Lost a cylinder

Stroken7.3 · Sep 30, 2011

My buddy has an 06 that lost #8 cylinder, the truck has 56K miles. He had a slight miss for about a week which ended up being the injector. Now he's trying to decide what to do, buy a short block, long block or have his engine pulled down and have that cylinder sleeved and put in a new piston and rings? What would be the best and most economical for him to do? The truck has an EGR delete, Edge CTS and an AFE filter.

Mdub707 · Sep 30, 2011

Well I would try and figure out what caused it to "lose a cylinder" in the first place... what the heck happened? You know for a fact the cylinder is shot? Are the heads off, or did someone scope it? Compression test?

Stroken7.3 · Sep 30, 2011

The shop that tested it used a computer to do it, it showed a bar graph and from what he was told it was 33% lower than the other cylinders. The truck is running rough and will barely idle. Nothing out of the ordinary happened, the truck is very well taken care of and not flogged on at all, the truck just developed a slight miss at idle and he had the injector replaced within 3 or 4 days. The truck was driven less than 30 miles with a miss.

Gearhead · Sep 30, 2011

Um well just having a bad injector could cause that..... don't throw out the baby with the bath water just yet.

Stroken7.3 · Sep 30, 2011

What should he do next??

Gearhead · Oct 1, 2011

if the computer is telling them they need to replace the engine and they haven't investigated anything mechanically i'd take it somewhere else.....

Betarocker · Oct 2, 2011

Drive the same route to see if you can find it.

SouthFlstrokin' · Oct 2, 2011

now youve got me worried....

06f3506.0 · Oct 2, 2011

Stroken7.3 said:
What should he do next??

depends on what he wants to do with the truck does he wanna leave it stock or build it up

01PSD · Oct 2, 2011

Gearhead said:
if the computer is telling them they need to replace the engine and they haven't investigated anything mechanically i'd take it somewhere else.....

Best advice right there LOL

Stroken7.3 · Oct 3, 2011

It's going to a different shop now, I guess we'll see wat the verdict is. BTW the truck now starts like the batteries are dead, misses at idle and the exhaust will burn your eyes (unburnt fuel).

Gary · Oct 9, 2011

You need to do a compression test on that cylinder.

Mdub707 · Oct 10, 2011

Probably just a bad injector....

Amazing how a bad injector turns into "I need a new engine"... talk about wanting to throw parts/money at a truck, holy crap.

Diagnose, verify, repair!

Stroken7.3 · Oct 10, 2011

It ended up being a bent valve, the mechanic found a 6mm bolt in the intake runner :shrug:. The egr delete has been done for at least 2 years and since my buddy has owned this truck for the last year he has not had anything done to it. Well at least now the motor will be studded and resealed.

Mdub707 · Oct 10, 2011

That's random. Wow.

hawgdoctor · Oct 12, 2011

Sounds like someone forgot to REMOVE the bolt from th eintake that holds the back of the egr in place. Then when they ifted up the intake it jumped, and did a dissapearing act. Their neglagence for not finding, and instead just saying phuck it, and throwing it back together. What a shame.