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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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 Posted: Sun May 20, 2018 9:04 pm Post subject: New build 1641 3&1 not firing |
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| Hi have a 1641 new build w110 cam 040 mofoco heads. I have spark at the end of the wires. New plugs, also swapped plugs w a cylinder that had a hot exhaust pipe. |
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TomWesty
Samba Member
Joined: November 23, 2007
Posts: 3482
Location: Wyoming,USA
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| Posted: Sun May 20, 2018 9:08 pm Post subject: Re: New build 1641 3&1 not firing |
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What induction do you have, and do you have compression on those cylinders?
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Sun May 20, 2018 9:25 pm Post subject: Re: New build 1641 3&1 not firing |
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| It has brand new dual kadron set up from the kaddie shack. I have to barrow a compression tester |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16961
Location: San Diego, California
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| Posted: Sun May 20, 2018 9:32 pm Post subject: Re: New build 1641 3&1 not firing |
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Go back and check your valve adjustment again. Do all the adjuster screws look about even on the nut/threads ?
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Sun May 20, 2018 9:38 pm Post subject: Re: New build 1641 3&1 not firing |
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| I checked 3&4 and they were correct. |
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Sun May 20, 2018 9:42 pm Post subject: Re: New build 1641 3&1 not firing |
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| Had to go to work didn’t have time to check 1&2. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
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| Posted: Sun May 20, 2018 10:05 pm Post subject: Re: New build 1641 3&1 not firing |
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| Swap the spark plug wires on #1 and #3 and see what that does. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51127
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Sun May 20, 2018 10:27 pm Post subject: Re: New build 1641 3&1 not firing |
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Kadrons won't idle on 4 cylinders unless you have a balance pipe between the manifolds, ain't aftermarket stuff fun? 
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Tcash
Samba Member
Joined: July 20, 2011
Posts: 12844
Location: San Jose, California, USA
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| Posted: Sun May 20, 2018 10:58 pm Post subject: Re: New build 1641 3&1 not firing |
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Switch the plug wires as suggested.
Here is a vid on the Kadron's
Link
Good luck
Tcash |
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TomWesty
Samba Member
Joined: November 23, 2007
Posts: 3482
Location: Wyoming,USA
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| Posted: Sun May 20, 2018 11:17 pm Post subject: Re: New build 1641 3&1 not firing |
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| busdaddy wrote: |
| Kadrons won't idle on 4 cylinders unless you have a balance pipe between the manifolds, ain't aftermarket stuff fun? |
Jeff offers good support in my experience. Pretty straight forward carbs that are easy to make jet changes to. I haven’t found mine to be any more cantankerous than a 34 PICT 3.
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If you haven't bled on them, you haven't worked on them.
Visit: www.tomcoryell.com and check out my music! |
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Mon May 21, 2018 12:27 am Post subject: Re: New build 1641 3&1 not firing |
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| I did swap the plug wires at the cap. Just checked lash on 1&2 they are good. I have a feeling I may not have done the cylinder shim spacing correctly the compression test tomorrow will show what’s up. It’s the only thing I can think of. |
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Abscate
Samba Member
Joined: October 05, 2014
Posts: 22641
Location: NYC/Upstate/ROW
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| Posted: Mon May 21, 2018 4:01 am Post subject: Re: New build 1641 3&1 not firing |
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| TomWesty wrote: |
| busdaddy wrote: |
| Kadrons won't idle on 4 cylinders unless you have a balance pipe between the manifolds, ain't aftermarket stuff fun? |
Jeff offers good support in my experience. Pretty straight forward carbs that are easy to make jet changes to. I haven’t found mine to be any more cantankerous than a 34 PICT 3. |
For a device that operates on pressure differences, That’s a low bar.
I kill myself, sometimes.
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Zed999
Samba Member
Joined: March 04, 2018
Posts: 1244
Location: UK
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| Posted: Mon May 21, 2018 4:09 am Post subject: Re: New build 1641 3&1 not firing |
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| busdaddy wrote: |
| Kadrons won't idle on 4 cylinders unless you have a balance pipe between the manifolds, ain't aftermarket stuff fun? |
This. Single barrel carbs need a balance pipe on a flat 4 engine. The more cam the greater the need. It's the firing order/valve timing, the second cylinder on each side sucks in exhaust from the first so 3 and 1 don't fire. |
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Mon May 21, 2018 4:23 am Post subject: Re: New build 1641 3&1 not firing |
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| Just did compression test 2&4 @ 115 lbs 1&3 @ 108 lbs |
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Tcash
Samba Member
Joined: July 20, 2011
Posts: 12844
Location: San Jose, California, USA
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| Posted: Mon May 21, 2018 5:44 am Post subject: Re: New build 1641 3&1 not firing |
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| newt374 wrote: |
| Just did compression test 2&4 @ 115 lbs 1&3 @ 108 lbs |
1&3 should fire with 108 and you can expect those numbers to come up as the rings break in. |
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newt374
Samba Member
Joined: January 13, 2008
Posts: 13
Location: Rochester, NY
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| Posted: Tue May 22, 2018 1:23 am Post subject: Re: New build 1641 3&1 not firing |
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| I’m going to get some hose barbs to hook the vacuum ports together on the intake manifolds. |
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