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 do i have a bad engine or what can i do to fix it!

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earned inkome

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PostSubject: do i have a bad engine or what can i do to fix it!   Tue Jan 08, 2013 6:44 pm

i have a misfire in cylinder 4 and i changed spark plugs and wires and took coil pack from another coil and still cylinder 4. so i checked my compression and it is 100 and the others are 150. so i put a little oil in the cylinder and the psi went to 150. do i need a new engine or rebuilt?
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LAYINGNUTZ
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Tue Jan 08, 2013 10:33 pm

Sounds like your rings are shot.. What motor is it? 5.3? U can get those fairly cheap. Probly like 800 bucks for a whole used motor. Call LKQ...
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will ferrell
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 9:35 am

sounds like rings
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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 6:41 pm

i was tolded also that it can be an injector? yeah it is 5.3 and it only has 119,000 miles. the engine doesnt knock or nothing it runs okay, but only when it idles if idles rough then normal then rough again.https://i.servimg.com/u/f15/17/78/63/33/freaks11.jpg
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robby floyd
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 7:20 pm

Sounds more like a fuel issue then rings to me. If your rings was going you would have noticed it smoking by now most likely.
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LAYINGNUTZ
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 8:35 pm

Ive also seen it be a collapsed valve spring.. That would explain the low compression but oil in the cylinder makin the compression jump sounds like rings to me..
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TorkiT
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 8:41 pm

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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 9:22 pm

sorry for all the questions man. but i am lost with this thing. i just changed the injecters and still cylinder 4 is misfiring, but it does run and idel a lot better, i also heard that it could be my o2 sensors?
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1Bad90
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Wed Jan 09, 2013 9:50 pm

Is it throwing any codes?
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Thu Jan 10, 2013 8:08 am

they also act funny when the fuel pump is going bad. it'll have just enought pressure to keep it running but not as much as it needs. you may wanna check to see if you are getting accurate fuel pressure.
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Thu Jan 10, 2013 8:16 am

as far as the compression issue that sounds like rings
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Thu Jan 10, 2013 8:19 am

if it isnt rings it could also be a valve issue or a valve spring issue.
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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Sat Jan 19, 2013 2:45 am

the only code it throws is the misfire thats it in one cylinder, and it doesnt smoke no sound it just idles ruff then it idles smooth.
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Mon Jan 21, 2013 7:19 am

id have your fuel system pressure checked bro.
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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Mon Jan 21, 2013 11:43 pm

ill try that fuel system and i sure hope that works thanks man
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Tue Jan 22, 2013 8:20 am

i know those fuel pumps are notorious for going out in those trucks. hope ya get her fixed buddy.
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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Fri Jan 25, 2013 10:25 pm

yeah thats what i heard about them fuel pumps. thanks man and i hope i get it running good for the shows coming up
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drock123
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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Mon Jan 28, 2013 12:22 pm

me to bro........ good luck.
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earned inkome

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PostSubject: Re: do i have a bad engine or what can i do to fix it!   Mon Jan 28, 2013 11:10 pm

thanks homie i will need it
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