson |
Aug 20 2021, 07:53 AM
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#3
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Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
OK - so not sorted after all. (IMG:style_emoticons/default/headbang.gif)
After about half a dozen test drives with stops, restarts, refuelling etc went down the road to today, car stalled at junction and refused to restart. Strong petrol smell. Disconnected injectors and it would at least try and start but still lots of fuel still coming out of the exhaust so recovered home. What's adding all the excess fuel with the injectors disconnected? Could the cold start injector be faulty? |
Bartlett 914 |
Aug 20 2021, 07:58 AM
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#4
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
OK - so not sorted after all. (IMG:style_emoticons/default/headbang.gif) After about half a dozen test drives with stops, restarts, refuelling etc went down the road to today, car stalled at junction and refused to restart. Strong petrol smell. Disconnected injectors and it would at least try and start but still lots of fuel still coming out of the exhaust so recovered home. What's adding all the excess fuel with the injectors disconnected? Could the cold start injector be faulty? I would suspect an intermittent CHT or simply a poor connection with it |
Halfnelson |
Aug 20 2021, 09:34 AM
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#5
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Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
Thanks Mark - have replaced the CHT but will test that again and also check the connection. |
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