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Is this the real issue?!?
#1
I need help so I dont spend any more money on this issue. Will my 71 Grandé 302 has been giving me issues with just shutting off. I would turn it on and it would stay on for a while then turn off like it didnt have gas. I would fire it back up fine and it would turn off faster and faster the more i fired it back up. I took of the fuel line that goes to the carb to see if it is pumping gas and it was but the gas was coming out rusty. So thinking it was a rust issue replaced the gas tank and found ALOT of rust in the tank and on the sending unit and also replaced the fuel filter. After this the car did stay on a little long but still ended up shutting back off the same way. This weekend I was planning on replacing the carberator and the fuel pump becuase someone from the forum told me i may have a issue in my pump with rust by the diaphram. BUT before i do all this is there any test I can do or any ideas people can tell me on other reasons why this might be happening before I spend the money on something that isnt the real issue!
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#2
Try a clear filter (temporary) so that you can see what it happening. You will be able to see if you have gas to the carb and you will be able to see if there is a rust issue. Are you sure it is gas related? You could have a coil problem as it warms up it shuts down.
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#3
Steven Harris;15246 Wrote:Try a clear filter (temporary) so that you can see what it happening. You will be able to see if you have gas to the carb and you will be able to see if there is a rust issue. Are you sure it is gas related? You could have a coil problem as it warms up it shuts down.

I really dont know thats why I was asking to see if poeple can give me different opinons on what the problem might be and how to check if to see if it is what they say. I know now i have gas to the carb becuase I diconnected the fuel line to the carb many times just to check.
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#4
I had an issue like yours years ago with a friends car and the rust trashed the holley carb. Car would die, then I would pull the bowls and clean out the carb and it would run again for a little bit then stall again, repeat process same result. Cleaned out the fuel tank, replaced the fuel pump and rebuilt the carb. Took care of the problem.
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#5
jiujitsuDave;15252 Wrote:I had an issue like yours years ago with a friends car and the rust trashed the holley carb. Car would die, then I would pull the bowls and clean out the carb and it would run again for a little bit then stall again, repeat process same result. Cleaned out the fuel tank, replaced the fuel pump and rebuilt the carb. Took care of the problem.

I was talking to chapa a while ago and he said he already did replace all that, except for the fuel lines...

I had a similar problem with a very very tired 351W that it overheated and shut himself down..

I didn´t care cause it was going to be rebuilt but, i´m thinking maybe Chapa´s problem can be something else than the Carb (NEW), Tank (New) and Fuel Pump (NEW TOO)...

Could it be some problem at the valves for example??




Damián Cool

[Image: 120x45bk1ani.gif]
Vote For 7173Mustangs.Com Every Day!
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#6
Even if it's all been replaced, I still think it most likely is rust. A little rust goes a long way in a carb.

[Image: 386_07_10_13_5_58_42.jpeg]
My Mustangs:
71 M-code Mach 1, Medium Blue/White Sport, 4R70W, 3L50, Factory Ram Air.
72 Q-code Mach 1, Pewter/Black Sport, 4-spd, 3L25.
65 Convertible, Britney Blue/White/White, more modified than original.
05 Convertible, Legend Lime/Tan/Tan, future classic??
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#7
Pull carb and dismantle and soak overnight in cleaner and rebuild, I would also change the fuel pump while you are at it, to make sure there is no debris trapped anywhere. That should solve your problems

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
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#8
URUGUAYAN_FASTBACK;15253 Wrote:
jiujitsuDave;15252 Wrote:I had an issue like yours years ago with a friends car and the rust trashed the holley carb. Car would die, then I would pull the bowls and clean out the carb and it would run again for a little bit then stall again, repeat process same result. Cleaned out the fuel tank, replaced the fuel pump and rebuilt the carb. Took care of the problem.

I was talking to chapa a while ago and he said he already did replace all that, except for the fuel lines...

I had a similar problem with a very very tired 351W that it overheated and shut himself down..

I didn´t care cause it was going to be rebuilt but, i´m thinking maybe Chapa´s problem can be something else than the Carb (NEW), Tank (New) and Fuel Pump (NEW TOO)...

Could it be some problem at the valves for example??





acually I haven't replaced the pump or the carb yet I was telling you that it was going to get replaced this weekend haha sorry for the misunderstanding but yea I didn't want to replace them if it didn't have to or they weren't the problem. Undecided

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#9
thundertc64;15256 Wrote:Pull carb and dismantle and soak overnight in cleaner and rebuild, I would also change the fuel pump while you are at it, to make sure there is no debris trapped anywhere. That should solve your problems

As don said too.. Maybe rúst went into the carb from the fuel line that was not replaced.. I suggested Chapa to do the test of disconecting the line at the pump and use a bottle with fuel instead of the tank and lines... He can do that but if he is capable to clean the carb by himself, that sure goes first...

Try that chapa and is you clean the carb and conect a bottle to the pump, the problem should be solved... Then clean somehow the fuellines and maybe use an extra line filter to be sure there's no mOre rúst going into the carb..

Chapa;15257 Wrote:
URUGUAYAN_FASTBACK;15253 Wrote:
jiujitsuDave;15252 Wrote:I had an issue like yours years ago with a friends car and the rust trashed the holley carb. Car would die, then I would pull the bowls and clean out the carb and it would run again for a little bit then stall again, repeat process same result. Cleaned out the fuel tank, replaced the fuel pump and rebuilt the carb. Took care of the problem.

I was talking to chapa a while ago and he said he already did replace all that, except for the fuel lines...

I had a similar problem with a very very tired 351W that it overheated and shut himself down..

I didn´t care cause it was going to be rebuilt but, i´m thinking maybe Chapa´s problem can be something else than the Carb (NEW), Tank (New) and Fuel Pump (NEW TOO)...

Could it be some problem at the valves for example??





acually I haven't replaced the pump or the carb yet I was telling you that it was going to get replaced this weekend haha sorry for the misunderstanding but yea I didn't want to replace them if it didn't have to or they weren't the problem. Undecided

Ohhh! Sorry chapa!! It is my bad english!!

Then, try cleaning the carb and if you can, replace the pump... Then conect it to a bottle to test and if it works, concentrate on cleaning the línes and the tank!! Even easier my friend!! Smile




Damián Cool

[Image: 120x45bk1ani.gif]
Vote For 7173Mustangs.Com Every Day!
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#10
I would start with the easiest thing to check.....put a clear inline fuel filter in and start with that at least you will be able to see if you're still getting any rust.

BTW were all the lines changed?

Now just thinking off the top of my head.....I had a problem where the car would start up....run and I'd be fidling with something and it would die....turned out I had a floating ground..broken wire and every time i moved something or I went over a bump that would be enough for it to ground out and die.

Ken

[Image: 1_14_01_12_10_54_29.png]

Ken

73 Convertible 302-4v-3spd yellow /white int

08 Bullitt 4.6-5 spd black/black int


All I ask is a chance to prove that money can't make me happy
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