Re: No gas getting to the cylinders

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Posted by Tim Daley(MI) on May 08, 2020 at 07:23:51 [URL] [DELETE] :

In Reply to: No gas getting to the cylinders posted by Mike Myers on May 07, 2020 at 19:00:16:

Welcome aboard Mike. First, model year is unimportant unless you are trying for an original restoration. What helps us to better help you is to tell us if you have the front mount or side mount distributor and if it is the OEM 6V/POS GRN electrical setup or a 12V switch over job. Have you a copy of "75 TIPS FOR N-OWNERS" by Bruce(VA)? It's in our HOW-TO's forum along with a ton of other useful self-help and DIY projects. Three things are need to start and run a tractor: Fuel, Spark, and Compression. The latter readings you stated are adequate so concentrate on the first two. Did you do the fuel flow test first before pulling the OEM carb? New carbs may look alike but the OEM was the Marvel-Schebler TSX-241 Model and they are no longer in business, so I doubt if you found an exact new one. New, aftermarket units are made in Cheena and don't assume anything is tested and tweaked (There's no QC) out of the box. If you want, send me your old unit and I will rebuild it. As the others said, fuel flow test needs to be performed. 3 screens in the fuel systems. Two are in the Sediment Bulb Assembly and one is in the fuel inlet brass elbow on the carb. Check and clean those first. Another culprit is a plugged gas tank vent located on the top dome of tank. You can't get to it unless you pull the hood and yank it off - a time consuming job. In my opinion, if you are going to go that far, may as well do it right and get the gas tank cleaned and possibly coated. Start with the basics; baby steps. Avoid the temptation to just start buying new parts and replacing until old ones are verified to be defective. All Ford components were designed to be rebuilt over and over. For any solution, you must perform true root cause problem solving method. Verify fuel flow passes the test. Next step will be the electrical system/spark. Get The Essential Manuals and copies of Bruce's 75 Tips and a copy of WIRING PICTOGRAMS by JMOR to download free.

Probable NO-GO fuel issue causes are: plugged vent, plugged screens, plugged sediment bulb, dirty gas tank, dirty carb, and more. There are three OEM screens in the fuel system. Two are on the Sediment Bulb Assembly; the 3rd is on the brass elbow inside the carb where the fuel line connects to. SEE PICTURES. I wouldn’t be shoving anything, wires especially, up into the sediment bulb assembly. You have a vertical fine mesh screen on the inlet port inside the tank that you can damage. Best solution is to remove the tank and thoroughly clean. Fuel Flow Test first: One pint in two minutes via drain plug and fuel line at inlet elbow.

FORD N-SERIES TRACTOR FUEL SYSTEM & POSSIBLE CAUSES OF NO FUEL:





The ESSENTIAL MANUALS are your friend. PM is so important to maintain any piece of machinery.

FORD 8N TRACTOR ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS:

Tim *PloughNman* Daley(MI)


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