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Y Block won’t fire.

Posted By 55F100RON 7 Years Ago
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55F100RON
Posted 7 Years Ago
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Hitting on all eight cylinders

Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)Hitting on all eight cylinders (20 reputation)

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Last Active: 7 Years Ago
Posts: 9, Visits: 1.8K
My 55 F-100 has been sitting for 42 years in the back of a climate controlled shop. Running gear is all original V8 manual. I saw this truck run before it was parked. But, it was several weeks before it was parked. Ive been trying to buy it for 40 of those 42 years so I’ve layed eyes on it every month or so that whole time. Since I’ve had it home, I’ve converted it to 12v neg ground. It now has Pertronix flamethrower ignition. I have put my hand over the carb and have great vacuum. I’ve poured gas down the carb and have it blow out the spark plug holes when I crank it over. I pulled the number 1 plug out and layed it on the manifold with plug wire attached. I then put my finger in the plug hole and cranked it over. The plug fired, extreme spark flamethrower remember, as the compression blew my finger off the hole. I followed this by pulling each plug and performing the same test. I realize that’s not an exact timing science there but close enough to have some kind of reaction. I have moved the distributor from full advance to full retard slowly while cranking the engine. So what am I getting at. I cannot get so much as a sputter, spit, kickback or backfire out of this engine. I’m 72 so this ain’t my first rodeo. Ive had everything from 3’ of fire out the carburetor to a kickback so hard it broke the snout off the starter. I know I’ll have to eventually change the plugs and wires but I’ve never had one not do something especially when it seems all the ingediates are there. Is it possible the plugs (all eight) are not grounding in the holes? Is it possible for a plug to fire in the air and not in the cylinder? But all eight of them? It’s almost like the wires are one hole off one way or the other but why. The truck was pulled into the back of the shop and not touched for 42 years. The owner died a few months back and I never got around to asking him why he parked it. I assumed since he bought another F-100 that he just liked it better now I’m beginning to wonder. Thanks for any help.

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Forum Post Y Block won’t fire. By 55F100RON ( 7 Years Ago )
Forum Post Since you say it kicks your finger out with compression, I would... By Joe-JDC ( 7 Years Ago )
Forum Post I’ll give that a go this PM. Thanks By 55F100RON ( 7 Years Ago )
Forum Post ... By 55F100RON ( 7 Years Ago )
Forum Post if you have brakes tow it. By darrell ( 7 Years Ago )
Forum Post I’ve done that on occasion. I don’t have brakes this time so I’ve got... By 55F100RON ( 7 Years Ago )
Forum Post Any progress? I wanted to mention checking the firing order. Often... By MoonShadow ( 7 Years Ago )
Forum Post So I’ve dug a little deeper. It’s firing a few degrees before TDC. I... By 55F100RON ( 7 Years Ago )
Forum Post Pretty low compression, have you tried a shot of starting fluid? By Sandbird ( 7 Years Ago )
Forum Post Squirt some oil in the cylinders to coat the cylinder walls and see if... By charliemccraney ( 7 Years Ago )
Forum Post I’m hoping that’s the case if I can get it started. On the down side... By 55F100RON ( 7 Years Ago )
Forum Post No one on this site is likely to encourage replacing the Y-block with... By PF Arcand ( 7 Years Ago )
Forum Post The first thing I did when I got home was disconnect the fuel line and... By 55F100RON ( 7 Years Ago )
Forum Post Hi 55F100RON, Anyone who reads my posts knows I am a feeble mechanic... By MplsMike ( 7 Years Ago )
Forum Post Mike, Thanks for comment. This has a pertronix conversion so there are... By 55F100RON ( 7 Years Ago )
Forum Post Ron with the low compression numbers you are at or below the ragged... By Pete 55Tbird ( 7 Years Ago )
Forum Post Check the camshaft timing. Low compression can result if the camshaft... By Hoosier Hurricane ( 7 Years Ago )
Forum Post Another good thing to get is a shop manual. It will take some more of... By charliemccraney ( 7 Years Ago )
Forum Post I realize this isn't your first rodeo, but did we get a warm & fuzzy... By Tedster ( 7 Years Ago )
Forum Post Ron, can you restate some basic info so we all start from the same... By Pete 55Tbird ( 7 Years Ago )
Forum Post Compression is at 65/70. New gas, ethanol free, from hanging temp... By 55F100RON ( 7 Years Ago )
Forum Post You never mentioned the color on the spark. Blue like thunder ore... By Robin272 ( 7 Years Ago )


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