I post other day, pickup stsrt hard for months when cold, an smell gas, but no see until lately, bad leak an shop Say rust in top an fuel pump tomma , if pump work, but no pressure when Cold, could rusted cracked fuel pump housing be causing it ? Or something else ?

Rosetta Stone please

X2

I think he is asking if a cracked or rusted fuel pump housing would cause it not to work. Something about no pressure when cold maybe?

Cracked possibly but wouldn't a guy see a leak ?? Rusted probably not since it is just on the outside.

Coonman is it electric or vacuum ?

I think electric? No idea ? It leaks only when run an after shut off till cold

Check for wiring. Is the vehicle carbureted or injected ?

Probably rusted lines on top of fuel pump housing. We had to take off the bed of my son’s truck, and had a heck of a time knocking the pump loose from the tank. It was rusted down pretty hard to the tank. 2003 Chevy 1500.

So it leaks when it's running ? Then there must be pressure if the engine runs. Maybe a gasket ??? I suppose there could be a crack that leaks when under pressure

Yes all rusted, on top an 2010 Colorado, try figgure out if cracked housing or on top or whatever an fuel pump ok. Would cause fuel pressure problems when cold? Or if different t problem, it worse the problem now, when starting or does it every time, unless warm, because more leaking, maybe I answering my question here, expensive for me

lol

Years ago it was possible that fuel pumps could leak internal to the tank. It's very unlikely today. If that housing was cracked you most likely have a heck of a fuel leak.
That vehicle has a separate computer just for running the fuel pump. If there's a problem with it, it won't be hard to figure it out, but you've got to have the equipment to do it.
I recommend you take it to someone that knows what they are doing. A hard start problem shouldn't be too hard to fix.
Joe

Just buy a new vehicle.

So a crack an or rusted out crack, could cause fuel pressure problems when cold?

It will cause problems all the time. Poor mileage,slow start, loss of power and if you are not careful a fire when the leaking gas ignites.

Sounds like the return line is leaking. Try this when truck is cold. Turn the key off and back on 3 times then start. On 1234 off, on 1234 off. on 1234 off, start.
When you first turn the key on, the pump only runs for a few seconds. By turning it on and off it will build more pressure and start easier.
The pump is in the fuel tank. In order to fix it you either drop the tank or take the box loose.
Get your self a mirror an a light and crawl under there and look at the top of the tank. Figure out what is going on before you burn it down.

There are metal tubes coming out of the fuel pump tank assembly mounted in the top of your fuel tank. One of those lines has rusted through and is leaking gas when the pump is running. This will cause hard starting, also will use more gas when you do get the engine running, and is a fire hazard. You will need to look at the top of the gas tank to see where it is leaking. I prefer to raise up the bed to do this. You will need to open the gas filler neck. Open the filler door and remove the filler cap and remove the 3 screws that fasten the filler neck to the bed. There are bolts that come up through the frame and screw into the crossmembers of the bed that will need to be removed. Usually there will be 6,8,or 10 of these bolts depending on how long the bed is. They will be very tight to break loose. Spray the threads with rust buster by sticking the spray tube in the end of the crossmember or in one of the other holes in the crossmember. Then you can unplug the wiring harness back by the license plate and the bed is loose. You will need to get several of your buddies to lift it or use some type of lift like a tractor with loader or cherry picker.
After the bed is removed, just turn the key on and the pump will cycle for about 3 seconds and you will see where the gas is leaking. I doubt you will find anything that can be repaired. Usually best to replace whole fuel pump assembly. Good Luck.

220 some more info would be helpful. make, model, year, mfg date, engine displacement.

I've seen lots of times guys cut a hole in the floor of the bed to access the pump, but probably not the best way if the gas is leaking up there..... Unless your full coverage insurance is up to date.

Maybe I should ask shop guy tomma, they won't I sure as against the shop or policy, I wish I could do it, I would take off an buy cheaper pump , the pumps they get are high. Quoted $560 plus tax, about, Chevy garage want $750 plus , I sure after pump in, things be ok, I don't think they take off box, 3 hour job , yes notice increase in gas for months, could smell gas but never see leak, didn't look right place, could this increase in fuel, somehow contaiment oil?

I replaced the fuel pump on my 06 Silverado 1500 this past spring. I didnt notice much in the way of hard starts, but I did have the gas smell which got me looking for a leak. When I looked underneath I could see the gas drip trail down the gas tank, since it's a plastic tank, I knew the tank wasn't rusted and leaking. I dropped the tank and the top housing of the fuel pump was rusted bad along with 1 of the nipples where the line connects was bad.

Hardest part was breaking the ring loose on top the fuel pump that locks it into the tank. I considered taking the bed off, but the bolts for my bed were blocked by the hitch in the back.( there was no way to get a socket and extension on the bolts and no room to get enough torque on a box end wrench.)

The only place on my silverado where a leak could really form was the fuel pump. Tank is plastic and the fuel lines that come off the pump were some kind of plastic. Fuel pump is metal and was corroded through or almost through.

Probly spent 2hrs to get the pump broke loose from the tank. Rest of the job probly took me right around that 3 hrs, and I'm not a mechanic, just a diyer. After market pump I used was around 300$.