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C allis has two dead cylinders

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archie

03-16-2003 16:43:26




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I have a 40 or 41 model that is dead on front two cylinders. Motor has been overhauled valves ground. It run about eight hours and two front cylinders went dead. Has good compression on all four cylinders Thank you. Archie




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Steve in N.J.

03-21-2003 15:05:04




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
Archie: If the engine & head was just redone, I find it hard to believe it would be a mechanical problem. Could happen, but sounds strange to me, especially running for 8 hours without any problems. Sounds like it could be an ignition problem. As Duey, said, if you have Champion's toss them in the trash and put in a real set of sparkler's like 295 Autolites in it. Inspect the points etc. It's probably something simple.... Steve B.

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Steve Ammer

03-18-2003 14:08:51




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
Archie Had a similar problem with a Ford 300 six, good compression on all cylinders, front 3 no power, back 3 ran fine.found the intake manifold gasket to be the problem, leaked air to the front 3 but too little fuel to fire. Steve



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Steve

03-18-2003 02:41:51




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
Howdy! Sorry to hear about your problem with your AC. Make sure that you are getting spark to both the cylinders and at the right time. Double check to make sure that you have the wires on correctly. One other possibility in addition to the ones listed above does exist. I saw it happen on an N series ford one time. It had 2 dead cylinders right next to each other, numbers 2 and 3 if I remember right. When we tore it down, the head gasket had blown between those 2 cylinders. It had not gotten into the water jacket, or cooling system, just ended up with no compression because the air/fuel mix was pumped into the neighboring cylinder. Might give that some thought as well. Best of luck. steve

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M. Lane

03-17-2003 09:03:15




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
You say there is good compression on all cylinders? I would check again and then if the compression is low on the front two, then check if the valves are closing. I have a ca that did the same thing and the front two cylinder intake valves were stuck. I sprayed around the base of the stem with wd40 then took a hammer and pecked the valves down and then took a flat screwdriver and inserted between the rings of the spring and drove the valves back up working them until they freed up. Hope this works for you. You may also have a push rod slipped out from under the rockerarm on the intake side.

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Gordon

03-16-2003 22:03:39




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
check the exhaust rocker arms and see if the push rod are off the rockers and in the lifters. It will have compression but won't exhaust. the cylinders will not fire.



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Doug in OR

03-16-2003 21:05:39




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
The plug wires on these two cylinders didn't somehow get switched, did they?



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steve

03-16-2003 19:13:06




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
if you have carbon spark plugs wires, ditch them also. use only copper wires.



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Duey (IA)

03-16-2003 17:44:50




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 Re: c allis has two dead cylinders in reply to archie, 03-16-2003 16:43:26  
Ditch the Champion plugs.



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Archie

03-17-2003 16:10:35




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 Re: Re: c allis has two dead cylinders in reply to Duey (IA), 03-16-2003 17:44:50  
Thank all of you for the comments, i will check all of this out. will post back when i find problem Thanks Archie



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