Won't start I have a vw fox 87, Has spark, new cap rotor. won't start

change distributor cap and rotor button sounds like it could be drawing moisture in the cap or could be maf sencor

seems fuel related--pump and pressure regulator may be failing--a pressure test for residual fuel is needed. Go to an honest, independent or specialist. Injector driver could be going bad. It\'s in the computer. Get a obd 1 scan tool on it to read data as well as any codes

spak plugs,cap, rotor,starter,

Do the RPMs raise?

yes it could,, if you don't have the correct spark,, the firing would be weaker also, check the wires themselves to the plugs, and also the rotor , just because the cap looks brand new doesn't mean that its not arching inside the cap,, allowing the contact to get a reduced spark, if you replaced the coil, then its after that in the electrical circuit,, which brings you back to the cap, rotor, and wires. normally 3 wires won't go bad all at once unless there is a heat problem where the wires are routed, so I would just replace the cap and rotor, and see how it runs after that .

you said you repl dist cap that means you don't have a crank sensor you have electronic ing module. remove your elec ing module have it tested most auto parts stores could test your module, or check your coil at the neg terminal. should have power. if not you lost your primary volt from your batt.your secondary power is coming from your electronic ing module from the module to the pos terminal on the coil, when the eng cranks,from the coil to the dist cap , from the dist cap center to the rotor then out to the plugs,this all happen pervided the timing belt or timing chain is ok. the cumbustion chainber needs 3 things , thats fuel, air, and spark.

Could be as simple as a new rotor and distributer cap. As the rotor and contacts inside the cap wear, it will take more and more revolutions to get it to catch.

Check ground wire from negative battery terminal to transmission housing. If wire is broken you probably fried your computer and hall sensor

I have an 87 fox that won't start. Got good spark, so it must be fuel. The car wants to start but no fuel. I understand that a 87 Fox has 2 fuel pumps. One for the top of the tank and one for the bottom. I know the bottom one died years ago but now I believe the top one has gone. Where can I find it on the car and how can I check. Or do you think it may be something else?
Thanks,

Your battery could have a dead cell and not be giving a full 12 volts to your engine electrical system.
Hope this helps!