Super A wont start

scott#2 · Oct 11, 2009

Cleaned the whole fuel system, pretty nasty, rebuilt the zenith carb, all back together and wont start.

Tried a shot of starting fluid in the carb throat, no dice.

Got the compression guage out and no cylinders will go over 25 lbs. This thing was running and pretty good, last year.

Whats your mix and procedure for freeing stuck rings?

Jeff Z. · Oct 11, 2009

You can try ATF or spray PB Blaster in and keep adding. Most will get by the rings.
Open oil pan and let excess drain out.Add more every day. Do this for a week.
If you get it started the more you run the engine the better it will get as far as the rings unsticking.

Jeff Z. · Oct 11, 2009

Sea Foam might make a good soak also.

Jeff Z. · Oct 11, 2009

When it comes right down to it if you had the rings and gaskets you could have it running in one day. Cost may be a bit more but faster than soaking.

ScottyHOMeY · Oct 11, 2009

Kinda odd they'd all bind up that quick. Was that compression wet, dry or both? If both and it didn't change much between wet and dry, I'd check out the valves, but it would be odd for all of them to bind up at once, too.

Like Jeff, I'm a Seafoam fan but its pricey. I'd use the ATF, diesel, MMO or PBBlaster, whichever you like, first. If you can get it running, then's when I'd put the Seafoam to it, half a can in the crankcase and half in the gas. It's great stuff in my book.

scott#2 · Oct 11, 2009

Thanks for the reccomend on the soak, pulled the v/c off, found a bent push rod and 3 stuck valves and one partially stuck. To free them up, I tapped them down as far as they would go (one at a time), one came back on spring tension, the other 3 needed to be pushed up and down a few times to free them up, their still sticky so will stay on them with soaking.

What I did was tap one all the way down and slowly hand turn the engine and let the piston push it back up a little and repeated this until I could eventually pry them back up with a big screwdriver under the retainer, then repeat on the other ones. So far looks like I got lucky by getting to them before they were really rusted up, never had this happen before. It stays outside with the stack covered, guess weve had more humid days than usual around here. Moral of story, run your stuff every couple months.

Rings might still be stuck, need to do one thing at a time.

Jeff Z. · Oct 11, 2009

After reading your last post most of the problem sounds like valves.

scott#2 · Oct 11, 2009

Well, got it running, straightned the pushrod out, fired it up and it ran fine. Then it got a miss in it, shut it down, pulled the cover back off and #1 was stuck again, suspect #2 too. I pulled the wires while it was running and # 1 and 2 made no diff, now they do. Worked #1 over real good and it runs good and smooth now. Valves need adjusting, next time. Thanks for the help guys. Guess I ought tot go to the barn and fire the other one up and take it for a spin.

Scott#2

John G. Hasler · Oct 11, 2009

Are you getting any oil up top?

Super A wont start

scott#2

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Jeff Z.

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Jeff Z.

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Jeff Z.

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ScottyHOMeY

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scott#2

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Jeff Z.

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scott#2

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John G. Hasler

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