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Intermittent miss

Posted By Rono 8 Years Ago
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Rono
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This is a problem I have been chasing down for a while. Ever since I made a pass at the Winterport Dragway in Maine. #7 cylinder spark plug is wet with fuel, but compression is good (160 psi). The distributor has Pertronix Ignition. When I pulled the cap and rotor, the cap appears burned at all contacts. When I removed the rotor, I get a very slight side to side movement of the distributor shaft (maybe .005") but no movement when the rotor is sitting inside the Pertronix collar. The cap and rotor are 10 years old, but they don't have that many miles on them. So, do I try a new cap and rotor first before replacing the distributor?http://forums.y-blocksforever.com/uploads/images/6f8c6fcf-0bb5-4aea-a064-4c0c.jpghttp://forums.y-blocksforever.com/uploads/images/adebc73a-941b-4e14-883d-d315.jpgThanks, Rono

http://forums.y-blocksforever.com/uploads/images/4a19e870-e870-4f63-a0a4-db5b.jpg  Ron Lane,  Meridian, ID




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Forum Post Intermittent miss By Rono ( 8 Years Ago )
Forum Post Have you checked to see if you are getting spark to #7 cylinder or... By 55 GLASS TOP ( 8 Years Ago )
Forum Post If you've got a consistent timing reading with a light up till the... By miker ( 8 Years Ago )
Forum Post IMHO Looking at the cap contacts, it appears that none of them have or... By DryLakesRacer ( 8 Years Ago )
Forum Post What kind of shape are the plug wires? By Genuinerod ( 8 Years Ago )
Forum Post Thanks for the responses guys! I am running an MSD box with a... By Rono ( 8 Years Ago )
Forum Post Dry lakes has a good eye, I missed that. I'm going to throw this out... By miker ( 8 Years Ago )
Forum Post Dry Lakes; I don't think your crazy and I understand what you are... By Rono ( 8 Years Ago )
Forum Post That you have play without the rotor and none with the rotor must mean... By charliemccraney ( 8 Years Ago )
Forum Post Rono, I have seen this problem before on a 59 y-block... By john2747 ( 8 Years Ago )
Forum Post john is right re the wire clip,if it is not in the grove it will allow... By 2721955meteor ( 8 Years Ago )
Forum Post Hello I am not the best guy with a wrench ,I am sure there are guys... By 55 GLASS TOP ( 8 Years Ago )
Forum Post Ron, Did you try rotating the magnet ring to see if the miss moves to... By Sandbird ( 8 Years Ago )
Forum Post It seems like replacing the cap and rotor has cured the problem...for... By Rono ( 8 Years Ago )
Forum Post Well, I lied. The problem still persists. After reading the post... By Rono ( 8 Years Ago )
Forum Post Rono, you're trying my memory way bad. When I had my first y block in... By miker ( 8 Years Ago )
Forum Post i use the ford duraspark2 on my 57ranchero,original style cap and... By 2721955meteor ( 8 Years Ago )
Forum Post John2747 has it. I thought about it and this morning was going to... By DryLakesRacer ( 8 Years Ago )
Forum Post Just another thought. Could the clearance between the bottom of the... By 57RancheroJim ( 8 Years Ago )
Forum Post As long as you are sure that the distributor is about where you want... By charliemccraney ( 8 Years Ago )
Forum Post Just curious you have miss on one cylinder. Have you checked the ohms... By 55 GLASS TOP ( 8 Years Ago )
Forum Post Charlie; Thanks for the tip! The dizzie went right in when I held it... By Rono ( 8 Years Ago )
Forum Post Just swap at the cap and plug with the wire next to the suspect one.... By MoonShadow ( 8 Years Ago )
Forum Post Just wondering if you ever found the source of your miss By 55 GLASS TOP ( 8 Years Ago )
Forum Post Glass Top; Yes I did. It was a worn distributor shaft bushing causing... By Rono ( 8 Years Ago )
Forum Post Those are Chinese MSD imitations. I know people have used them.... By charliemccraney ( 8 Years Ago )
Forum Post Good advice Charlie. I did buy a new MSD distributor for my blown... By Rono ( 8 Years Ago )
Forum Post One small problem that has developed now is an erratic idle when the... By Rono ( 8 Years Ago )
Forum Post Just a thought. If the vacumn advance is hooked up, either ported or... By miker ( 8 Years Ago )
Forum Post Mike; Good thoughts. When I set the initial advance, I did disconnect... By Rono ( 8 Years Ago )
Forum Post Since ignition is what you have changed, ignition is the most likely... By charliemccraney ( 8 Years Ago )


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