My truck has been rough idling on and off for a bit...it has been throwing a cyclinder 6 misfire code constantly. (I've replaced wires, plugs, rotor and cap and still has these symptoms )

The 5.7L Auto is now starting up getting driven then after turning it off for a brief errand it won't start back up....it will start up then die. I've been able to getting it idling after a few extras tries and by giving it gas and revving the engine for a bit....

Now it won't start up after some revving and giving it gas at high rpms...
*It now takes a an hour or so then it will restart just fine....

Seems that after driving it for a while it then doesn't want to start back up and needs time to either cool off or reset or something....

Quite confusing here and not sure if it's fuel related or electrical.

Any ideas are greatly appreciated.

Thank you.

 

check the compression, could be a sticking injector how many miles on it?

 

There's about 150k on it now.
Haven't done anything with the injectors. Was going to pop off the manifold and clean them..... what do you think ?

thanx again !

 

dont waste your time with the old style i would upgrade the spider they sell them on amazon for about $215 drops right in

 

thanx i will look into it !

 

they get rid of the poppets and use a normal style injector Amazon.com: Delphi FJ10566 Fuel Injector: Automotive

 

Have you checked the resistamce on the coolant temp sensor the haynes manual has a chart in it

 

its the sensor mounted just under the thermistat housing it has two wires the single wire one in the cylinder head is for the gauge

 

I haven't checked that sensor.... no issues with the gauge reads though. Waiting for my new injector kit come in the mail.

I was driving it last night for a good 15 minutes then it just died on me again. Waited about 40 minutes and started up after a few several tries...

Thanx again for all the input !

 

my crank sensor failed in the middle of backing my trailer into my driveway thats the last autozone crank sensor i'll buy are you getting any codes even thou the light might not be on there might be one stored in there