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| Miss in #1 https://slantsix.org/forum/viewtopic.php?t=61433 |
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| Author: | Elivis' Dart [ Mon Jul 24, 2017 6:20 pm ] |
| Post subject: | Miss in #1 |
74 225 all stock Dead miss in # 1 cylinder What I have done: Adjusted valves, again Replaced plug Replaced wire It is getting spark Checked for vacuum leaks around manifold Carb rebuilt about a year ago Valves all looked OK when I had head off. 60k on engine All thoughts and suggestions are welcome. Do not want to pull head off again. Broke bolt off and had to pull it about a year ago. The only other odd thing, which may just be normal for these engines, is that my PCV makes a lot of noise. Yes, I replaced it. Still same noise. Thank you in advance |
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| Author: | SlantSixDan [ Mon Jul 24, 2017 6:25 pm ] |
| Post subject: | |
Does № 1 always misfire, or only sometimes? |
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| Author: | Elivis' Dart [ Mon Jul 24, 2017 7:07 pm ] |
| Post subject: | |
At idle I believe all of the time. When you pull the wire there is no change in idle. At higher RPM it is tough to tell. I guess I should pull wire and take it for a drive and see if I can tell a difference. I think my answer is all of the time. It is always #1 missing. It does not move around. |
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| Author: | Joshie225 [ Mon Jul 24, 2017 8:56 pm ] |
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Have you done a compression test? |
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| Author: | Louise76 [ Mon Jul 24, 2017 9:36 pm ] |
| Post subject: | |
On our family Darts #1 always runs cooler then the others and #1 spark plug is usually the one to load up first with carbon & gunk, indicating a cold running cylinder. Could be a valve/guide sticking on that #1? If that valve & guide are worn, you might have excess oil burning (coking) on the valve stem and intermittently sticking, especially when the engine is just starting to warm up. Probably OK when fully warm? Sometimes if you find one cylinder running cooler, you can use an alternate spark plug with a higher heat range: that is, use a "hotter" plug to help burn the gunk better. Maybe someone here could point you toward that part number higher heat range plug? My 2 cents. |
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| Author: | wjajr [ Tue Jul 25, 2017 5:30 am ] |
| Post subject: | |
Carbon track or crack in distributor cap? |
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| Author: | Elivis' Dart [ Mon Aug 14, 2017 5:07 pm ] |
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Thanks for the replies Put a tank of shell premium in it and the miss went away Not going to question it Just going to drive it This car is going to drive me nuts......" |
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