 engine warm up, rough running till warm |
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| simonr |
 Aug 19 2010, 04:11 PM
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Member  Group: Members Posts: 65 Joined: 11-July 10 From: Indianapolis Indiana Member No.: 11,925 Region Association: None  |
I have a 1976 stock FI 2.0 with 128,000 miles on her. ive had the car 2 months and have gone thru her pretty well because im a stckler for knowing where im at with my Porsches. I have replaced all vacuum hoses points, plugs , adjusted valves and timing is dead on. I live in Indiana so its not been cold yet. My car runs fine after she warms up but does not run well at all until then . She idles but going through the gears she surges pops and farts for about 5 to ten minutes of run time then she runs great. are the 914's usually this cold blooded. I dread to think what it will be like when it starts getting chilly out. Am I expecting too much? I just feel im missing something. Thanks for all imput
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| Tom |
Aug 21 2010, 10:30 AM
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
Check Brad Anders 914 D-Jetronic parts and troubleshooting info. Directly relates to your symptoms.
( After starting when the engine is cold, the idle doesn't come up while the AAR is open and AAR has been checked for proper operation, and idle performance is good after warm up.) = Cold mixture is too lean/ cold resistance of the CHT is too low. I think there is a link to his site here somewhere. Yep, at top of home page/914 info/misc 914 sites/ Brad Anders. Tom |
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Posts in this topic
simonr engine warm up Aug 19 2010, 04:11 PM
underthetire Is the AAR working? Aug 19 2010, 04:32 PM simonr Im not sure How do I check it? Aug 19 2010, 05:21 PM Jeffs9146 Take it off and blow through it then touch it to g... Aug 19 2010, 05:42 PM underthetire wow, thats a lot of words. Does it idle at about ... Aug 19 2010, 06:23 PM Jeffs9146 :lol4: Luckly I didn't have to write them... Aug 19 2010, 06:31 PM simonr The car idles right at 900 to 1000 upon start up .... Aug 20 2010, 04:35 AM simonr The AAR has strong vucuum pull upon cold start up ... Aug 20 2010, 06:23 AM vsg914 Where does it idle after warmup? Aug 20 2010, 06:42 AM
simonr
Where does it idle after warmup?
It idles right ... Aug 20 2010, 07:47 AM underthetire Ok, so if it has strong vacuum at start up, then i... Aug 20 2010, 08:42 AM Tom He said it has a strong vacuum upon cold start up.... Aug 20 2010, 11:43 AM underthetire
He said it has a strong vacuum upon cold start up... Aug 20 2010, 12:12 PM simonr I pulled the aar and have it soaking. it was stuc... Aug 20 2010, 11:49 AM Tom Yep, that could be it.
Tom Aug 20 2010, 01:08 PM simonr I reinstalled the AAR and noticed no change The sl... Aug 21 2010, 07:48 AM avidfanjpl Yep
Sounds like a CHT problem
Do you have the pr... Aug 21 2010, 02:58 PM simonr I replaced the CHT sensor with the stock unit . Ma... Aug 21 2010, 03:39 PM underthetire The extension piece helps with warm up, it was a a... Aug 21 2010, 05:05 PM simonr I do not have a high rpm at start up its about 100... Aug 21 2010, 07:31 PM underthetire well, mine used to open around 80 deg that I could... Aug 22 2010, 04:46 PM simonr Put aar in freezer for half an hour . It opened wi... Aug 24 2010, 04:22 PM |
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