oh yeah po had by passed mechanical fuel pump i dont see any powere does it just work with the flow coming into it?

The mechanical pump, if not used for some time will rot inside making it useless for a pump. Sounds like the PO kept it for a fancy block of plate.

The mech pump runs of a cam and is purely... mechanical. No electricity required. A lever inside the pump moves a diaphragm back in forth and two one-way valves allow flow in only one direction... Towards the carbs. As mentioned earlier it takes a while to prime the system if it's run dry. The Mech pump sucks fuel so slowly it might take a minute and a half of cranking to get enough fuel to run the engine. Of course once the system is primed everything is normal when starting. Just bump the starter and it comes to life. All that really matters is that there is enough fuel in the float bowls. (duh) This is why I mentioned a shortcut to priming in the last message.

I think this was the answer you were looking for. Hope so.

Jim

Hey All,

i was driving today and car died, coasted to parking lot checked and had no gas in either fuel filters, pump sounded as its normal whinny self but no go juice, my question is do i need new electric fuel pump and do i need to drop tank and replace the fuel suction part thingy dont know what its called, have the manual for dropping tank need to replace over flow hoses found out hard way with premium email me at chicago240z@yahoo.com if you can help need to fix tomm. or next day dailey driver

I am afraid that just because the pump is still running , it isn't a for sure that it is still working. As Jim said you can try and blow air back through the line and see if it might clear some of the crud that may be clogging a filter or screen. It is not a fix but might get you home. Since this is a daily driver and if there has been no earlier problems along this line, and the case that the filter is empty I would say a new or newer pump is going to be the cure. Now I hope you are not just out of gas. Are you sure the fuel gage is correct? this has happened before. Gary

tank dropped now, total of 11 gallons of gas came out surprised at how clean tank is. Im having it cleaned out by a radiator shop and have a new holley blue pump and a regulator for 1-5 psi ,i had to go to truck shop to get correct venting size hoses napa,advanced auto do not carry them going to change out bushings today while im waiting surprised the sway bar is still there with how bad these bushings are disintigrated, im going to blow out hard lines with an air compressoralso thanks for the info hope this works

Let us know how it goes. For me, installing the tank in my 240 isn't much fun. Mine was painted nicely so no jack was involved. I had to to a funny jig with both knees propping one side and both hands pushing on the other. Once you are able to get one tank strap on you have 1/4 of the battle over. A helper helps.. Some extra hands to hold the filler neck or attach some hardware.

The main pain is getting the filler neck to slide over. One easy thing to do is use a hair dryer to warm the hard plastic. Start the dryer away from the tank and don't allow it to suck in any fimes or the sparks in the dryer's motor might ignite the fumes. You'll be surprised how much easier it is to insert/manipulate the filler neck once it is pliable. Don't heat it too much of course. Work quickly as the plastic cools quickly.

Be VERY easy on the steel vent tubes. Don't apply any side force to them because the solder joints can crack. (Ask me how I know these things )

Good to hear your tank was clean. Good luck

Jim