I'm hoping someone here can help me out. I was running my car for about 15 minutes and it sounded like it just ran out of gas. Replaced the fuel pump, igniters on the dizzy but still no gas? Need to get fuel into the carb. Not sure why I'm not getting any fuel. Need help!

David

 

Have you ensured the fuel supply line or intank pickup isn't plugged?

 

Are you getting fuel up at the engine?

 

Checked the fuel filter itself and it has gas in it. The fuel pump is brand new and tested in working order. I am not getting fuel to the carb. Any thoughts... relays?

 

If the pump is running, then the fuel-cut relay is working. How are you checking for fuel at the carb? Make sure the fuel lines are connected correctly at the carb. The return line has a bullet one-way restrictor in to. There is an arrow etched in it.

Take the input fuel line off the carb and the fuel line off at the pump that goes to the carb. Flow air through it at the carb end. If this is OK, then do the same for the tank and listen for air with the gas cap off.

 

I have an inline large glass filter in the hose going into the carb and usually it's full of fuel. But I don't see any gas inside it.

 

Sounds like you have an obstruction or issue with the pump. Just because a pump make noise, does not mean it's working. Do the check I have in my prevouis post and let us know the outcome.

Remove that glass filter. If you have to have one at the carb, use a metal one.

 

Here's another picture of the fuel line disconnected from the Gas Filter.

 

Anybody??? Gas Tank Issue?? Help!!

 

It's not clear what you've tested... it's much easier to help if you provide feed back. Is it correct that you've got the fuel pump running, the fuel line disconnected and there's no gas flowing? If so it sure seems like KC is spot on when he says that just because you hear the pump running doesn't mean it's working. Also that there might be an obstruction in the tank.

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Take the line off the output side of the fuel pump and see if you can blow low pressure air from the carb supply line. Put the fuel pump side in a bucket to catch anything that comes out. Five to ten PSI should work.

If this works, do the same with the fuel pump input line to tank and listen for bubbles in the tank. If this work, check the fuel pump itself. This is where you need to be very careful. I like to use two gas cans and two 6' long hoses, one in each can with the pump in the middle. See if it pumps fuel. Again be very careful because you will need to rig up the electrical. And make sure to get the polarity correct. Don't want to run the pump backwards. Gas and voltage don't mix. If you don't feel comfortable, don't oo the fuel pump test.

 

What he said

 

FEEDBACK: I've tested the fuel pump. It was replaced with a brand new Mazda Fuel Pump for the fb. Fuel Filter has been replaced as well with a new one. Would "priming" the carb by misting oil and gas down the carb while someone turns on the ignition? Thanks

 

The pump does not need to be primed. It is self priming.

Check the fuel lines.

 

So gas and a little oil down the carb might turn it over?

 

You've commented that you tested the pump, so fuel does indeed flow from the pump itself? If this is the case take the fuel line off at the carb, and turn the fuel pump on, is there any fuel coming out? Again there is no need to prime the carb. If the engine turns over and you have confirmed gas is getting to the carb, yet the car does not start, you most likely have something blocking the fuel in the carb. I've used starter fluid in a similar situation with my motorcycle to get the vacuum with the engine running off the starter fluid and it pulls the fuel in. However, to help you more, more details will need to be provided based on the suggested troubleshooting steps.

 

I originally used fuel hose clamps when I installed the new fuel filter and removed them when I was finished. I just removed the small fuel hose going from the gas tank to the "in" on the fuel filter and there is no gas coming out. Fuel Filter and pump are both "dry". Now what?

 

I originally used fuel line clamps when i installed the new fuel filter. I just removed the fuel hose going from the gas tank to the "in" side of the fuel filter. No fuel came out of the tank. The fuel filter and fuel pump are dry. Now what?

 

Please blow air into the tank from that line as was suggested.

I would also suggest you replace EVERY fuel line, one at a time. Over time, they can get brittle and clogged.

 

Fuel filter and fuel pump are dry? Do you have fuel in the tank?
The pump should be wet when you take it out of the tank if there is fuel in it.

 

external fuel pump on the 1st gens. if i read a previous post right, if disconnecting the line between the tank and filter then no, there will be no fuel coming out. remove the line from the pump, going up to the engine bay. run the pump and if no fuel, there's a blockage between the tank and pump. blowing air back thru the line towards the tank, u will hear bubbling in the tank provided it has fuel in it.

 

My bad, I haven't touched the fuel tank or pump on this car just yet and assumed it was in the tank. I could've sworn I saw a pump (maybe the signal lever?) in a tank I was considering purchasing as a backup.

 

there is a fuel level sender in the fuel tank. The pump is outside the tank.

 

Ok, there's no need to blow air from the fuel filter inlet back into the gas tank if I removed the fuel hose and nothing. Looks like it starts at the tank. Has anyone ever had their gas tank removed and professionally cleaned? And if so, will a good mechanic be able to do that? Not going to try it myself...

 

I've had a tank from a 1979 cleaned and resealed at a local radiator shop a couple of years ago. The gas in this one had turned to tar about 1/4 inch think. It was so thick I couldn't even scape it up. I had to remove the tank myself and take it to them. The shop made two cuts at 90 degrees to each other and folded it back. They then used MEK (Methyl Ethyl Ketone). They let it sit a week and then cleaned it out and resealed. Not sure what sealer they used but it was red. Since the 1979 doesn't have a drain plug they also brazed one in. They also validated that the pickup tube was clear. Cost $350 and was well worth it. I had to refurb the fuel level mechanism myself. Once it was clean (sand blasted) I validated the ohm values for empty, one half, and full. I then replaced ALL 6mm and 8mm rubber fuel lines with some nice Gates hose.

I would first remove the tank. Since this is a 1984, you can drain the tank via the plug on the bottom. Then remove the sending unit and inspect the tank to see if it just needs a light cleaning or a rehab.