Question about 1999 GMC Jimmy
First thing to do is to find out what it ain't gettin. This involves pulling a spark plug, so you will need a 3/8 inch drive ratchet, a 5/8inch spark plug socket and a long 3/8 inch drive extension. Turn the ignition on and try to start the engine. Now, turn the ignition key off and remove one spark plug from the engine. Look at the tip of the plug. It should be wet and smell like gasoline. If it's dry, that means you ae not getting fuel to the engine. Now we will check for spark. Take the spark plug and the spark plug wire and hook them together. Lay the spark plug down and have a helper turn the ingnition key and try to start the engine. Watch the spark plug, there should be a spark jumping across the electrodes at the tip. If you don't see a spark, then there is no voltage getting to the plugs. Put the spark plug back in the engine and replace the spark plug wire. Now you need to let me know which of these two items is missing, spark or gas. From there, we can determine where to look next. Sounds like a lot of work, I know. But there is no easy answer to the problem. It is a process of elimination until we find the source of the trouble. The only other approach is to replace parts until the engine finally starts. That's the easy, and expensive way out. Whichever way you want to go.
Posted on Jan 02, 2011
Hi and welcome to FixYa!
If that's the case then the fuel pump needs replacement. Once replaced you'll be good.
Hope this helps and thank you for using FixYa!
Posted on Jan 02, 2011
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Posted on Jan 02, 2017
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