 Car is running too lean, 1974 LE 2.0 running hot - spark plug shows too lean |
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| Daiberl |
 Aug 23 2012, 09:44 PM
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#1
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Senior Member  Group: Members Posts: 574 Joined: 22-June 09 From: Seattle, WA Member No.: 10,497 Region Association: Pacific Northwest  |
I finally had time to check my LE out and why the car is running hot. The spark plug shows that the car runs lean, adjustment knob at ECU is full rich already. MPS checked and leaks 3.5 down from 10in so based on pbanders fine. No vacuum leaks, flaps at oil cooler are open, timing fine.
What can cause the car to run too lean? Would a wrong CHT cause this, I changed the CHT when I dropped the engine last time and didn't drive the car on longer trips. |
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| Dave_Darling |
Aug 27 2012, 09:03 PM
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#2
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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Is the cooling system complete? Do you have the flaps inside the cooling tin? Any debris in the fan? Any mouse nests under the tin?
--DD |
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| Daiberl |
Aug 27 2012, 09:44 PM
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#3
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Senior Member Group: Members Posts: 574 Joined: 22-June 09 From: Seattle, WA Member No.: 10,497 Region Association: Pacific Northwest |
QUOTE(Dave_Darling @ Aug 27 2012, 08:03 PM)  Is the cooling system complete? Do you have the flaps inside the cooling tin? Any debris in the fan? Any mouse nests under the tin? --DD Engine was rebuild, no mouse nests or debris, flaps are installed and in the open position at the moment to make sure the thermostat is not the issue. |
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Posts in this topic
Daiberl Car is running too lean Aug 23 2012, 09:44 PM
Dustin The knob on the ecu only adjusts mixture when the ... Aug 24 2012, 01:15 AM Bartlett 914
I finally had time to check my LE out and why the... Aug 24 2012, 07:41 AM Jeff Bowlsby TS1 can also be unplugged to give a slight richnes... Aug 24 2012, 09:05 AM
Daiberl
TS1 can also be unplugged to give a slight richne... Aug 24 2012, 11:45 AM Jeff Bowlsby TS1 is the Air temp on the air plenum Aug 24 2012, 01:31 PM Daiberl Ok, finally I had some time yesterday to check the... Aug 27 2012, 10:19 AM 914itis
Ok, finally I had some time yesterday to check th... Aug 27 2012, 08:18 PM Jeff Bowlsby Thats a normal oil temp reading for the stock guag... Aug 27 2012, 10:40 AM JRust Yeah I wouldn't sweat your temps there. I woul... Aug 27 2012, 12:48 PM Daiberl Ok, then I will give it another try and will repor... Aug 27 2012, 07:01 PM PancakePorsche I raised my fuel pressure to 32 psi and 2 steps co... Aug 29 2012, 03:30 AM Racer Chris Oil temp isn't a good indicator of fuel mixtur... Aug 29 2012, 07:41 AM Bleyseng
I finally had time to check my LE out and why the... Aug 29 2012, 09:12 AM TJB/914 George Hussey @ AA just fixed my slightly lean eng... Aug 29 2012, 09:51 AM |
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