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Pulled spark plugs to find the mis.... |
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farna ![]() Supporter of TheAMCForum ![]() ![]() Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 18502 |
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I'm glad you found the issue also! A cracked head will cause a "traveling intermittent misfire" as enough water gets pulled in to occasionally kill the spark. Usually more than one combustion chamber has cracks when this happens. I've never seen a cracked 196 head with cracks in only one chamber though. When it cracks there are multiples! It will run on for a long time with small cracks... right until it's finally run a bit hard (or overheated) and the cracks open up further!
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Frank Swygert
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1958 rambler super ![]() AMC Addicted ![]() ![]() Joined: Dec/10/2020 Location: Victoria BC can Status: Offline Points: 660 |
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Tomj-thanks for the excellent compliment!
trout willy- yes the engine has been running while setting timing but I didn't know there was a method to aiming the timing light at the balancer while twisting the dist. Lakeside ramblr - I'm dying to finally drive this car too after all this work!!! Beleive me, I'm the one person besides you that's dying to know, when I do, ill let you know brother! Softbuster- " what's next on the agenda?" well after figuring out the weld through primer situation, before I even knew about weld through primer I was using regular primer and paint, and watched it get destroyed thinking "huh, don't know what I'm supposed to do about that problem" yesterday I used "dominion seal" brand, and it was a copper type, and I calmly watched the heat from the welder blast it to holy helll, so now I'm going to try and use VHT brand, and go from there. I got lots more welding to do, "crazy fabricating" is what someone told me I will have to do when I weld the bottom part of the cavity, (weird double floor near end of drivers and pass side of floor) while lying on my back under the car outside, welding that close to my face for more then two hours at night was crazy. Hope I don't run into any more problems with the welding department, it's not a easy job. Farna- the head was magnetic partial checked for cracks but it was of course cold at the time, you mentioned cracks can be more noticeable when the cyl head is hot... Fingers crossed..... Edited by 1958 rambler super - Mar/03/2022 at 7:39pm |
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farna ![]() Supporter of TheAMCForum ![]() ![]() Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 18502 |
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If it was checked cold that's fine -- the magnetic process finds them even cold.
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Frank Swygert
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1958 rambler super ![]() AMC Addicted ![]() ![]() Joined: Dec/10/2020 Location: Victoria BC can Status: Offline Points: 660 |
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Cool, well, I suppose this concludes the business surrounding this post's topic, thanks for all your advice guys!
-tom.
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