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Posted By Discussion Topic: 36 coupe ken ct -- page: 1 2     ken ct. 05-07-2018 @ 7:59 AM reply profile send p.m. Senior Posts: 1513 Joined: Jan 2010 36 stock coupe . Is there a sock or filter of some sort on the pick up end that's in the tank.Is the access port uncovered when the rumble seat (bottom)is removed. How does it come up?? Suspecting a clogged inlet tube and varnish in tank from sitting a few yrs with gas in it. Got a gal of denatured alchol in it now with fresh gas but running great 1 minute and cr*ppy the next. ????? HELP. 2 fresh pumps on it and they pump fine. Its NOT a pump problem. Ken ct. TomO 05-08-2018 @ 7:45 AM reply profile send p.m. Senior Posts: 7250 Joined: Oct 2009 Ken, try blowing air into the tank while you listen at the inlet pipe. If pickup is clear, you will hear the air. The line from the tank to the firewall could be plugged also. They rust on the inside and the rust plugs the line. Air pressure can be a temporary fix for this. Sorry I cany help you on the access panel. Tom fordv8j 05-08-2018 @ 8:15 AM reply profile send p.m. New Member Posts: 176 Joined: Jan 2015 on my 38 conv. coupe, I can get to the cover with the rumble lid blocked partly open, and you remove the bottom by picking up the front of it, it sets on two pins, your 36 may be different.... ken ct. 05-08-2018 @ 8:33 AM reply profile send p.m. Senior Posts: 1513 Joined: Jan 2010 Ive done that tom,tought to blow through at first then started gurggiling and ran better for a while. I have a copper gasline from tank to carb,no problems in 25 yrs with it. Its got to be varnished up or partially plugged. It does run when the inline glass tube filter is at least 1/2 ful then slowly almost nothing in it. Is there a sock or filter screen or something on the tank end of the pickup ??? ken ct. Could a like a speedometer long cable be run through from 1 end to the other. ( or thin wire cable) ?? Thank both of you for the help. LarryK 05-08-2018 @ 6:23 PM reply profile send p.m. New Member Posts: 105 Joined: Aug 2012 Ken, Did you check the flex hose at the inlet to the fuel pump? If it is old, it could be deteriorated and partially plugged from exposure to ethanol gas. Larry kubes40 05-08-2018 @ 6:47 PM reply profile send p.m. Senior Posts: 3395 Joined: Oct 2009 Who rebuilt the pump? Are you certain it's operating correctly? There is no filter in the tank. Mike "Kube" Kubarth TomO 05-09-2018 @ 8:48 AM reply profile send p.m. Senior Posts: 7250 Joined: Oct 2009 Ken, lets start from the beginning. You say the fuel pumps pump fine and the car runs poorly. You blew air through the line and heard the air in the tank, so your line was open for a period of time. Did you do a fuel delivery test? You should do this to make sure the problem is fuel starvation. If it is fuel starvation, disconnect the fuel line at the fuel pump and connect a temporary line the fuel pump and repeat the test. If the pump passes the test, repeat with the flex line in place and the tank line disconnected. If it passes the test, disconnect the fuel lie at the tank and connect a rubber gas line to the end of the fuel line. Dip the hose end in a can of gas and repeat the fuel delivery test. If it passes the test, the problem is in the tank and you will have to see inside in order to solve the problem. Home Depot rents inspection cameras and you can feed the fiber optic cable through the filler pipe to see what is blocking the pickup. If it is not a fuel delivery problem, check out your ignition system. I am against using a copper fuel line, because they can work harden and crack. I also do not like inline fuel filters because like electric fuel pumps, they seem to cause as many problems as they fix. I rely on the fuel pump screen to catch the debris and the sediment bowl to catch the finer particles. Tom kubes40 05-09-2018 @ 3:41 PM reply profile send p.m. Senior Posts: 3395 Joined: Oct 2009 Tom, I'm certain you can appreciate this... I once had a '40 that would idle seemingly "all day". Rev it up and it would stammer. Long story - short... it turned out to be a floating piece of debris in the tank that got stuck on the pickup tube (end). It looked a bit like plastic wrap but wasn't of course. At idle, the debris would "float away" from the pickup tube. When the engine demanded more fuel, it would get sucked down over the end of the tube and cause a starving situation. I found this pretty much the way your advice dictates - basically, the process of elimination. That was one of the more frustrating dilemmas I've ever encountered on one of these old Fords. Mike "Kube" Kubarth TomO 05-10-2018 @ 6:34 AM reply profile send p.m. Senior Posts: 7250 Joined: Oct 2009 Mike, I had the same problem with debris in the tank on a 41 Plymouth. Someone decided to steal the owners gas cap and replace it with a rag. The owner (a 16 year old) did not notice the rag was in there and drove the car until it needed another $1 of gas (this was in 1950) by this time the rag had fallen into the tank. Then he bought a new gas cap. The rag floated around and would make the car starve for fuel at the most inconvenient times. Sometimes it would be on a turn and other times it would be when starting from a stop light. After 2 months of trouble shooting I sought guidance from my uncle about how to trouble shoot the problem. We did some real stupid things in the process, like take the hood off so we could feed the carburetor from a can of gas while driving around with a friend sitting on the fender to hold the can. My uncle blew a gasket when he heard about that. We found the rag when we followed my uncle's advice and removed the sending unit to look in the tank. Sometimes when I look back at my teen years, I am surprised that I lived to be an adult. Tom keith oh 05-10-2018 @ 12:41 PM reply profile send p.m. New Member Posts: 116 Joined: May 2010 Ken, you being a carburator, fuel pump rebuilder , must know your ford was manufactured with a copper coated steel fuel line not a plain copper line. I think your 36 had a vent line feeding air to the fuel tank that may be stopped up by a spider or mud dobber bee. Sometimes the simplest things cause the most complicated seeming problems.

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