 1.7 fuel injected won't keep started when hot, Runs great cold; won't hardly run when hot |
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| dknechtly |
 Oct 15 2017, 01:38 PM
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Yellow 914  Group: Members Posts: 68 Joined: 11-April 03 From: Wylie, TX Member No.: 560 Region Association: None  |
Guys I'm stumped. My engine was recently rebuilt in the last couple years and I'm working out gremlins. 1.7 fuel injection runs and drives great but when it gets really hot ( I'm in Dallas area), it starts to run erratic. I have to pump the gas or keep it revved high to make it home. When trying to start it. I have to keep pumping the gas to keep it going. I have...
- fuel pressure about 28-29 lbs. - Bowlsby FI harness maybe 4 years old. - rebuilt Bolwsby MPS (I've switched out with others) and get no difference - swapped CPU's; no difference - swapped coil; no difference - new 914 rubber HTS; 2200 ohms cold @68 degrees; 118 when hot - FI points near zero resistance - no vacuum leaks - recent valve adjustments (a couple just to make sure) - fuel pump relocated to front for over 30 years - pretty new Pertronix ignition (the previous had failed after 10 years) Any ideas? Thanks |
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Posts in this topic
dknechtly 1.7 fuel injected won't keep started when hot Oct 15 2017, 01:38 PM
914_teener I'd swap out the Pertronix for points just to ... Oct 15 2017, 04:39 PM 76-914 As Rob mentioned,I'd check the output on the C... Oct 15 2017, 09:44 PM dknechtly Thanks for the replies. A further update. I foun... Oct 19 2017, 04:13 PM
mgphoto
Thanks for the replies. A further update. I fou... Oct 19 2017, 05:07 PM nordfisch
[quote name='dknechtly' post='2539503' date='Oct ... Oct 23 2017, 03:38 PM Spoke You need to check the AFR, then perhaps adjust the... Oct 20 2017, 03:00 PM The Cabinetmaker Check timing? Oct 23 2017, 07:23 PM McMark Get a wideband O2 sensor to help make the symptoms... Oct 24 2017, 07:01 AM dknechtly I think I now have it figured out. I was adding r... Dec 7 2017, 06:54 PM 914_teener
I think I now have it figured out. I was adding ... Dec 7 2017, 08:22 PM 914_teener
I think I now have it figured out. I was adding ... Dec 7 2017, 10:30 PM Garland
Check timing?
Distributor loose shaft. Dec 7 2017, 09:09 PM nordfisch Well done...
Disconnected or broken HTS signals ex... Dec 8 2017, 01:29 AM  |
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