Hi, I have a 1998 gmc safari van that I did a new tune up,include new filter,new fuel pumb.When I start after it sits for a while it starts and it will go for half a mile then it choked and dies.When you start it again it wont start.What could be the problem?Any help will be appreciated.
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This van came with platinum spark plugs which should be good for 100,000 miles. I would replace the fuel filter at 50,000 miles. As long as you have no running or starting problems that's all I would do in the first 100,000 miles
Hi, first you are going to need to locate the fuel filter, it is on the driver side of the van, it is inside the frame visible when you get under the van. to remove the filter you will need to loosen up the two fittings at both ends of the filter. these can be tricky to break loose, personally i prefer to soak these fittings with penetrating fluid two hours before i start working on it. you will need to purchase a line wrench set, you can find these at tool stores or auto parts stores. make sure you use these wrenches because if you use standard wrenches you can round off the fittings. also make sure you have a drain pan to catch fuel that drains out of the filter. and as a precaution there will be spray due to the fuel pressure so watch out.
The basics is it takes 3 things to start a engine. 1) Spark 2) Fuel 3)Compression. One of these is missing or partially missing. You may have all new tune up stuff on it, but you have other things to be concerned with. Fuel Pressure is important and could be losing fuel pressure when sitting. It's not that cut and dry.
check the schrader valve (the one that looks like a tire valve) in the fuel line/rail at the engine, and see if you're getting gas there - simply push it in, and gas should flow out - careful, when the pump is running, there should be considerable (40psi) pressure there. Let me know what you find.
Since you replaced the distributor, are you sure it's properly timed? Hook up timing light and try to crank. It should show you where your timing mark is. It will also verify that you are getting spark.
You need to start a systematic check. Is it electrical, mechanical, fuel related? Need to do more checking and maybe we can get that puppy going.