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07-04-2016, 02:37 PM
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#1 |
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Senior Member
Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,628
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What size jets ?
My '40 runs really rich as I have black soot coming out the tail pipe at start and I get poor gas mileage.
What size jets are recommended for 85hp - '40 and is there something else I can do to lean it out ? Thx....Mike |
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07-04-2016, 04:04 PM
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#2 |
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Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,985
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Re: What size jets ?
Could be just a bad Power valve.
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07-04-2016, 05:06 PM
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#3 | |
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Senior Member
Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 3,794
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Re: What size jets ?
Quote:
That would be the first thing I would check. Sal |
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07-04-2016, 07:01 PM
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#4 |
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Senior Member
Join Date: May 2010
Location: Oshkosh, Wi
Posts: 4,600
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Re: What size jets ?
Should be around 51 main jets.
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07-04-2016, 07:08 PM
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#5 |
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Senior Member
Join Date: May 2010
Location: Gardiner Me.
Posts: 4,200
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Re: What size jets ?
51 jets, but I think you'll find the power valve is carput. Walt
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07-05-2016, 08:25 AM
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#6 |
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Senior Member
Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,628
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Re: What size jets ?
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Thx....Mike |
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07-05-2016, 08:50 AM
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#7 |
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Senior Member
Join Date: Jun 2013
Location: Marana Arizona
Posts: 1,829
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Re: What size jets ?
Check with CharlieNY on this site. Has machined PV's that's seat properly.
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07-05-2016, 12:03 PM
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#8 |
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Senior Member
Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,628
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Re: What size jets ?
Thx Chap....
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07-05-2016, 12:07 PM
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#9 |
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Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 9,088
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Re: What size jets ?
Type this into google:
running rich site:www.fordbarn.com Lots of posts here for 94s running rich. I have typed out the long list of things that can cause it many many times. Once only recently. This was it: https://www.fordbarn.com/forum/showthread.php?t=197943 Lots of things to check before changing jets. Mart. |
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07-05-2016, 01:03 PM
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#10 |
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Senior Member
Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,628
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Re: What size jets ?
Thx Mart
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07-07-2016, 09:01 AM
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#11 |
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Member
Join Date: May 2011
Posts: 99
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Re: What size jets ?
Yeah, you are at or close to sea level, so #51 jets should be just right for you altitude. Must be something else causing rich condition.
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07-07-2016, 01:52 PM
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#12 |
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BANNED
Join Date: Jun 2012
Location: Long Island,NY
Posts: 1,568
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Re: What size jets ?
You might try a company called Renners Corner. They only advertise '28 to '34 but they might be able to help. All the jet's that I had purchased before Renners were JUNK. If you check them with a pin gauge they weren't even close. Renners flow tests every jet and gives you a paper showing the results. You can't ask for better service.
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07-08-2016, 01:52 AM
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#13 |
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Senior Member
Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,628
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Re: What size jets ?
Thx woodie I'll give them a try along with new power valve.
Mike |
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