87 GMC s15 crank but will not start

SOURCE: fuel pump

Fuel Pump on this Vehicle is on the inside of the gas tank it is a not so hard job to do if you have done quite a bit of mechanical work, but if not you best get someone who does have the experience since we are talking with dealing directly with the tank that even when empty it can explode with a spark from a tool striking ant metal.

But if You are that person that knows how to tinker with automobiles I Strongly suggest to go to your local auto parts store and get the book in order to follow the instructions safely, trust me I have done 2 chevy astros and a thunderbird. Good Luck.

ZJ Limited

• 17989 Answers
• Posted on Oct 05, 2009

SOURCE: firing order for a 1986 gmc s15

FIRING ORDERS

To avoid confusion, ALWAYS replace spark plug wires one at a time.

The most important thing to remember about the removal and installation of a distributor, cap or spark plug cable is that all wires MUST be labelled before they are disconnected. Keep in mind that these figures depict a firing order where the distributor cap terminals are relative to EACH OTHER only and they do not necessarily depict the tower positions in relation to the rest of the engine. This is true because any distributor which has been removed and reinstalled may have been installed with the No. 1 spark plug tower at any position (360 degrees) in relation to the rest of the motor, as long as the rotor aligned to the No. 1 tower when the No. 1 cylinder was at TDC of the compression stroke (valves closed, ready for the plug to fire). As long as the remaining wires were connected in the correct firing order sequence (depending on direction of distributor rotation) the engine will run. DO NOT EVER remove more than one wire from the distributor cap at a time unless you tag ALL wires and towers to assure proper installation.



Fig. 1: 1.9L engine . Firing order: 1-3-4-2 . Distributor rotation: counterclockwise



Fig. 2: 2.0L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise



Fig. 3: 2.5L engine . Firing order: 1-3-4-2 . Distributor rotation: clockwise



Fig. 4: 2.8L engine . Firing order: 1-2-3-4-5-6 . Distributor rotation: clockwise



Fig. 5: 4.3L engine. Firing order: 1-6-5-4-3-2 . Distributor rotation: clockwise

I hope help you with this (remember rated this help) Good luck.

SOURCE: 2006 gmc sierra 1500 stalled and will not start.

i have a 06 sierra that done the same thing and it was the distributer gear stripped

SOURCE: where is the fuel filter

I have 2 1989 GMC S-15 trucks (actually one of them i bought for my daughter). Anyway, the 2.5 four cylinder one has the fuel filter on the firewall between the brake master cylinder and the engine. The other one is a 4.3 six cylinder and the fuel filter is on the inside of the frame rail on the driver's side, kind of under the cab near the fuel tank. Hope this helps.

SOURCE: i have a 1989 gmc

make sure you have spark