• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

Hitting on 7 of 8 again...

WarWagon

WarWagon

Well it hits on 7 of 8...
Messages
10,891
Reaction score
9,018
Location
AZ
:mad2:
Just got the Burb up and running and my 1993 pickup acts up.
Started with a slight power loss and then a loud knock.
Starter spins it over with audible no compression on one hole.
I can feel hot air in the intake manifold on the #8.
No abnormal puffs out the oil fill.
Pulled the pass valve cover and everything looks good. - No buttons broke.

This is the 6.2 with 6.2 heads so I had to drop the manifold to get the injector pipe nuts loose...

I just ordered a injector set for this truck!
:mad2:
 
Pulled the intake manifold...

:suicide:

That's where the 1/4" worm gear clamp went! Apparently getting the IP out dropped the clamp in the #2 intake port from the IP return line. It was fine till the worm screw worked itself out and went into the cylinder like a week later. I got the clamp part out from the port. I know where the screw went - now if it is still there and knocking is a mystery with corpses all over the place.

:skep: It doesn't look good from what I can see through the intake valve. I have to pull the engine to get the head off and likely will need at least a piston. :eek:
 
Ouch!

I was afraid of something like that happening to my truck when it was sitting up for a few weeks. It spent 2 weeks in my shop, with a revolving door of people working around it, coming in and out and i was afraid there was something dropped and was hiding deep in my intake....just waiting til it started up.
 
I made it a habit of stuffing rags in the ports after i had something similair happen.
DON'T FORGET TO PULL ALL RAGS OUT BEFORE INSTALLING THE INTAKE.(I think Ratman will agree;))


I unknowingly lost a small washer one time.the engine knocked to beat hell for a bit but smoothed out later.
Years later i had the head off and found that washer stuck on edge deep in the piston,i filed it flush and let it sit.


You're not that lucky i'm afraid.
 
Lucky is the perspective of how much worse the problem could have been.

Got the engine out and heads off today. #2 had the clamp in the intake port, #4 had the screw slammed into the piston, #6 had impacted a intake valve enough to mark and indent the piston (From catching the screw in the seat). Just a hair away from snapping the valve off no doubt. Looks like the rods are ok.

Looks like some weirdness was going on on the passenger side as the intake valve was wiping the carbon off above the valve seat on one side and running a little hot. Possible bad valve guide.

So I will use the used 6.5 heads I have, couple pistons, and a ring set. ARP studs saved me head bolts again. Picked up the new rebuilt injectors today.
 
Look over that bore real good. The piston could have cocked in the bore and busted things.

Had a screw drop out of a Q-jet into an SBC one time. Busted it all to hell.
 
Foreign object in intake 1/4 fuel line worm clamp.
killer.jpg

screw.jpg

head.jpg

Valve strike on #6.
valve hit.jpg

Screw at TDC and removed.
screwed.jpg
screw removed.jpg
 
Got it torn down.
It was rebuilt before as the rods have numbers stamped on them and the caps.
Rings did not seat worth a damn. I can see a shine on the bottom half of the 2nd ring and the break in coating on the top half.
Rust in one or more of the bores should have been cleaned up before running. No cross hatch left in the upper cylinder on that bore. It will get a light hone to clean it up.
Crank looks nice.
1/4" crack on a outer bolt hole in the mains - I will see how long it will run and when it blows the crank out then I will get another 6.2... Will be happy if it makes over 30K miles. (As hard as I will run it.)
Going to run a set of unknown miles 6.5 crack free heads on it this time.
Timing chain was tight 30K ago now sloppy enough to replace with a Cloyes timing set.
I will pull the valve out and see a guide went bad.

Missy sold me a set of 6.2 slugs for it and now I am waiting on the gapless rings to be made and shipped to me. Factory didn't have them in stock and no one else does.
 
Chevy Cowboy bought the lock& stitch tooling. He might still have it and possibly rent if you are interested in repairing the crack. His block held even after snapping a crank in half.
 
You must log in or register to reply here.
Back
Top