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2008 starting hard when hot


craveman85

craveman85

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When it's hot out my truck starts hard. I crank the engine for about 10 seconds and it won't start. I try again and it starts. No cel, I've changed the fuel filter, plugs, wires, Coilpack, and cleaned the maf sensor. Been doing this for 3 months with no cel or any other problems. No mods on the truck. It's very clean with 86k. Any help would be greatly appreciated.
 


Surrey

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Does this happen all the time when its hot out? Even after its been driven for a while and restarted shortly after? Or only when it sits?

What happens if you only crank it for 3-5 seconds, then try again?

Need a bit more info here, but...

Next time, before you fire it up, cycle the key to on for 3 seconds, then off, then back on for 3 seconds, then off, THEN try to fire it up.
If it starts nicely after doing that you might be losing fuel pressure
 
craveman85

craveman85

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ford, AMC
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It does it whenever it's above 75 or so. If it's off for a few minutes it hesitates to start. If I cycle the key a few times it still hesitates for a second or two.
 
craveman85

craveman85

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ford, AMC
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2.3l, 2.5
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Manual
Any idea where I would be losing pressure. Its been doing it for months. Only when its hot. I still have to cycle the fuel pump 2-3 times. I have no cel on, no fuel dripping, no pressure loss while driving, and I'm getting 30mpg ever tank.
 

snake

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canyon lake tx
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2011
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Rent or buy a fuel pressure guage to be sure- but if you have low pressure it is either the fuel pressure regulator or the fuel pump.
 
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