2002 chevy express 3500 turns over but wont start, replaced fuel pump, fuel filter. Motor is Getting fire but will not crank.

• Thump the fuel tank while some one cranks it . Fuel pump I'm guessing

2 of them........First Fuel Filter

One fuel filter is in the fuel pump of the Express Chevy 3500, which is used to push fuel or gasoline through the fuel line. The fuel pump is inside the gas tank. This fuel filter is a mesh or screen that prevents large foreign particles for entering the fuel pump. Access to the fuel filter is obtained by removing the fuel tank and then the fuel pump from the fuel tank.

Second Fuel Filter Location

The second fuel filter is within the fuel line itself. After the fuel pumps extracts fuel from the gasoline tank and into the fuel line, fuel flows through the line and through another filter on the driver's side of the Express Chevy 3500 under the front wheel suspension. This fuel filter cleans the small particles that escaped from the fuel tank.

Fuel Filter Types

The year of your Chevy Express 3500 determines what type of fuel filter is installed on the van. The fuel tank filter is always mesh or screen, but the fuel line filter can be of three different types. Two types are snap-on filters, while one type has clip-on ends.

Check spark plugs, leads, distributor cap & rotor arm, fuel pump, fuel filter, coil pack(s), relays, replace any items that are suspect IE Fuel filter which has probably not been changed since new even though they should be changed on all vehicles every 18 months, all of this can be done at home & will save you a lot of bucks in mechanic/garage fees,

are you sure it is not a fuel problem,check to make sure that your getting fuel,could be the solenoid on the fuel pump,does it smoke as your cranking it.

TIMMING CHAIN NEEDS TO B REPLACED AND MOTOR HAS TO BE RESET INTO TIMMING

There should be a fuse relay box under the hood with a fuel pump relay in it...have someone turn the key while you touch the relay to see if it is clicking when you turn the key..if not replace relay....if it does click, then it may be possible that the contacts on the relay are defective and the relay will need replacement anyway...there may also be a fuse for the fuel pump either in this box of under the dash...check to see that it is good also.

a crank position sensor could be bad or your cam position sensor could be bad

i had a similar problem and called the dealer during lunch hour. i talked to a mechanic, the distributor in these vehicles is plastic, and is prone to cracking.not just the cap but the body also, I have been taking the cap off and wiping the moisture out of the cap. or replacing the cap but the problem is I need a new distributor. just a cheep way to get rolling is cleaning the inside of the cap, especially when it is very damp or the outside temp changes alot during the day. good luck.

Have you checked the fuel filter? Have you changed it EVER?

There is a priming pump on top of fuel filter assembly. Had to have somebody else pump it while turning the motor over, It fired right up. Was looking for a while for this pump, because it doesnt look like a pump, it is metal on top of fuel filter.