 Cutting Out, Bad miss- Help Needed |
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| PDXBob |
 Oct 21 2024, 02:30 PM
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Newbie  Group: Members Posts: 44 Joined: 16-May 20 From: Portland Oregon Member No.: 24,272 Region Association: Pacific Northwest 
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Frustrated by a Bad Miss. hope the 914World Experts can help me out!
On my 1975 914 (1.8) I have had a sporadic bad miss for the last 6 to 8 months. Here are some of the details. - it’s been doing this for at least 6-8 months. Some days doesn’t miss at all. But today it was bucking so hard I didn’t know if I’d make it home. This was the worst it’s ever been! - When it misses it feels like it’s bucking, that is, doesn’t feel like one cylinder miss but total cut out. - it’s worse under a load, e.g. when going up a steep hill. - In the driveway today I could rev it up and hold it while standing still with no miss. Didn’t matter if I held it at 2,000, 3,000 revs- didn’t miss. - not sure if fuel or electric issue. Any tests I could do to determine? - Does it in all gears. - The Tac does NOT fluctuate when it cuts out. - The lights and radio do NOT flicker or stop. Any suggestions would be greatly appreciated. Thanks in Advance! PDXBob |
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Replies
| dr914@autoatlanta.com |
Nov 5 2024, 10:25 AM
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914 Guru Group: Members Posts: 8,103 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
I would first replace the points condenser and set dwell timing, as the points fire the spark plugs and the injectors. Also check the grounds at the top rear right of the block and the resistor block. Finally install a fuel pressure guage and make sure it stays steadily on 35 lbs
QUOTE(PDXBob @ Oct 21 2024, 01:30 PM)  Frustrated by a Bad Miss. hope the 914World Experts can help me out! On my 1975 914 (1.8) I have had a sporadic bad miss for the last 6 to 8 months. Here are some of the details. - it’s been doing this for at least 6-8 months. Some days doesn’t miss at all. But today it was bucking so hard I didn’t know if I’d make it home. This was the worst it’s ever been! - When it misses it feels like it’s bucking, that is, doesn’t feel like one cylinder miss but total cut out. - it’s worse under a load, e.g. when going up a steep hill. - In the driveway today I could rev it up and hold it while standing still with no miss. Didn’t matter if I held it at 2,000, 3,000 revs- didn’t miss. - not sure if fuel or electric issue. Any tests I could do to determine? - Does it in all gears. - The Tac does NOT fluctuate when it cuts out. - The lights and radio do NOT flicker or stop. Any suggestions would be greatly appreciated. Thanks in Advance! PDXBob |
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Posts in this topic
PDXBob Cutting Out Oct 21 2024, 02:30 PM
rjames When was the last time you overhauled your distrib... Oct 21 2024, 03:44 PM
PDXBob
When was the last time you overhauled your distri... Oct 21 2024, 10:16 PM Olympic 914 I had a similar issue coming back from Okteenerfes... Oct 21 2024, 04:44 PM nivekdodge
I had a similar issue coming back from Okteenerfe... Nov 4 2024, 06:27 PM technicalninja :agree: :agree: :agree:
Especially if you don... Oct 21 2024, 05:18 PM worn Would it be correct to say that the motor runs smo... Oct 21 2024, 05:36 PM PDXBob
Would it be correct to say that the motor runs sm... Oct 21 2024, 10:10 PM PDXBob Thanks all. I’ll start working on various sugge... Oct 21 2024, 10:12 PM iankarr Cutting out like that can be caused by obstruction... Oct 22 2024, 01:21 AM PDXBob
Cutting out like that can be caused by obstructio... Oct 22 2024, 05:28 PM Fazasport I am going to speculate that you may have a proble... Oct 22 2024, 04:46 AM PDXBob
I am going to speculate that you may have a probl... Oct 22 2024, 05:31 PM ClayPerrine
I am going to speculate that you may have a probl... Nov 5 2024, 06:34 AM emerygt350 Not sure if the 1.8 has the same TPS as a 2.0... ... Oct 22 2024, 05:48 PM Artfrombama My $.02
Engine missing under load. Classic s... Oct 25 2024, 10:35 AM 930cabman
My $.02
Engine missing under load. Classic ... Oct 25 2024, 02:07 PM nivekdodge Like Olympic 914, I had a miss I was chasing and c... Oct 26 2024, 09:19 AM PDXBob I’m going through and checking stuff to try and ... Nov 4 2024, 06:05 PM brant Don’t forget to adjust the valves. Set fuel pres... Nov 5 2024, 10:11 AM PDXBob Thanks Clay and Dr914. Gives me A few more thing... Nov 5 2024, 02:42 PM PDXBob Ok, so I checked out my TPS and inspected and fixe... Nov 8 2024, 01:30 PM JeffBowlsby Our original engine bay harnesses are 50 years old... Nov 8 2024, 05:24 PM Osnabruck914 Every time I have had those symptoms, it was simpl... Nov 9 2024, 11:51 AM brant The fact that you had to repair a few connectors m... Nov 9 2024, 01:20 PM brant Duplicate post Nov 9 2024, 01:20 PM PDXBob I still have the cutting out (bucking) issue and h... Nov 27 2024, 08:05 PM |
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