2006-12-10 02:19:48 · 7 answers · asked by richard p 1 in Cars & Transportation ➔ Maintenance & Repairs
Cranking the engine with the high voltage coil wire grounded and of course the fuel line pointed into a can is one test. It should come spitting out quite gingerly, as the desired pressure is usually 7-10 lbs psi. Also check the crankcase oil (via dipstick or oil change) and look for petrol in the lubricating oil. A higher reading on the dipstick along with a lower viscosity (thickness) of the crankcase oil (accompanied by a strong petrol odor) would signal a broken diaphragm in the pump.
2006-12-10 02:32:23 · answer #1 · answered by Anonymous · 1⤊ 0⤋
are you sure you have a mechanical pump, most cars from 1993 onward have high pressure electric pumps to work the fuel injection. If you do have a mechanical pump disconnect the pipe on the outlet side (the one going to the carb) and have some one spin the engine over for you, you should see a jetty of fuel spurt out, or if the pump is easy to get to undo the two retainer nut and operate the spring lever by hand, again you should see fuel coming out
2006-12-10 04:14:48 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Im not sure where you live or what the make and model of the vehicle is but mechanical fuel pumps are a little old fashioned however the correct way to test them is:
1. remove the fuel pump from the vehicle
2. connect a vacum gauge to the side which comes from the tank and work the pump in the manner that the camshaft would several times, this will give you a vacum reading
3. disconnect the vacum gauge and then connect a pressure gauge to the output side of the pumo and repeat the process
4. use a haynes manual to check that the vacum and pressure readings are within the manufacturers specifications
2006-12-10 06:48:05 · answer #3 · answered by gav552001 5 · 0⤊ 1⤋
I will agree with Mark. Disconnect the fuel line and turn the engine over. If fuel comes out, you are getting fuel to the carb. Are you sure that you have a fuel problem? If you are having problems with the car, spray starter fluid in the carb. If your problem goes away, then you have a fuel problem. Now, if it's running rough, it may be a vaccum leak. In this case, I usually spray WD-40 or some other generic oil based spray around the intake, carb, and lines. You'll find your vaccum leak..or bad gasket, when the car smooths out. I really need more info to help further. Good luck.
2006-12-10 02:30:30 · answer #4 · answered by jeff s 5 · 0⤊ 0⤋
the one that I know is to disconnect fuel line from carby and have someone turn the ignition so the engine turns just a few times and you should see fuel come out from the hose
2006-12-10 02:22:34 · answer #5 · answered by Anonymous · 0⤊ 0⤋
by you having a mechanical pump,then you got a carb.a float in the carb,determines how much the carb. fills up.its either flooding or starving for fuel.try adjusting the float and also check the needle seat,for dirt and wear.
2006-12-10 02:26:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Turning the engine over with the Distributor lead detached
2006-12-10 02:21:46 · answer #7 · answered by Sir Sidney Snot 6 · 0⤊ 0⤋