My car wont start, It ran when i bought it but won't start Options

[turnaround89]

Little background first. Bought the car about a month ago and drove it around the neighborhood for a little while since it wasnt insured, never out on actual roads with other drivers. I got the insurance on the car and took it out for its first real drive. Drove the car for about 30 min and stopped at the bank to make a deposit. When i went back out the car would not start, couldn't even jump start the car. So i had to have it towed home, the drive cost me 50 dollars.

Well, i get the car back to the garage and start tearing into it, thinking it might be the starter, well i can't change the starter until the engine comes out(unless someone can help me there) but the starter seems fine, because i replaced the battery and the starter had lots more power. So new battery didn't make the car fire up, only the starter would crank the car, but no actual running engine. Replaced the spark plugs(they were horrible, gaped correctly) didn't do a thing. The starter cranks the engine but it will not fire up. I changed the fuel filter(and some of the fuel lines because they were horrible) today and that didn't help either. The old filter was pretty nasty. Hooked the fuel pump back up and the car still won't fire, starter cranks, but the engine won't turn over and start. I have ordered a new coil and spark plug wires. I had a friend with me and he watched the spark come through the wires and said it was really weak. However, if this doesn't solve my starting problem, what else could there be?

My dad says to check the timing and possibly the fuel pump might not even be working. The car ran two weeks ago, is it possible the fuel pump went out?

Oh yea, the car originally came with the 2.0L but the PO sold it and put a 1.8L carbed engine in. I can get more info about the engine if it helps.

Thanks everybody. Here are some pictures of the car, i am hoping for a 916 clone. I need the rear bumper and thats it(unless i want a steel roof, which i don't)

(IMG:http://photos-g.ak.facebook.com/photos-ak-sf2p/v307/98/57/507290528/n507290528_3615990_1068.jpg)
(IMG:http://photos-g.ak.facebook.com/photos-ak-sf2p/v307/98/57/507290528/n507290528_3615998_4055.jpg)
(IMG:http://photos-b.ak.facebook.com/photos-ak-sf2p/v307/98/57/507290528/n507290528_3616001_4924.jpg)

[type47]

i disagree with the hearing the pump run for 3 sec when you turn on the ignition key. that would happen if you have a d-jet and you posted you have a 1.8 with a carb.
i agree with the post about air-fuel-spark. fuel and spark are "easy" to verify; pull a plug wire and take a spare plug and put it in the plug wire (no need to remove the plug from the head). being careful that it is a high tension wire, ground the plug threads and crank the engine and look for/listen for spark. put a fuel pressure gauge (yours will probably be low pressure ~5psi (?) since it's carbed) in line with the fuel line. crank engine and look for pressure reading.
once you find the culprit, then there is another whole list of possible faults (more than are listed above!!!!)