Grease Monkey Garage

[davidwyby]

was kinda wanting a 6.2 hatoe

 

[redneckhillbilly]

are the 6.2's failing because of thin oil? or is there more to it?

 

[FergusonTO35]

Should set up camp straight up Holley's wazoo and wouldn't leave until it either worked or they bought it back and have a definitive direction to work towards.

You may want to research consumer product warranty laws where you live. In most places, any new consumer product sold new comes with an implied "warrant of merchantability". Meaning, the product must function as it is supposed to, and if it doesn't then the maker and/or seller must replace it, repair it, or give you a full refund of the actual price paid. I would bet Holley would just write a check to make you go away. On the Cast Boolits forum, there was a guy who bought a new Rossi 92 rifle which would not shoot with any ammo, factory or reload. After two or three times returning it for service with no success, he used Florida's consumer protection law to force Rossi to buy it back from him.

 

[stretch5881]

In the 90's, we had 2 new intakes that were flawed. We took them to the Holley trailer at a NSRA streetrod show to get them replaced. The reps at the show would do nothing for us. I've had nothing to do with them since. I'm funny that way.

 

[redneckhillbilly]

this is a edelbrock intake with the supplied gasket for a terminator efi system, look at how little meat is on the intake gasket mating surface.

 

[redline4]

was kinda wanting a 6.2 hatoe

LS 6.2 is just fine.
The recall isnt on the first few yeae of the LT 6.2 either and those were fine as well.
None of this would keep me from gettingone if i wanted it. FYI, you'resupposedtorun premium fuel in them.

are the 6.2's failing because of thin oil? or is there more to it?

Poor machined surface on the crank, poor beaeing quality for a specific run of the engine builds and I've also heard casting debris that didn't flush out of the oil galleries.

 

[Shane¹]

@redline4 did you get a chance to try the new plugs yet?

 

[redline4]

@redline4 did you get a chance to try the new plugs yet?

I did. It didnt change anything, which I expected.
While I had the plugs out I did a compression test, which was fine.
My next plan is to pull the fuel rail and injectors from my plow truck and put those in. They are the same connector type, so I am lucky to have that available.

 

[redneckhillbilly]

can a fuel injector fail in a mechanical way it just bypasses and cant meter any fuel?

is there a way to possibly turn down fuel pressure and see if it leans out some.

it is strange to think a cold O2 could send a signal to the ECM commanding more fuel.

could an overpressure of the fuel system damage an injector.

Id say with good compression and vusual of rockers moving properly you are on the right track, hopefully she roars to life for ya.

 

[redline4]

Based off the plugs and header temps cylinders 1, 3, and 5 are not firing. One would never know it based off sound or vibration of the engine.
The Holley ECU uses only 1 oxygen sensor. If it is in the left pipe, it always goes full lean. In the right pipe it reads normally.
The fact that it went full lean all the time and never changed is what led me down the bad ecu rabbit hole.
It's not that because it will act normally on the right bank.
If it was a spark issue, it wouldn't be lean, it would be rich due to unburned fuel.
Thats why I am going to try injectors.
I can turn down fuel pressure. The ecu will simply compensate by lengthening the injector pulse width within it's capability.

 

[Shane¹]

I did. It didnt change anything, which I expected.
While I had the plugs out I did a compression test, which was fine.
My next plan is to pull the fuel rail and injectors from my plow truck and put those in. They are the same connector type, so I am lucky to have that available.

I know you have already been over it 1000 times and probably know more than any of us providing ideas but. Fuel pressure could still be a thing worth rechecking one more time? Was that motor originally flex fuel? I think they like 48psi fuel pressure instead of 58

 

[redneckhillbilly]

I can work on others peoples broken clapped out as stuff for weeks on end and have very little troubles, but the second I work on my own stuff it fights me tooth and nail, I actually dread working on my own crap now, dont get paid a penny for it and got to buy the parts.

 

[redneckhillbilly]

hopefully a known good set of injectors does the trick. I have no idea where to go frome there.

theres always this option if you have enough room up front. intake and carb

 

[FergusonTO35]

I can work on others peoples broken clapped out as stuff for weeks on end and have very little troubles, but the second I work on my own stuff it fights me tooth and nail, I actually dread working on my own crap now, dont get paid a penny for it and got to buy the parts.

This 100%. My garage, driveway, and barn are the Sargasso Sea of unfinished projects. It would actually be easier and less time consuming to get another part time job and pay full shop rate for somebody else to do it.

 

[Stump Shot]

Based off the plugs and header temps cylinders 1, 3, and 5 are not firing. One would never know it based off sound or vibration of the engine.
The Holley ECU uses only 1 oxygen sensor. If it is in the left pipe, it always goes full lean. In the right pipe it reads normally.
The fact that it went full lean all the time and never changed is what led me down the bad ecu rabbit hole.
It's not that because it will act normally on the right bank.
If it was a spark issue, it wouldn't be lean, it would be rich due to unburned fuel.
Thats why I am going to try injectors.
I can turn down fuel pressure. The ecu will simply compensate by lengthening the injector pulse width within it's capability.

Not sure if this story helps or not, but here goes anyways. When I rebuilt the Grizwald's little Jeep engine we replaced the injectors with new aftermarket ones during assembly. After initial fire up it was ran very little and basically stored it then for a few months or so until Spring. At which time it would not fire one iota. So, upon ruling the ignition out as the source of the problem, it was discovered that it had no fuel. I think it was with the help of a noid light(?) it could be seen that three of the fuel injectors were not opening at all and the fourth just barely at all. Replaced the injectors again with all new more gooder ones and the problem was solved and has not happened again as it has gotten stored every winter since.

 

[hacskaroly]

This 100%. My garage, driveway, and barn are the Sargasso Sea of unfinished projects. It would actually be easier and less time consuming to get another part time job and pay full shop rate for somebody else to do it.

Haha, yup, working on my wife's Mitusbishi's valve body, original wasn't working - originally bad stepper motor, replaced stepper motor and ran for a short bit then issue with codes, bought a new/used valve body from eBay - that one didn't work + different codes. Took both valve bodies apart (the stupid refurb valve body from e-bay was dirtier inside than mine), cleaned everything. Found three valves in the original were stuck (over heated). Honed out the holes, put the valves from the eBay one in the original valve body, got it all back together and am now having stepper motor issues and low fluid code. Going to pull it one more time and put the stepper motor from the eBay unit on the original unit and make sure the harness is fully seated. Not really that big of a deal, except having to drain the fluid each time. All this while other projects are piling up like the blown head gasket on my truck and a riding mower that will not start. Last week had a front wheel bearing on another truck go out. When it rains it pours...lol

 

[Mastermind]

When it rains it pours...lol

Yep. I'll be having hernia surgery soon....and my loader tractor is in a blue million pieces.

 

[hacskaroly]

Yep. I'll be having hernia surgery soon....and my loader tractor is in a blue million pieces.

Ouch, hopefully the surgery will get you back moving like you need to....in regards to the tractor....good luck!!

 

[silveradol9h]

LS 6.2 is just fine.
The recall isnt on the first few yeae of the LT 6.2 either and those were fine as well.
None of this would keep me from gettingone if i wanted it. FYI, you'resupposedtorun premium fuel in them.


Poor machined surface on the crank, poor beaeing quality for a specific run of the engine builds and I've also heard casting debris that didn't flush out of the oil galleries.

Had the 6.2 LS (reason for my name. I know, sounds lame when I say it out loud) in a 2010 half ton with a canned tune. That was a fun pickup but not much use to drag around the 16k toyhauler.

 

[redline4]

Had the 6.2 LS (reason for my name. I know, sounds lame when I say it out loud) in a 2010 half ton with a canned tune. That was a fun pickup but not much use to drag around the 16k toyhauler.

Zero use pulling that. I would'nt even think of pulling mine with the new 6.6 gas and those have a much broader torque curve. That's definite diesel territory. I was happy with mine (2013) going over the Bighorn Mountains on our recent Wyoming trip.
A friend of mine has a 6.2 that I put a cam in for him. Brian Tooley racing "Truck Norris" cam. It sounds really good but the tuning isnt quite right and he's not happy with the guy who did that.