 Engine Stumbles When Cold |
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| 73jef74 |
 Oct 24 2006, 04:22 PM
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#1
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Member  Group: Members Posts: 50 Joined: 24-June 05 From: Spokane, WA Member No.: 4,324  |
73 2.0 stumbles when cold. Is worse at lower RPMs. Will not pull smoothly from 2000 RPM when cold. Does not like to stay running when first starting. These conditions improve as engine is warmed up. Any suggestions?
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| mihai914 |
Oct 24 2006, 04:29 PM
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#2
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Senior Member Group: Members Posts: 800 Joined: 2-March 05 From: Montreal, QC Member No.: 3,697 Region Association: None 
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How does it idle when cold, RPM wise?
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| 73jef74 |
Oct 24 2006, 05:16 PM
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#3
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Member Group: Members Posts: 50 Joined: 24-June 05 From: Spokane, WA Member No.: 4,324 |
The idle when cold, once you get it running, seems OK.
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| Marlow |
Oct 24 2006, 06:18 PM
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#4
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Member Group: Members Posts: 311 Joined: 14-August 03 From: Manassas, VA Member No.: 1,027 |
What kind of rpm's are you seeing when the engine is cold?
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| 73jef74 |
Oct 24 2006, 08:12 PM
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#5
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Member Group: Members Posts: 50 Joined: 24-June 05 From: Spokane, WA Member No.: 4,324 |
About 900 RPM.
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| So.Cal.914 |
Oct 24 2006, 08:18 PM
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#6
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Simple answer:
Let it warm up before you drive it. |
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| Bleyseng |
Oct 25 2006, 07:50 AM
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#7
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
PB Blaster the crap outta the AAR valve to free it up. Check that its opening up all the way and closed after 5 min or so after running the motor. Idle should be cold 1200-1800 rpms
R U running the right CHT? 017 # with a 270 ohm resistor inline with it. Otherwise its not going to idle right due to too lean a idle mix. Get a tune up, all the right parts, valves adjusted, and then drive the car for 15-20 minutes so its hot. Then adjust the idle to 950rpm with the knob on the ECU about where the factory notch is and using the air bleed. Now you are set up close to good and when it starts up cold it should idle at 1500 bout and then slowly go down to 950. There will be a period of light hunting until is fully warm. (IMG:style_emoticons/default/shocked[1].gif) |
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