1987 Chevy S10 Service Manual
The three lines hanging under the truck connect to a valve on top of the 4x4 transfer case, this is why the 4wd does not work. As for the throttle body lines there should be a diagram on the radiator support that explains that. You should have one large line that goes to the PCV valve, a small line going to the air cleaner, a small line connected to the MAP sensor and possibly another connected to a valve that controls the EGR valve.
Your fifth line should connect to a port on the manifold that supplies vacuum to a tank that is the vacuum source for the HVAC control doors and the front axle engagement system. The axle engagement system is what the line hanging by the transmission under the truck is for. Answered on Jun 03, 2017.
Take out the #1 spark plug and turn the engine by hand until you feel compression building when your thumb is over the spark plug hole. Now continue turning the engine slowly while watching for the timing mark on the dynamic balancer line up with the TDC mark on the timing indicator. Position the distributor so that the rotor is pointing to the #1 plug wire position on the rotor cap. When you mesh it with the cam gear, it will move past the #1 position. Take it back out and move the rotor to compensate for the distance it moves when the distributor is fully seated. Install the base clamp and bolt but don't tighten the bolt yet. Make the engine ready to run.
Hook up a timing light and start the engine and set the timing by rotating the distributor until the timing marks are correct, then tighten the clamp bolt. Answered on Oct 25, 2016.
Original GM Repair Manuals.written by General Motors specifically for the year and vehicle(s) listed. Official Shop Manuals that the dealers and shop technicians use to diagnose, service and repair Buick, Cadillac, Chevrolet, GMC Truck, Hummer, Oldsmobile, Pontiac and Saturn vehicles. Honda xr400r shop manual. A must for anyone who insists on Genuine OEM quality parts. A factory service manual generally covers General Information, Service Information, Suspension, Driveline, Brakes, Steering, Engine Mechanical, Cooling, Starting, Ignition, Emission Controls, Engine Controls, Transmission, Transaxle, Exhaust System, Fuel System, HVAC, Instrumentation & Warning Systems, Battery & Charging System, Audio Systems, Lighting, Electrical, Body Interior and Exterior and more.
1987 Chevy S10 Blazer Owners Manual
A Wiring Diagrams Manual generally covers Connector Repair Procedures, Wiring Harness Overview, Overall Wiring Diagrams, Fuse and Relay Information, Power Distribution, Fuse Details, Ground Distribution, Component Location Charts, Component Location Views, Vehicle Repair Location Charts, Component Testing and more.