Not a tight guide holding a valve open I suppose? Good luck!
I just looked at your FABO thread! Keep at it! It will all make sense when you find the problem!
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| 1972 Dodge Colt https://slantsix.org/forum/viewtopic.php?t=63924 |
Page 22 of 81 |
| Author: | Rick Covalt [ Sat Mar 26, 2022 8:54 am ] |
| Post subject: | Re: 1972 Dodge Colt |
Wow! Tell us more Stan. Did you lose compression? |
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| Author: | hyper_pak [ Sat Mar 26, 2022 10:04 am ] |
| Post subject: | Re: 1972 Dodge Colt |
I had #1 not firing, the header was cold. I went through a leakdown and thought the intake seat was bad or leaking. After removing the head, it held fluid all night, so that was not it. Going to put a couple of heads on today and see what I can find. I need to change this 650 carb I can't keep it from leaking. There was some fluid sitting in a couple of ports on tear down. |
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| Author: | Rick Covalt [ Sat Mar 26, 2022 12:14 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Not a tight guide holding a valve open I suppose? Good luck! I just looked at your FABO thread! Keep at it! It will all make sense when you find the problem!
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| Author: | terrylittlejohn [ Wed Mar 30, 2022 8:14 am ] |
| Post subject: | Re: 1972 Dodge Colt |
check for cracked or broken rings! |
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| Author: | hyper_pak [ Sat Apr 02, 2022 5:53 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Here is where I am tonight. Not at Mokan, this is a big disappointment for me. I ran a compression check today after putting everything back together. 165+ average on all 6 cylinders. Number 1 had the most pressure. I have a Chrysler electronic distributor in and hooked to the MSD. New wires, new pickup. Cranked it over a few times and it has a good spark. I have a rebuilt 68 340 AVS carb installed with new fuel lines. So tomorrow I will start it up again and see how it runs. I put 2 different heads on the block with the same leakdown numbers. Wish me luck. |
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| Author: | slantzilla [ Sat Apr 02, 2022 8:14 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Good luck Stan! |
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| Author: | Greg Ondayko [ Sun Apr 03, 2022 4:31 am ] |
| Post subject: | Re: 1972 Dodge Colt |
Do gettum Stan! Get that colt fired up! |
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| Author: | Dart270 [ Sun Apr 03, 2022 5:29 am ] |
| Post subject: | Re: 1972 Dodge Colt |
Best of luck, Stan. Sounds like it must be ignition, given the cranking psi numbers. Lou |
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| Author: | hyper_pak [ Mon Apr 04, 2022 6:27 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
After getting the AVS floats set and running the 8 gage alternator wire to the disconnect switch I fired the engine again. I was able to get the engine to idle. That was the good. Cylinder read ~ 140 degrees F with the IR meter. Cylinders 2 through 6 read ~ 250 degrees F. I swapped #1 and #6 plug wires and plugs to see if that was the problem. I could hold #1 in my hand, #6 was smoking hot. Same result. Since the engine was hot I pulled all the plugs and did a compression test. Zero on number 1, every other cylinder was ~ 165 PSI. So I have another head that I will start getting ready. |
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| Author: | Rick Covalt [ Tue Apr 05, 2022 3:10 am ] |
| Post subject: | Re: 1972 Dodge Colt |
That is very odd! And frustrating! Did you do another leak down on that cylinder? With no compression you should be able to tell where it is going. Seems like it has to be a valve hanging open to have zero compression. Good luck! |
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| Author: | Greg Ondayko [ Tue Apr 05, 2022 6:56 am ] |
| Post subject: | Re: 1972 Dodge Colt |
Hopefully Just a Bum valve issue on that head. Go gettum Stan! |
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| Author: | hyper_pak [ Fri Apr 08, 2022 6:11 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Here are a couple of videos. Tell me what you think. https://youtu.be/4GQ8xt1jzRk And then the crazy one. https://youtu.be/oXkEr14x6rE |
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| Author: | Greg Ondayko [ Fri Apr 08, 2022 7:13 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Cast Valve Cover is thicc and keeping one of the valve tips pushed down. Those Goofy ( in my opinion) Clifford AL Covers are heavier than the OE tin ones anyway, I think you can solve it with witness marks on the AL Cover and some clearancing (sp?) with a die grinder. On a tin one just some massaging with a ball peen hammer gets the job done. Post a picture of the inside of the Clifford cover ... let see if there is some protrusion down neat the rocker tips. What rockers / Rocker pads are you using? Greg |
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| Author: | slantzilla [ Fri Apr 08, 2022 7:53 pm ] |
| Post subject: | Re: 1972 Dodge Colt |
Glad you found it Stan!
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| Author: | Rob Simmons [ Sat Apr 09, 2022 4:44 am ] |
| Post subject: | Re: 1972 Dodge Colt |
Wow!  So glad you found it and it’s an easy fix! |
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