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I: i have a 2000 gmc yukon denali that has been tricky to

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i Dave: i have a...
i Dave: i have a 2000 gmc yukon denali that has been tricky to start for several months two service centers cant find anything wring with it . After starting it misses for a short while then when hot it runs great. now today after cold weather 60deg it will not start after repeated tries. I even shot starter fluid in air intake but no luck any ideas to fix this thing? battery is good. Carl
Submitted: 2 years ago.Category: GM
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Answered in 22 minutes by:
10/3/2015
GM Mechanic: Gary, GMC Technician replied 2 years ago
Gary
Gary, GMC Technician
Category: GM
Satisfied Customers: 17,497
Experience: 15 years gm master tech/15 years ASE master tech
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if you spray some starting fluid right down the throttle body butter fly it still will not even run a bit on the spray ?

does it have spark at the spark plug wires when cranking it over ?

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Customer reply replied 2 years ago
Havent sprayed down the throttle body to avoid pulling alot of stuff off =. willdo and let you know. will also check spark. more after i do these things. Carl
GM Mechanic: Gary, GMC Technician replied 2 years ago

ok sounds good

this engine need spark and fuel and compression to run we have to see which one is missing

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Customer reply replied 2 years ago
did both things spray in carb and check good spark - still wont fire carl
GM Mechanic: Gary, GMC Technician replied 2 years ago

can you pull a few plugs and see if they are gas soaked or very wet ?

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Customer reply replied 2 years ago
but it is raining now will have to wait till rain stops probably tomorrow. how do i contact you then?
GM Mechanic: Gary, GMC Technician replied 2 years ago

i would pull a few plugs if they are wet or soaked replace the plugs and see if it will run if it does then the plugs where bad if this starts to act up again you have to be sure the TPS and the ECT sensors are reading correctly with a scan tool and most common check the fuel pressure regulator as these are very common for being bad allowing fuel to leak through them into the vacuum hose that connects to the regulator and allows fuel to get into the intake and can flood out the engine or cause hard starting

you can always get me back through this post for FREE anytime with any follow up anytime with this question even after you rate us here at Justanswer !

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Customer reply replied 2 years ago
will do carl
GM Mechanic: Gary, GMC Technician replied 2 years ago

sounds great

dont forget to rate us here at Justanswer !

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GM Mechanic: Gary, GMC Technician replied 2 years ago

how are you making out ?

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GM Mechanic: Gary, GMC Technician replied 2 years ago

how are you making out ?

dont forget to rate us here at Justanswer !

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Gary
Gary
Gary, GMC Technician
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