Engine diagram Truck won't start without putting a little starter fluid on carb. Change spark plugs, distrib cap, & rotor. Still same problem. Took off fuel lines and gas is flowing well. Any ideas on this?

SOURCE: adjust timing on 1998 GMC K2500 pick up 5.7 liter

It has to be done with a scanner. You can adjust this distributor, but there are no timing marks to watch as you move it. There is a timing mark on the balancer and on the timing cover for referencing Top Dead Center #1 cylinder only, but it is only used for dropping the distributor in to get the engine up and running. A scanner is needed to properly adjust the timing. Connect the scanner and look for a data parameter labeled ‘cam offset’ or possibly ‘cam ******.’ It will be listed in degrees. Start the engine, and bring it up to 1500 rpm. Note the reading. If the timing specification is not within plus or minus two degrees of zero, you need to move the distributor. You can move the distributor with the engine running but the timing will not change. After you move the distributor, the ignition has to be cycled off to let the computer learn the new timing spec. Restart the engine, bring it up to 1500 rpm and see what the new spec is. You must repeat this procedure until you get the timing into the specification as mentioned above. Once you have it set to spec, the code should clear.

SOURCE: 1999 Yukon cold start problems.

1999 Yukon Start Issue - I have replaced the octopuse, battery, fuel filter, fuel pump, still having problems starting in cold weather, sometimes after a heavy rain.

Any suggestions?

Thanks

SOURCE: 93 gmc sierra 5.7 liter engine, injection carb,

you say you replaced the fuse, but does the fuse have power? the gray wire at pump should have power when cranking, or for 2 seconds when turning key on. At fuel pump relay, put power onto gray wire, the pump should run if the wiring is good. if it doenst run then ck for power at fuse while power is on gray wire.

SOURCE: im getting spark for the plugs and im getting

A 1999 GMC Yukon has a fuel-injected engine. They are known for the fuel injector lines inside the intake plenum to break and flood the engine. If you are pouring starter fluid and gas in the intake you are only making it worse. replace the injector assembly with the "new improved" injector assembly and replace the plugs, then it will probably start.

This subject is covered by GM Technical Service Bulletin No.: 00-06-04-003B

See GM Parts List below. This replacement Injector assembly is now also available in the aftermarket.

SOURCE: i have 1998 sierra 1500 vortec 5.0 liters,when

Camshaft To Crankshaft Position Correlation Fault is what p1345 means. if the problem isnt electrical I would imagine the timing chain could be stretched and the engine is out of time somehow