I have a 99 Blazer and so far I have been able to get the help I have needed with a search. Thanks to all who have posted. There are a lot of knowledgeable folks on this site. This time I did the search, found a lot of good posts and tried all the suggestions with no luck. The truck starts and runs very well, except about every two weeks after being driven for only 6-8 miles then turned off for a couple of min. it will not start. It cranks just fine but will not start. After it sits for about 10 min. it will start again just fine. It does not throw a code. I have had it to a shop twice and so far they are stumped as well. They have done a complete fuel system diagnosis and everything is within spec. Have done a complete tune up, replaced fuel filter, air filter, cap, rotor and plugs. Cleaned the intake, Checked the wires, all ok. The battery, alternator and starter checks out ok. Does anyone have a clue as to what I should check next. I hate intermittent problems. Thanks for any help.

Greg

 

Was the fuel system diagnosis done when the engine was not starting? If not, then I would not accept the result. Keep a fuel pressure gauge with you and run the 96+ Fuel System Diagnosis when it acts up.