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New/Repro YF carburetor for the 300 six

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Rembrant

Re: New/Repro YF carburetor for the 300 six

Ford F834 wrote

And the desirable non-EGR spacer 🤩

Jon. Seems all of the later Canadian trucks had this spacer. I’ve looked at 80-81 trucks with 300 and EGR, but every time I see an 85-86 they are Non-EGR. Interesting. I’m not sure when the change took place, but the later trucks seem to all be like this.

1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995

Gary Lewis

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Gary Lewis

And, it has the unusual Hi Output heater. Didn't notice that at first.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

Rembrant

Re: New/Repro YF carburetor for the 300 six

Gary Lewis wrote

And, it has the unusual Hi Output heater. Didn't notice that at first.

Gary, they seem to be somewhat common up here. I’ve seen quite a few of them lately. This truck was originally sold out west north of Montana, so if there was anywhere that a HO heater was actually required, that would be it lol.

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Ford F834

I received a message from the seller that I will be refunded the full purchase price (shipping was “free”). No return required. They simply asked for a photo of the item for them to submit to the factory to be able to process their own claim with the manufacturer.

Soooo, I am back to square 1 to get a working carburetor. I also have nothing to loose if I want to open up the ECCPP unit and see if I find anything obviously amiss inside. I will say that my experience with the seller was positive in spite of the issue(s) with the product. It’s not out of the question to order another unit in case I just got a bad one, but I intend to try putting a kit in one of my OEM carburetors first. I need this truck to run right ASAP.

SHORT BED 4-DOOR DIESEL: 1986 F350 4x4 under construction-- 7.3 IDIT ZF5+GVOD

STRAIGHT SIX 4X4: 1981 F150 2wd to 4x4-- 300 I6 close ratio diesel T19, hydroboost brakes, Saginaw steering

BIG F: 1995 F-Superduty under construction— converting to 6.9L IDI diesel ZF5+DNE2

Gary Lewis

Re: New/Repro YF carburetor for the 300 six

Administrator

I'd open it and the OEM one up, side by side, and see what is different. You may find the accelerator pump blown, which will cause an engine to run very rich.

Gary, AKA "Gary fellow": Profile

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

Thank you. I will have a look and see what I find. I am still so baffled how it could run well one day and not want to start the next. Do you think carburetor cleaner could have destroyed the accelerator pump?

Gary Lewis

Re: New/Repro YF carburetor for the 300 six

Administrator

Yes, I think it could. So when you pull it down check that out closely.

Gary, AKA "Gary fellow": Profile

1986F150Six

Re: New/Repro YF carburetor for the 300 six

Administrator

https://www.bing.com/videos/search?q=Carter+YF+accelerator+pump+diaphram&refig=ec62796aebe0436f88444abad3d6ace6&sp=-1&pq=carter+yf+accelerator+pump+diaphram&sc=1-35&qs=n&sk=&cvid=ec62796aebe0436f88444abad3d6ace6&ru=%2fsearch%3fq%3dCarter%2bYF%2baccelerator%2bpump%2bdiaphram%26form%3dANNTH1%26refig%3dec62796aebe0436f88444abad3d6ace6%26sp%3d-1%26pq%3dcarter%2byf%2baccelerator%2bpump%2bdiaphram%26sc%3d1-35%26qs%3dn%26sk%3d%26cvid%3dec62796aebe0436f88444abad3d6ace6&view=detail&mmscn=vwrc&mid=3CFC692A63EA0413A9293CFC692A63EA0413A929&FORM=WRVORC

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

Thank you David! That looks like the type of pump I remember seeing in our era of Carter YF. If the reproduction unit is the same, I should be able to inspect the diaphragm fairly easily. 🙂

1986F150Six

Re: New/Repro YF carburetor for the 300 six

Administrator

ArdWrknTrk

Re: New/Repro YF carburetor for the 300 six

Administrator

Mike's carb parts is a great resource for all of us (except EFI, and that's only 302 in '85-)

We should definitely add them to the vendor list. 💡

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Gary Lewis

Re: New/Repro YF carburetor for the 300 six

Administrator

ArdWrknTrk wrote

Mike's carb parts is a great resource for all of us (except EFI, and that's only 302 in '85-)

We should definitely add them to the vendor list. 💡

Done. With some embellishments.

Gary, AKA "Gary fellow": Profile

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Gary Lewis

Gary, you’re GOOD!!! And I am both happy and embarrassed at the same time. The accelerator pump isn’t as easy to get out as the one shown in the video, but once I got to it there were obvious cracks in the rubber. I destroyed it with carb cleaner trying to clear a port that didn’t exist... 😖.

I took the accelerator pump out of the rebuild kit that I bought to refurbish my OEM unit and it fit the ECCPP reproduction. I reassembled it and put it back in the truck. The truck starts on the first spin and holds a smooth 650 rpm idle. I’m not quite sure how to level with the seller at this point, but the new pump fixed the carburetor which is very good news for me!

ArdWrknTrk

Re: New/Repro YF carburetor for the 300 six

Administrator

Wow.

That's quite surprising Jonathan.
I wouldn't have thought carb cleaner would eat that diaphragm.

Maybe it was air pressure?

But I'm glad you found the cause.... and a solution!

If it were me, I'd probably eat humble pie and decline the refund when it popped up in my PayPal.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Rembrant

Re: New/Repro YF carburetor for the 300 six

In reply to this post by Ford F834

Ford F834 wrote

Gary, you’re GOOD!!! And I am both happy and embarrassed at the same time.

This is excellent news! I want to try one of these carbs soon. I just picked up a set of 300 engine mounts yesterday so I can install the engine in the frame.

Question Jon:

Are you running rubber fuel line all the way from the pump to the carb with an inline filter? I was wanting to make a new hard line but I don't know what the flares and fittings are. I guess it would be a whole lot easier to just run rubber hose.

Gary Lewis

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Ford F834

I'm glad you found it, that the stock parts fit, and the engine is running well.

And I'm with Jim - tell them you found the problem and decline the refund.

I'm glad we are back to probably having a good, cheap source for carbs.

Gary, AKA "Gary fellow": Profile

FuzzFace2

Re: New/Repro YF carburetor for the 300 six

In reply to this post by Rembrant

Rembrant wrote

Ford F834 wrote

Gary, you’re GOOD!!! And I am both happy and embarrassed at the same time.

This is excellent news! I want to try one of these carbs soon. I just picked up a set of 300 engine mounts yesterday so I can install the engine in the frame.

Question Jon:

Are you running rubber fuel line all the way from the pump to the carb with an inline filter? I was wanting to make a new hard line but I don't know what the flares and fittings are. I guess it would be a whole lot easier to just run rubber hose.

Cory, my 81 had hard line from pump to carb with a screw in filter from the factory.
Someone at one point cut the hard line and added the extra filter.
I don't have a good picture of the motor now but I only have the screw in filter and use rubber hose where the add on filter was.

Dave ----

Dave G.
81 F100 flare side 300 six / AA OD / NP435 / 2.75 gear
http://cars.grantskingdom1.com/index.php/1980-Ford-F100?page=1
81 F100 style side 300 six/SROD parts truck -RIP
http://cars.grantskingdom1.com/index.php/1981-Ford-F100

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Gary Lewis

Gentlemen, I didn’t doubt whether to proceed paying for this carburetor, but rather how to do it. I received a message that my bank card has been credited. If I can’t find a way to un-do this, I will message the seller about how to correct the mistake.

Cory, I really think a piece of hard line is needed. My original was leaky and I couldn’t get it tight, so I bought a piece of straight flare fitted fuel line at Autozone. I bent it myself and almost kinked it because I couldn’t find my tube bender. It isn’t the prettiest, but it works. It would have been much better if I had my bender. I threaded a hose barb at the far end, and used a piece of soft line and inline filter just in front of the carb.

ArdWrknTrk

Re: New/Repro YF carburetor for the 300 six

Administrator

This post was updated on .

Good job Jonathan!
Working with what you've got.

This makes me think how easy it may be to solder or braze to this nickel/copper brake line I have.
(Not that tiny 3/16 is enough for fuel, but that you can buy it by the foot and I see it listed to at least 1/2OD)

It's easy to form without collapsing, and eliminating threaded or compression joints is always a plus.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Ford F834

Re: New/Repro YF carburetor for the 300 six

Administrator

In reply to this post by Ford F834

Today I got squared up with the seller regarding the inappropriate refund... and the carburetor continues to run very well. Actually better than it did at first.

I am guessing that months of driving around with a failing carb may have carboned things up, which is getting cleared out, or the carb itself is smoothing after some use. The high rpm range seems like it might be slightly weak, but overall I’ve never had this truck run this smooth. It’s great. I might bump the timing back up just a bit, as it’s not kicking back or pinging in the slightest. I might get away with a bit more advance. I am very happy with it, though, and so glad I didn’t just return it and write it off as junk! It’s not... my straight six has never sounded so good. 🙂

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