 Bog down after warm up, Bog down after warm up |
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| tsvo |
 Nov 29 2016, 07:22 AM
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#1
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Member  Group: Members Posts: 123 Joined: 30-January 16 From: Chicago Member No.: 19,616 Region Association: Upper MidWest 
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I am looking fsome help. I have a 1973 1.7L. I have replaced the points and wires as well as general tune up. It starts fine and seems to idle OK. However after 30 - 45 Min of running it starts to bog down. The car loses power, idle drops then backfires. The car gets a quick power surge at the time of backfiring. THe cycle then repeats. I let the car cool down for a little while and it usually goes away.
Any sugestions? |
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| BeatNavy |
Nov 29 2016, 10:54 AM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,962 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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Fuel injection or carbs? Initial thought is you're running way too rich or your timing is over-advanced. If FI, there are a couple of potential causes including blown MPS, fuel pressure too high, wonky CHT, etc. When you replaced the points, did you set dwell and timing? You need to adjust timing after changing or adjusting points...
If it is FI you may want to start getting familiar with this site: http://members.rennlist.com/pbanders/djetparts.htm |
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| tsvo |
Nov 29 2016, 12:38 PM
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#3
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Member Group: Members Posts: 123 Joined: 30-January 16 From: Chicago Member No.: 19,616 Region Association: Upper MidWest
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QUOTE(BeatNavy @ Nov 29 2016, 10:54 AM)  Fuel injection or carbs? Initial thought is you're running way too rich or your timing is over-advanced. If FI, there are a couple of potential causes including blown MPS, fuel pressure too high, wonky CHT, etc. When you replaced the points, did you set dwell and timing? You need to adjust timing after changing or adjusting points... If it is FI you may want to start getting familiar with this site: http://members.rennlist.com/pbanders/djetparts.htm Thanks, it is an FI. I did set the timing, but perhaps I need to recheck it. Any other thoughts are appreciated. |
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Posts in this topic
tsvo Bog down after warm up Nov 29 2016, 07:22 AM
76-914 Did you replace the condenser also. Have you check... Nov 29 2016, 10:12 AM
tsvo
Did you replace the condenser also. Have you chec... Nov 29 2016, 12:39 PM rmital
.... If FI, there are a couple of potential cause... Nov 29 2016, 01:17 PM tsvo
.... If FI, there are a couple of potential caus... Nov 30 2016, 06:47 AM Perry Kiehl Check the MPS, CHT, and the distributor.
I work... Nov 29 2016, 05:28 PM BeatNavy
I worked on a car that had a similar problem, whe... Nov 29 2016, 06:40 PM tsvo
Check the MPS, CHT, and the distributor.
I wor... Nov 30 2016, 02:08 PM BeatNavy Be methodical and follow the directions on that li... Nov 30 2016, 06:58 AM tsvo
Be methodical and follow the directions on that l... Nov 30 2016, 02:10 PM Ansbacher Had similar problem and turned out to be bad coil.... Nov 30 2016, 11:23 AM tsvo
Had similar problem and turned out to be bad coil... Nov 30 2016, 02:09 PM |
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