This Geo Metro 3 cyl engine cranks with spark, but won't start. I replaced the fuel pump, fuel filter and fuel pump relay. The fuel pump does not make a noise. What could it be?

"The fuel pump does not make a noise."

Is the Fuel Injection circuit fuse in tact? Any electrical short in any of the circuits connected to ECU ('brain') will cause the FI circuit to blow (At least this was the case with my '96).

-Mike

Did you check the compresion? No start is one of the first signs of low compresion.

"The fuel pump does not make a noise."

Is the Fuel Injection circuit fuse in tact? Any electrical short in any of the circuits connected to ECU ('brain') will cause the FI circuit to blow (At least this was the case with my '96).

-Mike Thanks Mike, my Metro has a carburator.

I'd imagine that if he removed the rear seat bottom and located the fuel pump electrical connector, that it would be easy to diagnose with a voltmeter. And in the case with yours blowing the fuse, simply disconnecting the pump connector would cease the fuse blowing thus pointing to a bad pump.

The pumps in these cars are not overbuilt and probably just marginal at best. It would not surprise me if his pump was shot.

DieInterim

This Geo Metro 3 cyl carburator engine cranks with spark, but won't start. I replaced the fuel pump, fuel filter and fuel pump relay. The fuel pump does not make a noise. What could it be?

Did you check the compresion? No start is one of the first signs of low compresion.
I have not checked for compression yet, cause I am trying to get gas to the engine first.

unless you changed it your car has a TB so pumping it while looking down inside will do nothing. when you first turn the key on the fuel pump will come on and run for about 2 seconds then shut off till you try and start the car. i would pull off the large of the 2 fuel lines and put it in a metal or glass jar and turn the key on and off a few times then go look in the jar and see if you have any fuel. don't crank it, just turn the key to on, leave it there for a few seconds then off

I didn t get it why do you need gas to check the compresion of the engine?
Actualy you need to disable the injector or fuel pump when you check the engine compresion.

Well I am confused now. You live in California yet you claim your Metro has a carburetor

Your suspicions are correct. It doesn't have a carb. Just because it looks like one, doesn't mean it is one. Carbs went away in north america in 88'(end of the MK1 model) Any 89+ metro uses a fuel injector. Carbs are still used worldwide where smog laws don't exist.

There's a 15a fuse in the black fusebox under your hood. It's on the drivers side next to the strut tower. Check that and see if it's blown. If it's not, have someone turn the key to the "on" position while listening to the relays(little black boxes). If one of them doesn't click, you've likely got a bad fuel pump relay.

On the topic of carbs.. Did that metro happen to have a JDM motor put in it? Those sometimes come shipped with a carb. In that case, you need to change over your intake system to one with a fuel injector. The ECU won't run a carb'd motor.