SunlitComet
OBS Jedi-Do Good
That is what I want to do once I can get a secure enviorment to work in.
Help - running rough, new plugs, wires, cap and rotor
- Thread starter gulleyman
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Oh yes 99Yuk. Could be a number of things. He mentioned earlier that his oil was a bit milky. So, it could even be just a gasket issue.
It's one of those "while I'm here" issues. -- While I have one head off might as well do both, etc,etc....
I had suggested that because of the mileage,150K+ I think, the time and trouble and cost to do just the heads you might as well just pull the engine,swap everything over and put in a new one.
New heads on a tired block is a bit like your grandma getting ****** implants.
I thought that '0' was odd because even with a cracked head there is going to be some reading. That piston is pushing a lot of air as it travels.
SunlitComet
OBS Jedi-Do Good
Milky oil was a non issue for gully.
He said his mech saw it on the crank sensor.
There is just residual oil past the shaft seal and moisture that accumulates in there but no flow that would indicate the whole system is like that.
Being as how the minimum pressure allowed is 100psi it sound to have more life in it although mine apparently have 170 in all but 2 which read 145-146.
I am going to verify that next month.
If it as simple as a quick valve fix or gasket it would be cheaper in the long run but only if you have the means to do it yourself. I to find the damage it may only take your own personal time and maybe a machine shop inspection.
As far as the zero reading it got to be and valve stuck open or a hole in the piston other possiblities would have given themselves away by now.
Now adding the condition of oily plugs on alot of his bores I am almost convinced it has got to be valve related which also causes the misfires he has.
For me I just have not verified the misfiring bores with data for his or mine yet.
Still on track to get the hardware software package for diags next month still.
Wish I had $1800 for a tech2 unit though.
He said his mech saw it on the crank sensor.
There is just residual oil past the shaft seal and moisture that accumulates in there but no flow that would indicate the whole system is like that.
Being as how the minimum pressure allowed is 100psi it sound to have more life in it although mine apparently have 170 in all but 2 which read 145-146.
I am going to verify that next month.
If it as simple as a quick valve fix or gasket it would be cheaper in the long run but only if you have the means to do it yourself. I to find the damage it may only take your own personal time and maybe a machine shop inspection.
As far as the zero reading it got to be and valve stuck open or a hole in the piston other possiblities would have given themselves away by now.
Now adding the condition of oily plugs on alot of his bores I am almost convinced it has got to be valve related which also causes the misfires he has.
For me I just have not verified the misfiring bores with data for his or mine yet.
Still on track to get the hardware software package for diags next month still.
Wish I had $1800 for a tech2 unit though.
SunlitComet
OBS Jedi-Do Good
Hey gully I should have the obd link interface maybe by the end of the week and the extra software a few days laters. When I get my first batch of data I will post it so you can check it out. Finally going to make some progress on this beast. A little bit anyways. When I get the pitman arm and underbody steamed I am going to start getting pictures of the bottom view for reference as well.
SunlitComet
OBS Jedi-Do Good
Also getting a Fluke 568 Infrared/contact thermometer with logging ability so I can probe every part or port anywhere. I plan on doing manifolds, block, exhuast pipes, converters and whatever else I can get infrared or contact readings from. This diagnosis is going to be fun.
SunlitComet
OBS Jedi-Do Good
I am also getting a snap-on bk5500 borescope but will borrow a compression and fuel pressure tester(not likely to use hem on regular basis).
Last edited:
SunlitComet
OBS Jedi-Do Good
Well I got just the OBDLink interface with basic software but not the advanced software yet. But with the basic stuff I did confirm that maf, O2, and mixture codes have been eliminated with the parts I have done so far. That just leaves just the misfire codes. Cylinder 5 definitely as well as some others perhaps but after I did plug swap to required plugs I have had a pretty dead cylinder all the time so I will test the wires and inspect the cap in a few days. By then I will have the advanced software with gm enhanced data including idividual cylinder history and much more. So far that is all that is showing with the basic stuff.
Also got my boroscope today so I am going start probing some holes and openings soon.
Also got my boroscope today so I am going start probing some holes and openings soon.
SunlitComet
OBS Jedi-Do Good
And to top it off my starter just took a dump. It has been straining for a while and finally blew out. will try it again when it is cold and then replace it.
Last edited:
Hey folks, sorry I been MIA, holidays are a little hectic around my place. The week before Christmas my other car broke down on me in the parking lot of a REALLY popular mall 
I borrowed a truck and trailer and towed it to a local mechanic on my way to a Christmas function.
On top of that I'm in the middle of a messy insurance claim, foundation repair and remodel at my house. I don't know how I'm gonna get all this stuff settled at the same time, sheesh. Guess I just have to pick my battles...
I don't posses the knowledge or the means to tear it down myself and send the parts out to the machine shop
The price I got to repair the heads VS rebuild the motor wasn't much different so I'm just going to have it rebuilt. I plan on getting a mild cam put in it and a BB Tune.
Thanks to all of you who have followed along and given your input, sunlitcomet I hope everything works out for you soon man; sucks to be without your truck for so long don't it?
Can anyone help recommend some parts for my upgrade? I have to make a shopping list so I can take the parts to my rebuilder. What all do I need to buy to do the cam and stuff on the top end?
I borrowed a truck and trailer and towed it to a local mechanic on my way to a Christmas function.On top of that I'm in the middle of a messy insurance claim, foundation repair and remodel at my house. I don't know how I'm gonna get all this stuff settled at the same time, sheesh. Guess I just have to pick my battles...
I don't posses the knowledge or the means to tear it down myself and send the parts out to the machine shop
The price I got to repair the heads VS rebuild the motor wasn't much different so I'm just going to have it rebuilt. I plan on getting a mild cam put in it and a BB Tune.
Thanks to all of you who have followed along and given your input, sunlitcomet I hope everything works out for you soon man; sucks to be without your truck for so long don't it?
Can anyone help recommend some parts for my upgrade? I have to make a shopping list so I can take the parts to my rebuilder. What all do I need to buy to do the cam and stuff on the top end?
